Poseidon Marine – One of the Biggest Online Marine Parts Shops in USA, UK and Europe

What is our product range (inboard, outboard, stern). Further analysis of each category (Volvo Penta, Yanmar, Tohatsu etc) For each subcategory, top products and top problems, or which problem our product solves (use).

As previously mentioned in the introduction, our website is divided into branches according to the original placement of the part, e.g., spare parts for Volvo Penta, spare parts for Tohatsu outboards, and so on.

Shop For:

MerCruiser - Spare parts for MerCruiser sterndrives

MerCruiser – Spare parts for MerCruiser sterndrives

Spare parts for Mercury Outboards

Spare parts for Mercury Outboards

Exhaust system Yanmar - Exhaust Elbows & Turbo Gaskets

Exhaust system Yanmar (Spare Parts)

Spare parts for outboard engines

Spare parts for outboard engines

Suzuki Outboard Parts

Suzuki Outboard Parts

Tohatsu Outboard Parts

Tohatsu Outboard Parts

Shop For:

Exhaust system Volvo Penta (Spare Parts)

Exhaust system Volvo Penta (Spare Parts)

Cylinder liners, Piston rings, Engine bearings Overhaul kits

Cylinder liners, Piston rings, Engine bearings Overhaul kits

Volvo Penta

Volvo Penta

SLP ® SWEDISH LORRY PARTS

SLP ® SWEDISH LORRY PARTS

Yanmar - spare parts for Yanmar marine diesel

Yanmar – spare parts for Yanmar marine diesel

Johnson & Evinrude Outboard Parts

Johnson & Evinrude Outboard Parts

Popular Marine Parts:

Anode Riva Opera 4 8Kg Anode Riva Shaft 20 30Mm Anode Riva Shaft 35 50Mm
Anode Riva Shaft 40Mm Anode Riva Splendida 7 05Kg Anode Riva Thalassa
Anode Riva Zinc 3 Anode Riva Zinc 2 Anode Saildrive Bukh
Anode San Lorenzo Anode Sea Ray 200X110X30 Anode Sector Naval 10Kg
Anode Sector Naval 12Kg Anode Sector Naval 4Kg Anode Sector Naval 5 6Kg
Anode Sector Naval 5Kg Anode Sector Naval 7 8Kg Anode Serie Detra Dia 190
Anode Shaft Radice 40 Mm Alu 1 Cube Omc Cobra Collar 105 Mm
Anode Selva 6Hp Rod For Yanmar Dia 23 M8 Anode Sole 1 32 Mm
Anode Sole 2 37 Mm Anode Sole 3 47 Mm Anode Sole 4 55 Mm
Anode Square 64X64X10 Anode Stern Dia 100 H40 Anode Suzuki 75 85 90Hp Alu
Anode Tear Drop Weld On Alu 1 2Kg Anode 131 Waffle Bar For New Style Gimbal
Anode 45 Anode Trim Cylindrical Alu Anode Varifold Dia 67 H 70 M16
Anode Vetus Plate 0 9Kg Anode Vetus Plate 2 3Kg Anode Vetus Plate 2 7Kg
Anode Vetus Plate 4 5Kg Anode Vetus Plate Alu 0 9 Kg Anode Volvo Sidepower
Anode Volvo Aluminum 2 Anode Volvo Aluminum 875812 Anode Volvo Zinc 5
Anode Weld On Drop 0 6 Kg Anode Weld On Drop 0 860 Kg Anode Weld On Drop 1 Kg
Anode Weld On Drop 1 Kg 1 Anode Weld On Drop 1 8 Kg Anode Weld On Drop 2 Kg
Anode Weld On Drop 3 Kg 1 Anode Weld On Drop 3 Kg Anode Weld On Lingot 0 25Kg
Anode Weld On Lingot 0 26Kg Anode Weld On Lingot 0 5Kg Anode Weld On Lingot 1 1Kg 1
Anode Weld On Lingot 1 1Kg Anode Weld On Lingot 1 6Kg Anode Weld On Lingot 1 9Kg
Anode Weld On Lingot 2 4Kg Anode Weld On Lingot 3 5 Kg Anode Yamaha 115 300Hp Alu
Anode Yamaha 300 350 Hp 2 Anode Yamaha 300 350 Hp 1 Anode Yamaha 300 350 Hp
Anode Yamaha 75 250 Hp Alu Skeg Yanmar Sidepower Sleipner Propeller Nut 1
Sidepower Sleipner Propeller Nut 3 Sidepower Sleipner Propeller Nut 6 Sidepower Sleipner Propeller Nut 5
Sidepower Sleipner Propeller Nut 4 Skeg Formula 60 Hp Zinc Anode 92
Anode Zinc 4 Rod For Bmw Anode Cooling G M 2
Anode Cooling G M 1 Skeg For Honda Anode 51
Washer Dia 20 Anodo Long Skeg For Bmw Mark 2 Star Anode Serie Ips
Bar For Yamaha 60 90Hp Gori Collar Prop 15 16 5 Gori Collar Prop 18 20
Gori Collar Prop 28 30 Gori Propeller Nut Dia 6 Mm Gori Collar Prop 18 21
Gori Propeller Nut Prop 28 30 Bar Evinrude Johnson 60 175Hp Collar Johnson 737
Curved Block Evinrude Johnson 70 120Hp Cube For Evinrude Johnson Plate Johnson 2 150Hp
Washer Brp 3 5 5 6 Hp 4T Plate Brp 40 40 50 Hp 4T Skeg Brp 70 Hp 4T
Conic Brp

