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 MANUALSJEEP2009COMPASS 4WD L4-2.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
2009 Jeep Compass 4WD L4-2.0L
Piston, Engine
2009 Jeep Compass 4WD L4-2.0LSECTION Piston, Engine
PISTON
Piston Diameter
A 85.995 - 86.015 mm (3.3856 - 3.3864 in.)
B 86.005 - 86.025 mm (3.3860 - 3.3868 in.)
C 86.015 - 86.035 mm (3.3864 - 3.3872 in.)
Clearance to Bore (-0.015) - 0.015 mm ((-0.0006) - 0.0006 in.)
Weight 345 - 355 grams (12.17 - 12.52 oz.)
Land Clearance (Diametrical) 0.60 - 0.73 mm (0.0236 - 0.0287 in.)
Piston Length 49.0 mm (2.929 in.)
Piston Diameter
A 85.995 - 86.015 mm (3.3856 - 3.3864 in.)
B 86.005 - 86.025 mm (3.3860 - 3.3868 in.)
C 86.015 - 86.035 mm (3.3864 - 3.3872 in.)
Clearance to Bore (-0.015) - 0.015 mm ((-0.0006) - 0.0006 in.)
Weight 345 - 355 grams (12.17 - 12.52 oz.)
Land Clearance (Diametrical) 0.60 - 0.73 mm (0.0236 - 0.0287 in.)
Piston Length 49.0 mm (2.929 in.)
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.