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Rareelectrical Mercruiser Sterndrive Engine Coupler Compatible With Gm 4.3L V6 5.0L 5.7L V8 305 350 Cid Alpha One 2-Piece To 1-Piece Rear Main Seal Conversion Kit 14505A2 Omc 775495

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Product details

Management number 237620128 Release Date 2026/07/10 List Price US$167.47 Model Number 237620128
Category

MerCruiser Sterndrive Engine Coupler - GM V6 and V8 2-Piece to 1-Piece RMS Conversion Kit New hub-style engine coupler with complete mounting hardware for MerCruiser GM sterndrive applications. Designed for converting from an older 2-piece rear main seal engine with 3-1/2" crankshaft bolt pattern to a newer 1-piece rear main seal engine with 3" bolt pattern. Compatible with all MerCruiser GM V-6 4.3L (262 CID) and V-8 5.0L (305 CID) and 5.7L (350 CID) engines paired with Alpha One, MR, R, and Gen II sterndrives from 1986 and newer. Also replaces couplers on earlier MerCruiser models: MCM 228 V8 305 CID (1977-1982), MCM 260 V8 350 CID (1978-1982), MCM 185 V6 4BBL 229 CID (1983-1984), MCM 140 4-Cyl 181 CID (1968-1982), MCM 120 4-Cyl 153 CID (1964-1982), and MCM 3.0L 181 CID (1987-1989). MR stamped. Kit includes studs, flat washers, lock washers, and flange nuts. OEM PART NUMBERS: Mercury/Mercruiser: 14505A2 / 14505-A2 OMC: 775495 GLM: 11520 Mallory: 9-72500 SPECIFICATIONS: Type: Hub Style Conversion Coupler (MR Stamped) Conversion: 2-Piece RMS (3.5") to 1-Piece RMS (3") Engine: GM Pre-Vortec V-6 and V-8 Sterndrive: Alpha One / MR / R / Gen II Hardware: Studs, washers, lock washers, flange nuts included Condition: New APPLICATIONS: MCM 4.3L V6 / 5.0L V8 / 5.7L V8 Alpha Sterndrive (1986+) MCM 228/260/185/140/120/110 (1963-1984) MCM 3.0L (1987-1989) ⚠️ Verify OEM part number from your original unit before ordering to ensure proper fitment.

  • Compatible with Mercruiser. Please verify your OEM part number from your original unit to help ensure fitment.
  • Replaces: Oem Part Numbers: / Mercury/Mercruiser: 14505A2 / 14505-A2 / Omc: 775495 / Glm: 11520 / Mallory: 9-72500 / Specifications: / Product Type: Engine Coupler / Style: Old-To-New Style Conversion (2Pc To 1Pc Rear Main Seal) / Application: Crankshaft Mounted Hub Style Coupler / Bolt Pattern Conversion: 3-1/2" (Old) To 3" (New) / Engine Compatibility: Gm V-6 And V-8 (Pre-Vortec) / Sterndrive Type: Alpha One / Mr / R / Gen Ii / Includes: Mounting Studs,
  • Applications: Mercruiser Gm V-6 Sterndrive Engines: / Mcm 4.3L / 4.3Lx V6 262 Cid Alpha One Sterndrive (1986 &Amp; Up) / Mercruiser Gm V-8 Sterndrive Engines: / Mcm 5.0L / 5.0Lx V8 305 Cid Alpha One Sterndrive (1986 &Amp; Up) / Mcm 5.7L / 5.7Lx / Mag V8 350 Cid Alpha One Sterndrive (1986 &Amp; Up) / Mercruiser Earlier Models (2-Piece Rear Main Seal): / Mcm 228 V8 305 Cid (1977-1982) / Mcm 260 V8 350 Cid (1978-1982) / Mcm 185 V6 229 Cid 4Bbl (1983-1984) / Mcm 140
  • Applications: (1983-1984) / Mcm 140 4-Cyl 181 Cid (1968-1982) / Mcm 120 4-Cyl 153 Cid (1964-1982) / Mcm 110 4-Cyl 153 Cid (1963-1966) / Mcm 3.0L 4-Cyl 181 Cid (1987-1989) / / Compatible Sterndrive Units: / Alpha One / Mr / R / Gen Ii / / Purpose: / Old-To-New Style Conversion Coupler Used When Replacing A 2-Piece Rear Main Seal Engine (3-1/2" Crankshaft Bolt Pattern) With A Newer 1-Piece Rear Main Seal Engine (3" Bolt Pattern) / / Note:...
  • Engine Coupler Source: Aftermarket
ASIN B0FJHS6SKX
Brand Rareelectrical
Model Aftermarket Engine Coupler
Exterior Machined
Item Weight 10 pounds
Manufacturer RAREELECTRICAL
Item model number 337-510A1
Product Dimensions 9 x 9 x 9 inches
Manufacturer Part Number 337-510A1

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