See More Popular Products by Poseidon Marine Parts:

SLP® Thermostat kit heat exchanger 95°C Volvo Penta D4 D6 3588437

SLP® Thermostat kit heat exchanger 95°C Volvo Penta D4 D6 3588437

SEAFLO® MACERATOR PUMP 19LPM 24V SFMTP207

SEAFLO® MACERATOR PUMP 19LPM 24V SFMTP207

SEAFLO® MACERATOR PUMP 19LPM 12V SFMTP107

SEAFLO® MACERATOR PUMP 19LPM 12V SFMTP107

Frigomar® Sea water magnetic drive pump FRISWM03230

Frigomar® Sea water magnetic drive pump FRISWM03230

SLP® thermostat gasket seal Volvo Penta D4 D6 1544710 20798938

SLP® thermostat gasket seal Volvo Penta D4 D6 1544710 20798938

SLP® thermostat gasket O-ring Volvo Penta D4 D6 945512

SLP® thermostat gasket O-ring Volvo Penta D4 D6 945512

Crom® Cylinder head bolt kit 2001 2002 2003 970888

Crom® Cylinder head bolt kit 2001 2002 2003 970888

Frigomar® Sea water magnetic drive pump FRISWM01230

Frigomar® Sea water magnetic drive pump FRISWM01230

Frigomar® SEA WATER PUMP B-NM40/16B/B (3 KW) FRI719

Frigomar® SEA WATER PUMP B-NM40/16B/B (3 KW) FRI719

Frigomar® SEA WATER PUMP B-NM40/12A/B (2,2 KW) FRI717

Frigomar® SEA WATER PUMP B-NM40/12A/B (2,2 KW) FRI717

Frigomar® SEA WATER PUMP B-C(M) 41E (1,1 KW) FRI715

Frigomar® SEA WATER PUMP B-C(M) 41E (1,1 KW) FRI715

Frigomar® SEA WATER PUMP B-C(M) 41/1E (0,75 KW) FRI714

Frigomar® SEA WATER PUMP B-C(M) 41/1E (0,75 KW) FRI714

Frigomar® SEA WATER PUMP B-C(M) 22A (0,55 KW) FRI713

Frigomar® SEA WATER PUMP B-C(M) 22A (0,55 KW) FRI713

MARCO® SELF-PRIMING PUMP A/C SYST.22L/MIN.,230V GS20126

MARCO® SELF-PRIMING PUMP A/C SYST.22L/MIN.,230V GS20126

MARCO® SELF-PRIMING PUMP A/C SYST. 33L/MIN.,24V GS20125

MARCO® SELF-PRIMING PUMP A/C SYST. 33L/MIN.,24V GS20125

MARCO® SELF-PRIMING PUMP A/C SYST. 33L/MIN,12V GS20124

MARCO® SELF-PRIMING PUMP A/C SYST. 33L/MIN,12V GS20124

MARCO® SELF-PRIMING PUMP A/C SYSTEM 26L/MIN,24V GS20123

MARCO® SELF-PRIMING PUMP A/C SYSTEM 26L/MIN,24V GS20123

SEAFLO® AIR CIRCULATION PUMP 500GPH 230V SFG500-01

SEAFLO® AIR CIRCULATION PUMP 500GPH 230V SFG500-01

SEAFLO® AIR CIRCULATION PUMP 250GPH 230V SFG250-01

SEAFLO® AIR CIRCULATION PUMP 250GPH 230V SFG250-01

Recmar® Shift Actuator eccentric piston plunger 3856008

Recmar® Shift Actuator eccentric piston plunger 3856008

Additionally, each such branch is further divided into more specific sections of the engine or the outdrive. Thus, you may browse at once all parts for the cooling system of Volvo Penta or all of our inventory with anodes. In detail, the structure of each branch has the following form:

