Rareelectrical Oem Grade Lower Conversion Gasket Set Compatible With Mercruiser Omc Gen Iv 7.4L 8.2L 454 502 Cid 2-Piece Rms Replaces 27-806868A2 18-4375

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Management number 212907421 Release Date 2026/04/12 List Price $80.95 Model Number 212907421
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MERCRUISER 7.4L / 8.2L GEN IV (2-PC RMS): MerCruiser 7.4L Mag Gen IV 330HP GM 454 CID (2-piece RMS, to 1991) MerCruiser 454 Mag Bravo One 330HP Gen IV (2-piece RMS) MerCruiser 8.2L Mag 370HP GM Gen IV 502 CID (2-piece RMS) OMC / VOLVO PENTA 7.4L / 8.2L GEN IV: OMC Sterndrive 7.4L-8.2L 270-300HP Gen IV (2-piece RMS) Volvo Penta 7.4GL / 8.2GL Gen IV 310-340HP (2-piece RMS) OEM PART NUMBERS: MerCruiser: 27-806868A2 / 2780686802 Volvo Penta: 3853380 Sierra: 18-4375 / 184375 GLM: 39540 Fel-Pro: 17140 Lower Conversion Gasket Set — Gen IV 7.4L/8.2L 454/502 CID (2-Piece RMS): Complete lower engine gasket set for Gen IV GM 454/502 CID big block marine engines with 2-piece rear main seal. Fits MerCruiser, OMC, and Volvo Penta Gen IV applications. ⚠️ IMPORTANT: Verify OEM part number before ordering. For Gen V with 1-piece RMS use 502-145.

  • Products are all 100% NEW and Made with the Highest Quality Components Available with a Full One Year Warranty. Please verify your OEM part number from your original unit to help ensure fitment.
  • Replaces: Oem Part Numbers: / Mercruiser: 27-806868A2 / 2780686802 | Volvo Penta: 3853380 | Sierra: 18-4375 / 184375 | Glm: 39540 | Fel-Pro: 17140 / / Specifications: / Type: Lower Conversion Gasket Set Engine: Gm Gen Iv 7.4L (454 Cid) / 8.2L (502 Cid) Big Block V8 Rear Main Seal: 2-Piece Note: Generation Iv 454/502 Cid With 2-Piece Rear Main Seal Condition: New / / Applications: / Fits Gm Marine Inboard And Sterndrive Engines — See Applications Column For Full Details.
  • Applications: Mercruiser 7.4L / 8.2L Gen Iv Inboard & Sterndrive (2-Pc Rms): / Mercruiser 7.4L Mag Gen Iv 310-330Hp Gm 454 Cid (2-Piece Rms, To 1991) / Mercruiser 7.4L Mag Inboard 330Hp Gm Gen Iv 454 Cid (2-Piece Rms) / Mercruiser 8.2L Mag 370Hp Gm Gen Iv 502 Cid (2-Piece Rms) / Mercruiser 454 Mag Bravo One 330Hp Gm Gen Iv (2-Piece Rms) / / Omc Sterndrive 7.4L / 8.2L Gen Iv (2-Pc Rms): / Omc Sterndrive 7.4L 270Hp Gm Gen Iv 454 Cid (2-Piece Rms) / Omc Sterndrive 8.2L 300Hp
  • Applications: 300Hp Gm Gen Iv 502 Cid (2-Piece Rms) / / Volvo Penta 7.4L / 8.2L Gen Iv: / Volvo Penta 7.4Gl Gen Iv 310Hp Gm 454 Cid (2-Piece Rms) / Volvo Penta 8.2Gl Gen Iv 340Hp Gm 502 Cid (2-Piece Rms) / / Crusader / Marine Power 454/502 Gen Iv: / Crusader 454 Cid 330Hp Gm Gen Iv Big Block (2-Piece Rms) / Marine Power 454/502 Cid Gm Gen Iv Big Block (2-Piece Rms) / ...
  • Lower Conversion Gasket Set Source: Aftermarket
Brand Rareelectrical
Model Aftermarket Lower Conversion Gasket Set
Exterior Machined
Item Weight 3 pounds
Manufacturer RAREELECTRICAL
Item model number 502-140-2Z8
Product Dimensions 15 x 13 x 1.7 inches
Manufacturer Part Number 502-140-2Z8

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