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 MANUALSTOYOTA2007HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Piston Ring, Engine
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Piston Ring, Engine
Piston ring
Ring groove clearance
Standard end gap
No. 1 0.22 to 0.32 mm (0.0087 to 0.0126 in.)
No. 2 0.50 to 0.60 mm (0.0197 to 0.0236 in.)
Oil (side rail) 0.10 to 0.35 mm (0.0039 to 0.0138 in.)
Maximum end gap
No. 1 0.89 mm (0.0350 in.)
No. 2 1.35 mm (0.0531 in.)
Oil (side rail) 0.73 mm (0.0287 in.)
Ring groove clearance
Standard end gap
No. 1 0.22 to 0.32 mm (0.0087 to 0.0126 in.)
No. 2 0.50 to 0.60 mm (0.0197 to 0.0236 in.)
Oil (side rail) 0.10 to 0.35 mm (0.0039 to 0.0138 in.)
Maximum end gap
No. 1 0.89 mm (0.0350 in.)
No. 2 1.35 mm (0.0531 in.)
Oil (side rail) 0.73 mm (0.0287 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.