  • Cooling system: Thermostats, C.W.P., seawater pumps, impellers, radiator components, radiator hoses, and repair kits for the pumps.
  • Trimming parts: Trimming caps with seals, complete cylinders, steering components, high-pressure hoses, and trim motors.
  • Gasket sets: Head gasket sets, oil pan gasket sets, custom sets, and individual gaskets.
  • Exhaust system: Exhaust elbows, exhaust manifolds, turbochargers, and accessories for them.
  • Fuel system: Carburetors, fuel pumps, injectors, and seals related to the fuel system.
  • Drive parts: Transmission seal kits, universal joints, rubber bellows, propeller shafts, and engine mounts.
  • Internal engine components: Pistons and rings, cylinder liners, engine bearings, crankshafts, engine valves, valve seats, and engine overhaul kits.
  • Filter media: Any filter related to the oil, the fuel, or the air is in this category.
  • Anodes: Zinc, aluminum, magnesium—you name it, Poseidon Marine offers it.
  • Electrical components: Alternators, starters, sensors, and various relays.
  • Ignition system: Coils, modules, spark cables, rotor caps, and complete distributors.
  • Maintenance kits: This is a category offering custom-made kits, which include basic or thorough maintenance parts, from filter media and impellers to belts, anodes, thermostats, and other common consumable parts.
  • Belts: Timing belts, alternator belts, or other drive belts are included in this section.

Yanmar’s stats prove that their engines are very sturdy and reliable, since their internal engine components are not so often replaced, compared to other engines. One must say that our most-sold engine parts for Yanmar are for the 6LP engine, a high-end powerplant with lots of torque, horsepower, and of course, higher needs.

  • Crom® valve stem seal for Yanmar 6LP 24-valve 119771-90210 119775-11340
  • Recmar® Exhaust Valve Yanmar 6LP 6LPA 119770-00490
  • Recmar® Intake Valve Yanmar 6LP 6LPA 119770-00480
  • Recmar® Exhaust Valve stem seal Yanmar 4LH 4LHA 6LY 119171-11150
  • Recmar® Intake Valve Yanmar  4LH 4LHA 6LY2 6LYA 6LYM 119173-11101
  • Recmar® Intake Valve stem seal Yanmar 4LH 4LHA 6LY 6LY2M 121850-11150

A significant proportion of the sales related to Yanmar marine diesel parts is tightly connected to the cooling system. This does not indicate a weak spot; in fact, the cooling water pumps have service intervals of 500-1000hours. Therefore, the higher volume of sales is absolutely normal. Here are our most-sold parts for “Cooling system Yanmar”:

  • Recmar® Seal kit Yanmar 3GM radiator 121450-13251 128297-44030 128695-44070
  • Recmar® Anode thermostat gasket Yanmar 1GM 1GM10 2GM 2GM20 3GM RO: 104211-49160
  • PoseidonMarine® Water pump repair kit Yanmar 3JH 4JH 129670-42513 129670-42560
  • PoseidonMarine® Water pump shaft kit for Yanmar 1GM 1GM10 pump 128170-42200
  • PoseidonMarine® Water pump repair kit Yanmar 1GM 1GM10 pump 128170-42200
  • PoseidonMarine® Impeller kit Yanmar 1GM 128170-42090 128176-42090
  • PoseidonMarine® Water pump repair kit Yanmar 6LP 119773-42600 pump 119773-42500
  • Impeller kit for Yanmar 2GM20F 3GM30F 3HM 3HMF 3HM35 3HM35UF 128296-42070 3GMF
  • PoseidonMarine® Water pump impeller Yanmar 3JH 4JH 129470-42532 129670-42530
  • PoseidonMarine® Water pump repair kit Yanmar 2GM 3GM 104211-42070 128270-42000
  • Water pump seal replaces Yanmar X02233010 YEU YM engines

In terms of absolute volume, only the elbow of the 4LHA/6LP series managed to rank. Again, it is a fact that we offer more than 15 stainless steel elbows for Yanmar marine diesel, so the sales are very diverse.

