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Ring Gear for Mercruiser 3.7L 224 CID 170 470 165 190 485 4 Cyl Marine Engines

  • Part #: BPIRG-157-N

$49.95

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157 Tooth Ring Gear for 3.7 liter Mercruiser applications. Replaces Mercruiser 43-97433A1.
Fits: Mercruiser 224 cid/3.7L inline 4 Cylinder 170, 470, 165, 190, 485

Nothing really goes wrong with a marine flywheel except the ring gear wears out. Most people don't even know this is replaceable.

Installation Tips:

1. Tap your old ring gear off with a blunt chisel and a hammer.
2. Place new ring gear in the oven on 500 degrees for about 30 minutes. Place the flywheel in a cool or cold environment.
3. Remove ring gear from oven using pliers or an oven mit and place on flywheel and just tap in place.
4. When the two metals become the same temperature, You're done!




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