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 MANUALSJEEP2009PATRIOT 4WD L4-2.4LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
2009 Jeep Patriot 4WD L4-2.4L
Piston, Engine
2009 Jeep Patriot 4WD L4-2.4LSECTION Piston, Engine
PISTON
Piston Diameter
A 87.995 - 88.015 mm (3.4644 - 3.4652 in.)
B 88.005 - 88.025 mm (3.4648 - 3.4656 in.)
C 88.015 - 88.035 mm (3.4652 - 3.4659 in.)
Clearance to Bore (-0.015) - 0.015 mm ((-0.0006) - 0.0006 in.)
Weight 302 - 312 grams (10.65 - 11.00 oz.)
Land Clearance (Diametrical) 0.60 - 0.73 mm (0.0236 - 0.0287 in.)
Piston Length 51.5 mm (2.028 in.)
Piston Diameter
A 87.995 - 88.015 mm (3.4644 - 3.4652 in.)
B 88.005 - 88.025 mm (3.4648 - 3.4656 in.)
C 88.015 - 88.035 mm (3.4652 - 3.4659 in.)
Clearance to Bore (-0.015) - 0.015 mm ((-0.0006) - 0.0006 in.)
Weight 302 - 312 grams (10.65 - 11.00 oz.)
Land Clearance (Diametrical) 0.60 - 0.73 mm (0.0236 - 0.0287 in.)
Piston Length 51.5 mm (2.028 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.