  • Recmar® Turbo to elbow gasket Yanmar 4LH 4JH 129472-13520
  • Recmar® Stainless steel Exhaust Elbow Yanmar 4LHA 6LP 119773-13501
  • Recmar® Turbo to manifold gasket for Yanmar 3JH 4JH 129472-18090

The last position belongs to various service parts and anodes for Yanmar:

 

  • PoseidonMarine® Fuel Filter kit Yanmar 1GM 2GM 3GM 104500-55710 24341-000440
  • Recmar® Oil Filter for Yanmar diesel engines 119305-35151 119305-35150
  • Recmar® alternator belt for Yanmar 6LP 6 LPA RO: 119775-77260
  • Crom® anode grommet for Yanmar 1GM 1GM10 2GM 2GM20 3GM 123210-09310
  • Tecnoseal® Anode Yanmar 1GM 1GM10 engine block Zinc 27210-200200
  • Engine anode kit for Yanmar 6LP 6LY replaces 119574-44150 119574-18790 119773-92600
  • Recmar® Anode Yanmar 1GM 1GM10 engine block Zinc 27210-200200
  • Recmar® Zinc Anode for MerCruiser QSD 8M0151541 Yanmar 120650-13420

As far as MerCruiser, there is certainly a lot of room for improvement. Yet, the optimization of our titles and descriptions

  • Recmar® Oil plug seal gearcase for Mercruiser, Mercury Mariner Honda 12-191833
  • Recmar® Rod Bearing 4.3L V6 Mercruiser Volvo Penta OMC 21179992 23-11992 STD
  • PoseidonMarine® Trim Cylinder Rebuild kit MerCruiser 806191T 87400A2 1.89″ O.D.
  • Recmar® Cylinder Head Bolt Volvo Penta & MerCruiser inline 4 10-34510 3857900
  • NGK ® Spark Plug BPR6EFS

It is a fact that PoseidonMarine is mostly known in the sphere of Volvo Penta, Yanmar, and MerCruiser. However, we also have a big audience in the Outboard world. Parts for Johnon & Evinrude held a dominant position in 2025, and these five achieved a “Top 5”:

  • PoseidonMarine® Tilt and trim seal kit Evinrude E-TEC 5008985 65-130HP
  • Recmar® Shaft oil seal Johnson Evinrude 327031 0300599 802292 30900T
  • Recmar® Shaft oil seal Johnson Evinrude 802278 0321480 0777541 321480
  • PoseidonMarine® Propeller shaft oil seal Johnson Evinrude 321453 69188 18-2051 18-2026
  • Champion ® Spark Plug CHAXC12PEPB XC12PEPB 773541 5001211

The market, though, is always interactive – more and more customers are coming to our page, and new products are gaining sales. A great example is the fuel additives. “STA-BIL® 22207 Storage Fuel Stabilizer 473ml Petrol” achieved a prominent position among them. Other miscellaneous components for engines like AIFO and Scania are being sold, proving that there is demand, but no offer of these products:

  • Tecnoseal® AIFO-FTP pencil anode Ø14 L.28 with brass plug 18X1,5
  • Tecnoseal® 02201 pencil anode zinc for Scania

On our strongest point, parts for Volvo Penta, our annual statistics of sales per absolute volume show some interesting data. Among 120 products with high-volume sales, 30% is attributed to drive parts, 18% are internal engine components, 17% are cooling system parts, 16% are trim components, and the remaining proportion is mostly concentrated on the exhaust system. Undoubtedly, the transmission of a sterdrive is the most exposed part to the harsh conditions, and the second one is the engine, with countless working hours, especially if it is a marine diesel engine.

Here is the list of the most popular drive components that stood out this year:

