Crown Automotive
.020 Inch Oversized Piston and Pin for 79-86 CJs, SJ, J-Series 87-90 YJ, w/ 4.2L Eng Crown Automotive
SKU: C01X J8134441020
Description
Part #: J8134441020
.020 inch Oversized Piston and Pin for 1979-1986 CJ-5, CJ-7, CJ-8, SJ, J-Series 1987-1990 YJ Wrangler, w/ 4.2L EngineFeatures and Benefits:(6) Required.020 inch Oversized12-Month WarrantyFor Model w/ 4.2L (6-258) EngineSold IndividuallyUse Existing HardwareDetails:Material: Aluminum, SteelFinish: UnpaintedHardware Included: Use Existing HardwareInterchange: J8134441.020Application: 1979-1983 Jeep CJ-5 w/ 4.2L (6-258) Engine; 1979-1983 Jeep SJ Cherokee w/ 4.2L (6-258) Engine; 1979-1983 Jeep SJ Wagoneer w/ 4.2L (6-258) Engine; 1979-1986 Jeep CJ-7 w/ 4.2L (6-258) Engine; 1979-1986 Jeep J-Series J-10 w/ 4.2L (6-258) Engine; 1979-1986 Jeep J-Series J-20 w/ 4.2L (6-258) Engine; 1981-1986 Jeep CJ-8 Scrambler w/ 4.2L (6-258) Engine; 1984-1986 Jeep SJ Grand Wagoneer w/ 4.2L (6-258) Engine; 1987-1990 Jeep YJ Wrangler w/ 4.2L (6-258) EngineCrown Automotive carries over 9600 unique quality replacement parts encompassing over 766,000 different applications for every model of Jeep produced since 1941.
Features:
- .020" Oversized
- For Model w/ 4.2L (6-258) Engine
- Sold Individually
- (6) Required
- Use Existing Hardware
- 12-Month Warranty
.020" Oversized Piston and Pin for 1979-1986 CJ-5, CJ-7, CJ-8, SJ, J-Series 1987-1990 YJ Wrangler, w/ 4.2L Engine
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Crown Automotive |
| Part Number | C01X J8134441020 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy