MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021
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Item Details3781021 8781021 2778809
- Removed from a 1985 MerCruiser 3.0L.
- 12 3/4" Diameter! NOT FOR V6 or V8 applications!
- Used from 1970-1989 on virtually all MerCruiser 2.5L & 3.0L 120hp 140hp GM 4cyl applications
- Only for use with 2-piece rear man seal engines (Which was roughly 1990 when they switched over... 1-piece engines will measure 3" across between the bolt holes vs. this one which measures 3.5" across.
- Yours should look just like this.
- Cleaned & Repainted
- Also used in MerCruiser applications.
- 153 tooth unit. Center hole is 2.5"
- Stamped 3791021 (which commonly looks like 3781021)
- If you are unsure if this will work for you, just ask.
- Purchase with confidence!
- MerCruiser 120hp 2.5L / 140hp 3.0L 1969-1986