  • Flywheel Repair kit for Volvo Penta RO : 184841 958860 AD31 KAD 42 KAD44 DP-D DP-E
  • Recmar® Rubber seal box tube for Volvo Penta SX DP 3854595
  • PoseidonMarine® Inner Propeller seal Volvo Penta DP 851407 18-0558
  • Recmar® Seal for Volvo Penta saildrive propeller shaft 3593663
  • Recmar® Shift actuator seal Volvo Penta SP DP SX-C SX-M 853868
  • Inner propeller seal set for Volvo Penta Duo prop 853871 853807 853808
  • Recmar® U-Joint seal Volvo Penta AQ290 SP DP 839253
  • Recmar® O-ring bearing housing for Volvo Penta 925258
  • PoseidonMarine® Saildrive sealing kit Volvo Penta MS25 120S 130S 150S 3593663
  • Flywheel Repair kit for Volvo Penta RO: 11013 181105 958860 D30/31 D40/41 V6 V8 with SP DP 22075
  • Recmar® O-ring Intermediate Housing for Volvo Penta 925259
  • Poseidon Marine® Hydraulic Manifold Block for Volvo Penta SX replaces 3852559
  • PoseidonMarine® Steering actuator assist seal kit for Volvo Penta 852741
  • Recmar® upper gear housing o-ring seal 832669 Volvo Penta AQ270 AQ280 AQ290
  • Recmar® Bellows kit for Volvo Penta sail drive replaces 21389074
  • Recmar® Gear Segment Ratchet Volvo Penta 853758 854063 872812
  • Recmar® Inner propeller seal set Volvo Penta Duo prop 853871 853807 853808
  • Recmar® O-ring bearing housing for Volvo Penta DP-S 3854625
  • Recmar® O-ring gearcase to upper gear housing Volvo Penta 3852866
  • Recmar® O-ring gearcase to upper gear housing Volvo Penta SX-C DP-SM 3852950
  • Recmar® oil plug gasket for Volvo Penta 897682
  • Recmar® Steering arm Lower bushing Volvo Penta 854704
  • Rubber Ring for Clamp Ring (green) for Volvo Penta replaces 804190
  • PoseidonMarine® Bushing for steering helm replaces 853048 Stainless Steel
  • PoseidonMarine® Steering arm fork seal Volvo Penta 839195 872290 spline shaft
  • Recmar® O-ring for Volvo Penta 946438
  • Recmar® Propeller shaft oil Volvo Penta single propeller 897426
  • Recmar® U-Joint Seal kit Volvo Penta 839253 AQ290 SP-A SP-C DP-A DP-C DP-D DP-E
  • GKN® U-joint Volvo Penta SP-A SP-C DP-A DP-C DP-D DP-E 3860232 854619
  • PoseidonMarine® Upper unit seal kit Volvo Penta SX-C SX-M DP-SM 3850594 3852272
  • Recmar® grommet seal for Volvo Penta SX DP 3852315
  • Recmar® plastic bushing kit for Volvo Penta hook up fork 872096 876507
  • Recmar® Steering knuckle rubber sealing ring 872755
  • Recmar® upper gear housing o-ring seal 3852317 Volvo Penta SX-C DP-S DP-SM
  • Recmar® bearing housing o-ring for Volvo Penta 3854624
  • Recmar® O-ring bearing housing for Volvo Penta 955981

The second place includes many parts of the SLP brand – an expected fact, since the internal engine components, like pistons and cylinder liners, are their specialty:

  • SLP® Head bolt for Volvo Penta D30 D40 D31 D41 D300 838775
  • Recmar® Valve Stem Seal Volvo Penta MD1 MD2 MD3 MD40 AQ165 AQ170 1306630
  • Recmar® Piston ring kit Volvo Penta MD1 MD2 MD3 MD11-17 875498 875499 STD & O/S
  • Recmar® Cylinder head bolt short GM V6 V8 3856124 11968 1.750″
  • SLP® Injector sleeve kit for Volvo Penta MD1 MD2 MD3 MD11 MD17 897170
  • Recmar® Valve stem seal Volvo Penta KAD44 KAD300 D4 D6 861700
  • Crom® Cylinder liner seal kit Volvo Penta MD11C MD11D MD17C MD17D 875550
  • Recmar® Cylinder head bolt medium GM V6 V8 3856123 119671
  • Recmar® Valve Stem Seal Volvo Penta 3.0GL 3854956 GM 34217
  • PoseidonMarine® Intake valve Volvo Penta MD1B MD2B MD3B MD11 MD17 833188
  • SLP® Injector sleeve kit Volvo Penta D4 D6 889970 3583716
  • Recmar® Main bearing kit Volvo Penta D4 D6 3586871 standard size
  • Recmar® Rod big-end bearing kit Volvo Penta D4 D6 3586883 standard size
  • Recmar® Valve Spring Volvo Penta 30 31 32 40 41 42 43 1545198
  • SLP® valve seat exhaust D4 D6 3581862
  • PoseidonMarine® Piston ring kit Volvo Penta D30 D31 D40 D41 275350
  • Cylinder liner kit for Volvo Penta marine diesel MD11 MD17 RO: 875549
  • Recmar® Cylinder head bolt long GM V6 V8 3856122 11966 3.750″
  • Recmar® Rocker Arm Nut for Volvo Penta 3853004 and MerCruiser 34516
  • Recmar® Piston Ring Set 4.3 5.7L std. (1996+) 21179959 801861
  • PoseidonMarine® Exhaust valve Volvo Penta MD1B MD2B MD3B MD11 MD17 829620
  • PoseidonMarine® Rod bearing Volvo Penta MD1B MD2B MD3B MD11 MD17 803353 875491 875492

The third place of this classification is shared between the water pump parts and the trimming system components. Both categories represent a large proportion of the branded PoseidonMarine® parts, with zero compromise on the quality. 

