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MerCruiser - Spare parts for MerCruiser sterndrives

Not many people know that the inventors of the first MerCruiser Alpha sterndrive and the first Volvo Penta Aquamatic were once close friends, who took separate paths for the eyes of a woman. The stars of this story are Carl Kiekhaefer and Jim Wynne. The latter took advantage of a situation, using the research and the innovative ideas of Carl, which were still unpatented, and managed to launch the first Volvo Penta Aquamatic in a very short period of time. 60 or 70 years later, this sounds like a novel, yet there is an essence of nostalgia for the 1960s. We owe it to Carl for the first universal joint - a part that we consider it an absolute necessity; by that time, it had to be invented.


Undoubtedly, nobody could beat the craftsmanship and the quality of the Swedish brand, but the pricetags were always on the higher range. MerCruiser managed to make boating affordable to more people, by offering a less refined version of outdrives. Their powerplants were the same when it comes to petrol engines: 4-cylinder, 6-cylinder, and 8-cylinder engines, all derived from Chevrolet. All of them had adaptations in order to use them in the marine environment, yet the parts branded as MerCruiser have always been cheaper. This, along with their simplicity to maintain them, is the main reason of their popularity. Last but not least, there are no “rare” MerCruiser parts, which shows a continuous availability, even for their older units. There are part numbers that haven’t changed in 5 decades, not because there was no room for improvement, but “if it works, don't touch it”! Such an example is the

Poseidon Marine® Trim Cylinder Ram seal kit MerCruiser 25-87400A2 87400A2. Yes, they could have easily replace the main o-ring with a proper hydraulic seal, yet it is already somewhat durable and cheap.


In this section, you will be able to find a wide range of spare parts for MerCruiser sterndrives, inboards, petrol, and diesel engines. Poseidon Marine keeps in stock a huge inventory for MerCruiser parts - we have anodes and kits, head gasket kits and individual gaskets, exhaust manifolds and elbows, raw water pumps, impellers, circulation pumps and more. We offer MerCruiser parts in Europe and the USA.


See other Popular Parts purchased for MerCruiser Engines:


  • PoseidonMarine® Trim Cylinder Rebuild kit MerCruiser 806191T 87400A2 1.89" O.D.
  • Recmar® One bolt trim fluid reservoir Volvo Penta & MerCruiser 18525A1 854531
  • Poseidon Marine® Water pump repair kit Mercruiser Alpha One Gen 2 Outdrive 43026Q06
  • Poseidon Marine® Upper unit seal kit Mercruiser Alpha One Gen 2 26-88397A1
  • Recmar® Cylinder head gasket for Mercruiser GM 3.0L 181 CID 3853336
  • Recmar® Carburetor repair kit Volvo Penta Holley 2-bbl 3854020 80312A-A1
  • Recmar® 17030 Cylinder Head Gasket for Mercruiser 5.7 V8 GM 104.50mm
  • Recmar® Carburetor repair kit Volvo Penta Holley 2-bbl 3854020 80312A-A1
  • Recmar® Carburetor Kit Mercruiser MerCarb 2-bbl 804844002
  • Recmar® Head gasket set for Volvo Penta 4.3 Vortec replaces 3858125 FEL 17211
  • Recmar® Cylinder head bolt short GM V6 V8 3856124 11968 1.750"
  • Recmar® Cylinder head bolt medium GM V6 V8 3856123 119671
  • Recmar® Cylinder head bolt long GM V6 V8 3856122 11966 3.750"


In addition to these consumables, Poseidon Marine stocks high-quality, Italian-made bellows kits for all MerCruiser sterndrive types.


  • CEF® Bellows kit MerCruiser Alpha pre '72 36223A2 18654A1 74639Q02 64818Q4
  • CEF® Bellows kit MerCruiser Alpha 1 Gen1 60932A4 18654A1 74639Q02 94996Q2
  • CEF® Bellows kit MerCruiser Alpha 1 Gen2 816431A1 18654A1 74639Q02 94996Q2
  • CEF® Bellows kit MerCruiser Bravo 86840A05 8M0062406 18654A1 74639Q02 16755Q1
  • CEF® Bellows kit MerCruiser Bravo Diesel 86840A05 8M0062406 78458A1 74639Q02


A bellows adhesive can be combined with any of the above bellows kits - we recommend the following:


  • Adeco® Universal synthetic contact bellows adhesive


Most importantly, our location puts us at a crossroads of big rivers, vast lakes, and many different seas - We ship fast parts for MerCruiser to the whole Mediterranean sea, as well as to all the countries in Europe, the Balkans, and the Baltics. Due to that fact, we keep in stock aluminum anodes for the salt water, magnesium anodes for the lakes and the rivers, and zinc anodes for the boats that are left stationary for a long time.


Besides such consumables, the increased demand for heavier parts for MerCruiser made it obligatory to expand our facilities, so that we can keep up with the customers' needs. As of 2020, we have regularly in stock the following elbows and manifolds for MerCruiser V6 and V8.


Dry Joint style:

  • Recmar® Exhaust Elbow MerCruiser GM Dry-joint 5.0 5.7 6.2L V8 V6 MPi 864309T02
  • Recmar® Exhaust manifold MerCruiser GM Dry-joint 4.3 V6 MPi 864612T01
  • Recmar® Exhaust manifold MerCruiser GM Dry-joint 5.0 5.7 V8 MPi 865049T01