JE Pistons J75008-4040-5 Piston Ring Set 4.040 in. Bore 0.0472 in. Top / 0.0591 in. 2nd / 0.118 in. Oil 8 Cyl.JE Piston Rings are designed to maximize horsepower through precision sealing of combustion pressure. They are offered in a huge selection of size
JE Piston Rings are designed to maximize horsepower through precision sealing of combustion pressure. They are offered in a huge selection of sizes, various materials, and in multiple thicknesses to suit a wide variety of engines. JE Pistons also offers an array of custom piston ring services including back cutting, dyke cutting, lapping, grinding, and PVD coating. These services, the same used by top NHRA Pro Stock and NASCAR teams, are now available to the public and offer tremendous gains in durability, power through reduced friction, and improved ring seal.
| Bore Diameter |
102.62|4.040 MM |
|---|---|
| Ring Type |
3 Ring |
| File Fit |
Yes |
| Top Ring Axial Height |
1.20 MM |
| Top Ring Radial Width |
0.145 IN |
| Top Compression Ring Thickness |
0.0472 IN |
| Top Ring Facing Material |
Plasma Moly |
| Top Ring Material |
Carbon Steel |
| Top Ring Shape |
Barrel Face, Back Cut, Torsional |
| Second Ring Axial Height |
1.50 MM |
| Second Ring Radial Width |
0.170 IN |
| Second Compression Ring Thickness |
0.0591 IN |
| Second Ring Facing Material |
Phosphate |
| Second Ring Shape |
Napier, Back Cut, Neutral |
| Oil Ring Axial Height |
3.00 MM |
| Oil Ring Radial Width |
0.152 IN |
| Oil Ring Thickness |
0.118 IN |
| Third Ring Facing Material |
Carbon Steel |
| Third Ring Material |
Carbon Steel |
| Third Ring Shape |
Full Seal, Flex Vent |
| Ring Set Thickness |
0.0472 in. Top x 0.0591 in. 2nd x 0.118 in. Oil |
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