  • Poseidon Marine® Hydraulic Manifold Block for Volvo Penta SX replaces 3852559
  • PoseidonMarine® Steering actuator assist seal kit for Volvo Penta 852741
  • PoseidonMarine® Trim ram seal kit Volvo Penta SX-A DPS-A DPS-B 3889954 3889955 3889956
  • PoseidonMarine® Trim Cylinder Ram for Volvo Penta DPH DPR 3888301 21840806
  • Recmar® trim circlip e-Ring for Volvo Penta SX-M 0778293 3857521
  • Recmar® Trim grommet for Volvo Penta SX-M SX Cobra 3853424
  • PoseidonMarine® Trim ram seal kit Volvo Penta trim cylinder 3860881 872612
  • PoseidonMarine® Trim Cylinder tool wrench nut removal Volvo Penta 872612 3860881 19876
  • Recmar® o-ring for trim hose to cylinder Volvo Penta SX 3852165 SIE18-7141
  • PoseidonMarine® Trim Cylinder Rebuild kit Volvo Penta cylinder 3860881 metric
  • PoseidonMarine® Trim Cylinder Rebuild kit Volvo Penta DPH DPR 21840806 21840807
  • PoseidonMarine® Trim Cylinder Ram for Volvo Penta trim cylinder 3860881
  • PoseidonMarine® Trim ram rebuild kit Volvo Penta SX DP-SM OMC Cobra 3854247 3885196 3857470
  • PoseidonMarine® Trim Ram Rebuild kit Volvo Penta cylinder 872612 inch thread
  • PoseidonMarine® Trim ram seal kit Volvo Penta trim cylinder 853439 square capped
  • PoseidonMarine® Trim drive Gear Volvo Penta 852984 852984-4
  • Recmar® Trim Cylinder end Cover Cap Volvo Penta SX-M 0778214 3857522
  • PoseidonMarine® Steering ram rebuild kit Volvo Penta DPH DPR 21745119 22452005
  • PoseidonMarine® Trim ram Seal kit Volvo Penta SX DP-SM OMC Cobra 3854247 3852414 3885196
  • Recmar® O-ring for trim gear segment Volvo Penta 925050
  • Recmar® Power Trim Bushing Volvo Penta SX-M OMC 0778256 0915050 3853423
  • Water hose connector for Volvo Penta DP-E DP-G DP-X replaces 872752
  • Recmar® water pipe connection gasket Volvo Penta MD22 TMD22 D2-55 859835
  • PoseidonMarine® Water pump repair kit Volvo Penta 2001 2002 2003 MD7 875756 3586496
  • PoseidonMarine® Water pump shaft kit for Volvo Penta D2-55 D2-75 3583089
  • PoseidonMarine® Water pump shaft kit Volvo Penta AQ165 AQ170 MD21 875383 875575
  • Recmar® Water hose for Volvo Penta DP 876632 875847 854555
  • PoseidonMarine® Water pump kit Volvo Penta MD2010 MD2020 MD2030 MD2040 D1-13 D1-20 3593659
  • Sea Water Pump Shaft Repair Volvo Penta MD2030 MD2040 D1-30 D2-40 Pump 3593655
  • Recmar® Water hose connector Volvo Penta 854031 851766 897600 18-2777
  • Recmar® seawater filter o-ring seal for Volvo Penta 858986
  • Recmar® Sealing ring water pipe Volvo Penta Ø 17mm 829714
  • Drain tap cooling water for Volvo Penta 1/8 inch
  • Impeller kit for Volvo Penta 18-3077 3841697 21951356 127610-42200 09-1028B
  • PoseidonMarine® Circulation pump repair kit Volvo Penta AQ165 AQ170 831742 831720
  • PoseidonMarine® Sea Water Pump Repair kit Volvo Penta D2-55 D2-75 3583089 21951346
  • Water pump repair kit for Volvo Penta 860629 3583115 similar to 877373 3841697
  • Recmar® Cooling water pipe seal Volvo Penta 842913
  • PoseidonMarine® Heat exchanger seal kit Volvo Penta D4 D6 replaces 3583647
  • Sealing ring for water pipe Volvo Penta 20mm replaces 418411
  • Water pump repair kit for Volvo Penta 2003T pump 858150 858408
  • Water pump cross piece for Volvo Penta AQ115 125 130 131 140 170 831009 806256

There is also a noticeable amount of fuel pumps, all of which are manufactured in Europe, with the highest standards.

