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 MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Piston Ring, Engine
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Piston Ring, Engine
Piston Ring
Groove Clearance
No. 1 0.03 to 0.08 mm (0.0012 to 0.0031 inch)
No. 2 0.02 to 0.06 mm (0.0008 to 0.0024 inch)
Oil (Side Rail) 0.03 to 0.11 mm (0.0012 to 0.0043 inch)
Ring End Gap
Standard
No. 1 0.30 to 0.40 mm (0.0118 to 0.0157 inch)
No. 2 0.50 to 0.60 mm (0.0197 to 0.0236 inch)
Oil (Side Rail) 0.15 to 0.40 mm (0.0059 to 0.0157 inch)
Maximum
No. 1 0.95 mm (0.0374 inch)
No. 2 1.05 mm (0.0413 inch)
Oil (Side Rail) 1.00 mm (0.0394 inch)
Groove Clearance
No. 1 0.03 to 0.08 mm (0.0012 to 0.0031 inch)
No. 2 0.02 to 0.06 mm (0.0008 to 0.0024 inch)
Oil (Side Rail) 0.03 to 0.11 mm (0.0012 to 0.0043 inch)
Ring End Gap
Standard
No. 1 0.30 to 0.40 mm (0.0118 to 0.0157 inch)
No. 2 0.50 to 0.60 mm (0.0197 to 0.0236 inch)
Oil (Side Rail) 0.15 to 0.40 mm (0.0059 to 0.0157 inch)
Maximum
No. 1 0.95 mm (0.0374 inch)
No. 2 1.05 mm (0.0413 inch)
Oil (Side Rail) 1.00 mm (0.0394 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.