- Brand: Mercury
- Size: 9.9 10 15 20 HP
- Style: 2 Cylinder - 4-Stroke
- Condition: Used
- SKU: 50156 PWH
- Manufacturer Part Number: 8M0235085 8M0134425 8M0143240 8M0134432 8M0140578
- Country of Manufacture: United States
- Motor & Engine Type: Mercury
- Part Type: Motors, Engines & Components
- Surface Finish: Painted, Black
- Inventory Number: 50156 PWH
- Website Category: Powerhead
- Website Sub Category: Complete Powerheads
- UPC: N/A
- Shipping: $75.00
Part Number
Cylinder Block: 8M0143240 Cylinder Head: 8M0134432
Condition
- ◆Complete long block — includes the cylinder head and internals (block, crank, pistons, rods, cam). No carburetors or external accessories.
- ◆Removed from a 20 HP Mercury EFI. Cylinder 2 read about 20% low; on teardown the head gasket had been leaking, with no other issues found. Cylinder walls are clean with no scoring, valves seat well, and the cam shows no scoring.
- ◆Plan to replace the head gaskets, head bolts, and spark plugs. The hard-to-find cylinder head 8M0134432 is included.
- ◆Sold with no returns — see the photos for exactly what is included.
Fitment
- ◆Mercury 9.9, 10, 15 & 20 HP four-stroke. Verify by serial.
Donor: 20 HP
We’ve cross-referenced fitment with the resources available to us; it may not cover every model in the years and horsepowers listed. Verify the part number or your engine serial before purchasing — we’re glad to help.
Our Guarantee
While we do not accept returns on this part, we promise to do our very best to describe and photograph it accurately and to be straight with you about its condition. If something doesn’t sit right after it arrives, send us a message — a real person on this end will help make it right.
Disclaimer
We use various web resources to cross-reference and describe our parts. These are not always 100% accurate but they are accurate to the best of our knowledge. Verify by model or serial number that you’re getting what you need.
