Cart 0

MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021

MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021
Move your mouse over image or click to enlarge
MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021 MerCruiser GM 4cyl 120hp 140hp 2.5L 3.0L Flywheel 2778810 6355 3791021 3781021
$ 80.00
-Free Shipping On ALL Orders-

Fast & Free Shipping on All Orders!

14-Day Return Policy

Ships TODAY if you order before 12PM EST Mon-Fri

Item Details
  • 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!
Compatibility List
  • MerCruiser 120hp 2.5L / 140hp 3.0L 1969-1986
3781021 8781021 2778809

Share this Product


More from this collection