MERCURY MARINE 780-9229A10 is the OEM component number. 40-50 HP; 4 cylinder; 2.580/.015 bore Wrist Pin (Not Sold Separately)18-4294 Circlips - replaces O.E.# 40-5203518-4621 Piston - replaces O.E.# 780-9229A1018-3967 Piston Ring - replaces O.E.# 39-18653A1 Wrist Pin (Not Sold Separately)18-4294 Circlips - replaces O.E.# 39-18653A1 Wrist.
Oil control rings are installed to scrape excess oil off the walls. A three-piece oil control ring in the bottom ring position distinguishes pistons. They virtually never have needle bearings between the wrist pin and connecting rod and almost always have a flat or dished top (like two-stroke engines). Hypereutectic pistons are fully machined.
The set includes rings, a pin, and two retainers.
Key Features:
- Aluminum alloy with a high silicon concentration is an exact replacement and same as the weight.
- Removes the necessity for unnecessarily replacing all pistons.
- The piston rings, bearings, wrist pins, and circlips can be swapped out.
- Original equipment manufacturer parts.
- Repairs are simple, faster, and less expensive of this feature.
- Hypereutectic pistons are fully machined.
Product Details:
- SKU: 18-4621
- UPC: 808282125189
- Weight: 0.72 LBS
- Brand: SeaStar Solutions
BORE SIZE: 2.580/.015
This product replaces:
- 47-4621, 780-9229A10, 808282125189
