Volvo Penta 3853917 3858437 Sierra 18-21752 GM Engine Coupler 4.3L 5.0L 5.7L
This is a Sierra Aftermarket 18-21752 Engine Coupler that replaces any of the GM "V-Engines - 4.3 / 5.0/ 5.7" 1-Piece Rear Main seal engines (3" across bolt pattern for the crankshaft)
Item Details
- Fits 4.3L V6 OMC and Volvo Penta engines from 1987-1998
- Fits 5.0L V8 305 OMC and Volvo Penta engines from 1987-1988
- Technically anything 1987 & up but don't confuse for the Ford V8 5.0L models which was a completely different animal)
- Fits 5.7L V8 350 OMC and Volvo Penta engines from 1986-92, 1994, and from 1996-98
- DOES NOT FIT 3.0L GM 4-cyl 140hp engines 1990 & newer WITH 1-piece rear oil seal as it is slightly different
- Yours should look just like this.
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Compatible / Equivalent Part Numbers:
- Volvo Penta 3858437
- Volvo Penta 3853917
- OMC Cobra 986120 / 0986120
- OMC Cobra 984290 / 0984290
- Sierra 18-21752-1 (Stamped)
- Splines are in very good shape
- If you are unsure if this will work for you, just ask.
- Purchase with confidence!
