Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2001WRANGLER L4-2.5L VIN PREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER BLOCK ASSEMBLYSPECIFICATIONSPISTON SPECIFICATIONS
2001 Jeep Wrangler L4-2.5L VIN P
Piston Specifications
2001 Jeep Wrangler L4-2.5L VIN PSECTION Piston Specifications
| Weight (Less Pin) | Minimum | 14.7 Ounce (US) (oz (US)) | |
| Maximum | 15.1 Ounce (US) (oz (US)) | ||
| Compression Height | Minimum | 1.599 inch | |
| Maximum | 1.603 inch | ||
| Piston to Bore Clearance | Minimum | 0.0008 Inch (in) | |
| Maximum | 0.0015 Inch (in) | ||
| Ring Groove Height | Compression Rings | Minimum | 0.0602 inch |
| Maximum | 0.0612 inch | ||
| Oil Control Ring | Minimum | 0.1589 inch | |
| Maximum | 0.1598 inch | ||
| Ring Groove Diameter | Compression Ring #1 | Minimum | 3.48 Inch (in) |
| Maximum | 3.49 Inch (in) | ||
| Compression Ring #2 | Minimum | 87.63 Millimeter (mm) | |
| Maximum | 87.88 Millimeter (mm) | ||
| Oil Control Ring | Minimum | 3.53 Inch (in) | |
| Maximum | 3.54 Inch (in) | ||
| Pin Bore Diameter | Minimum | 0.9312 inch | |
| Maximum | 0.9315 inch | ||
| Piston to Pin Clearance | Minimum | 0.0005 inch | |
| Maximum | 0.0009 inch |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.