  • Poseidon Marine® Fuel pump Volvo Penta MD1 MD2 MD3 MD7 MD11 MD17 2001 2002 2003 833323
  • Poseidon Marine® Fuel pump Volvo Penta 831092 AQ115 AQ130 AQ165 AQ170
  • Poseidon Marine® Fuel pump Volvo Penta AD31 AD40 AD41 TAMD41 KAD42 3582310 860320
  • Poseidon Marine® Fuel pump Volvo Penta MD19 MD21 MD29 MD32 858459 826550

Followed by miscellaneous gaskets and exhaust components:

  • Recmar® Oil cooler seal kit Volvo Penta 30 31 40 41 42 inc 469483 859086
  • Recmar® Exhaust Elbow Connector for Volvo Penta replaces 859836
  • Crom® Vacuum valve seal kit anti-siphon bend for Volvo Penta 3818424 875738
  • Recmar® exhaust manifold gasket Volvo Penta MD1 MD2 MD3 MD11 MD17 859145
  • Crom® Head Gasket Set for Volvo Penta MD1B MD2B MD3B 876377 89mm Piston 859151
  • Crom® Exhaust manifold gasket Volvo Penta AD31 KAD32 AD41 KAD44 838673 876144
  • Recmar® Exhaust Elbow for Volvo Penta D2-55 replaces 21424345
  • Recmar® Exhaust Elbow Volvo Penta 861906 21190094 MD2020 MD2030 MD2040
  • Recmar® De-carbonizing Kit Volvo Penta diesel MD11C MD11D 876376

The last place of our classation ranks filters and anodes:

  • Racor® 500-series fuel fiter element Volvo Penta diesel 3581760 30 micron red
  • Recmar® Alternator belt for Volvo Penta D30 D31 D40 D41 RO: 966978 1100mm
  • Recmar® Air Filter Volvo Penta 2020-2040 D2-55E D2-75C 3580509
  • Recmar® Service kit Volvo Penta D6 3582732 3583443 21702999 3584145 3593573
  • Recmar® Zinc anode Volvo Penta 3838499 800476 804107 838929 858501 18-6001
  • Recmar® Anode Plug Volvo Penta 3838500 838928 858754 861546 18-6021

Besides the parts that correspond to a specific original equipment part number, we have developed some special kits in order to cover that missing gap in the market and offer a repair solution where the original manufacturer does not. Such examples are the water pump repair kits, developed for Volvo Penta:

  • PoseidonMarine® Circulation pump repair kit Volvo Penta AQ165 AQ170 831742 831720
  • Sea Water Pump Shaft Repair Volvo Penta MD2030 MD2040 D1-30 D2-40 Pump 3593655
  • PoseidonMarine® Water pump shaft kit for Volvo Penta D2-55 D2-75 3583089
  • PoseidonMarine® Sea Water Pump Repair kit Volvo Penta diesel 3583115 10-24524

All of them are offering the most essential parts to perform a successful repair on your current pump, saving you a lot of money, and investing in good quality by using renowned brands of bearings. These kits were developed with your voice when some of you asked if we have to offer a repair solution, so thank you people for the inspiration! In the same spirit, we launched brand-new trimming cylinder rams for many popular drives. Among these, we pick out the following:

  • PoseidonMarine® Trim Cylinder Ram for Volvo Penta DPH DPR 3888301 21840806
  • PoseidonMarine® Trim Cylinder Ram for Volvo Penta trim cylinder 872612
  • PoseidonMarine® Trim Cylinder Ram for Volvo Penta trim cylinder 3860881

The cobblestone of these products is “zero compromise on quality and workmanship.” Following the success of the Volvo Penta water pump shaft kits we introduced in the winter of 2024, we introduced a couple of kits for Yanmar marine diesel. More specifically, the following 4 shaft kits were added:

  • PoseidonMarine® Water pump shaft kit Yanmar 1GM 1GM10 pump 128170-42200
  • PoseidonMarine® Water pump shaft kit Yanmar 2GM 3GM for pump 128270-42000
  • PoseidonMarine® Yanmar 3JH 4JH water pump shaft kit 129670-42513
  • PoseidonMarine® Yanmar 6LP water pump shaft kit 119773-42500 10-24493-01

Moving further ahead, we plan on expanding our range of shaft kits in order to serve more Yanmar models and other brands, like Vetus and Beta.

