Engine Rebuild Kit .020 Over
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Compatible Applications
| Brand | Application | Engine Type | Application Notes |
|---|---|---|---|
| Yamaha | V6 6R5 90° 23mm 150–200HP 1993-Up | 2-Stroke Outboard | Confirm fitment with your engine serial number |
What is Included
| Qty | Included Part | Part Number |
|---|---|---|
| 3 | ProV Piston Kit .020 Port | 4620PV |
| 3 | ProV Piston Kit .020 Starboard | 4620SV |
| 6 | Caged Wrist Pin Bearing, 23mm | 323 |
| 6 | Caged Rod Bearing | 836 |
| 12 | Rod Bolt, 90° | RB4000 |
| 1 | Upper Main Bearing | 6038 |
| 2 | Center Main Bearing Kit | 7626 |
| 1 | Lower Main Ball Bearing | 208 |
| 1 | Powerhead Gasket Kit | 2849 |
This is a .020" oversize kit
The pistons are .020" larger than standard, for a finished bore of 3.564". The cylinders must be bored and honed to match the pistons before assembly. Have your machine shop measure the bores and confirm the oversize you need before ordering.
What This Kit is Used For
This Pro Marine engine rebuild kit supplies the pistons, bearings, and gaskets needed to rebuild the powerhead on Yamaha V6 6R5 90° 23mm 150–200HP 1993-Up two-stroke outboards, in a .020" oversize configuration.
Key Features and Benefits
- Engine rebuild kit for Yamaha V6 6R5 90° 23mm 150–200HP 1993-Up
- Includes 6 ProV .020" oversize pistons (3 port, 3 starboard)
- Includes wrist pin, rod, and main bearings plus new rod bolts
- Includes powerhead gasket kit
Kit Details
- Kit Part Number: 4620KT
- Manufacturer: Pro Marine (Aftermarket)
- Engine Type: 2-stroke, 6-cylinder
- Piston Size: .020" Over
- Finished Bore: 3.564"
- Not Included: Crankcase sealant and needle bearing assembly grease
FAQ
What engines does this kit fit?
This kit fits Yamaha V6 6R5 90° 23mm 150–200HP 1993-Up two-stroke outboards. Confirm your model and serial number before ordering.
Do I need to bore my cylinders?
Yes. The pistons are .020" oversize, so the cylinders must be bored and honed to 3.564". Standard and other oversize kits are also available.
Why are there port and starboard pistons?
This engine uses side-specific pistons, so the kit includes 3 of each. Install each piston on its matching cylinder bank.
Is crankcase sealant included?
No. Crankcase sealant and needle bearing assembly grease are sold separately.
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