Frequently Asked Questions

  • What should I do if I notice water in the lower unit of an outboard or sterndrive?

    If you notice water in the lower unit, stop using the boat immediately and drain the contaminated oil as soon as possible. The next step is to identify the source of the leak. The most common causes are the oil plug drain seals and, most frequently, the propeller shaft seals. Approximately 90% of water intrusion cases originate from worn or damaged propeller seals.

    Poseidon Marine stocks a wide range of high-quality marine-grade propeller shaft seals including: 851407, 853807, 853808 for Volvo Penta Duo-Prop drives, 3593663 for various Saildrive units, and 321480, 321481, 327031 for Johnson & Evinrude outboards.

  • What happens to the fuel during winterization?

    The most effective winterization method is to **fill the fuel tank completely**, reducing internal condensation. A fuel stabilizer should then be added to prevent gum and varnish buildup caused by separation or oxidation of lighter hydrocarbons.

    Recommended products offered by Poseidon Marine include:
    • **STA-BIL® 22207** – Storage Fuel Stabilizer (473 ml) for petrol engines
    • **STA-BIL® 22254** – Storage Fuel Stabilizer (946 ml) for diesel engines

  • What are the benefits of a stainless steel elbow for Yanmar marine diesel engines?

    Stainless steel exhaust elbows (316L grade) offer significantly longer service life than cast iron equivalents. They resist corrosion, prevent carbon buildup inside the exhaust passage, and help maintain optimal engine performance. Cast iron elbows often accumulate soot, resulting in restricted water flow, overheating, corrosion of the heat exchanger, and potential turbocharger damage.

    A top-selling model is the **Recmar® Stainless Steel Exhaust Elbow Yanmar 4LHA / 6LP – 119773-13501**.

  • What warranty is offered on SLP cylinder liners and other parts from the Swedish brand?

    All SLP spare parts include a **36-month or 6,000-hour warranty** (whichever comes first), covering manufacturing and material defects, provided the parts are used normally and service intervals are respected.

    Popular components include injector sleeve kits **897170** and **889970**, and high-demand valve seats for the Volvo Penta D4/D6 engines (**3581862**).

  • What happens if a mechanical fuel pump fails on a Volvo Penta or other marine engine?

    A failing mechanical fuel pump may cause inconsistent engine performance, difficulty starting, unusual noises, or fuel leaks if the membrane is damaged. Poseidon Marine stocks a comprehensive range of mechanical pumps for both diesel and petrol engines.

    All Poseidon Marine-branded pumps, such as the **Fuel Pump for Volvo Penta MD1 / MD2 / MD3 / MD7 / MD11 / MD17 / 2001 / 2002 / 2003 – 833323**, are manufactured within the European Union.

  • How do I fix a leaking trimming cylinder or hydraulic cylinder on a marine engine?

    The repair method depends on the specific model. Most trimming and hydraulic cylinders can be serviced by disassembling them and replacing all seals. However, if the ram shaft is deeply scratched or corroded, replacing seals alone will not resolve the leak.

    Poseidon Marine manufactures several replacement rams: **21840806, 21840807, 3860881, 872612**, along with many trim cap kits including: **86191T, 87400A2, 853439, 872612, 3860881, 3854247, 3857470, 3857471, 3885196**.

  • How do I clean a clogged heat exchanger?

    The descaling process varies by engine design, but for a typical freshwater-cooled unit (e.g., Yanmar 3GM), the procedure is:

    1. Remove the end cap(s) and extract the core.
    2. Soak the core in an appropriate descaling solution; rinse thoroughly per product instructions.
    3. Perform additional maintenance such as housing cleaning or repainting.
    4. Reassemble using new seals and gaskets.

    Helpful kits include the **Recmar® Seal Kit for Yanmar 3GM radiator – 121450-13251 / 128297-44030 / 128695-44070**. Poseidon Marine also offers heat exchanger seal kits for Volvo Penta and Yanmar engines.