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 HEAD ASSEMBLYSYSTEM SPECIFICATIONS
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
System Specifications
2007 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION System Specifications
CYLINDER HEAD

Using a 10 mm bi-hexagon wrench, uniformly tighten the 10 bolts in sequence.
Torque 79 Nm (806 kgf-cm, 58 ft. lbs.)
Mark the front side of the cylinder head bolt with paint.
Retighten the cylinder head bolts 90° in sequence.
Maximum warpage
Cylinder block side 0.05 mm (0.0020 in.)
Intake manifold side 0.08 mm (0.0031 in.)
Exhaust manifold side 0.08 mm (0.0031 in.)
Cylinder head journal bore diameter
Mark 1 40.000 to 40.008 mm (1.57480 to 1.57511 in.)
Mark 2 40.009 to 40.017 mm (1.57515 to 1.57547 in.)
Mark 3 40.018 to 40.025 mm (1.57551 to 1.57578 in.)
INTAKE MANIFOLD
Uniformly tighten the bolts in several passes.
Torque 30 Nm (306 kgf-cm, 22 ft. lbs.)
CAMSHAFT

Uniformly tighten the bolts in the sequence shown in the illustration.
Torque: Bearing cap No. 1 30 Nm (306 kgf-cm, 22 ft. lbs.)
Torque: Bearing cap No. 3 9.0 Nm (92 kgf-cm, 80 inch lbs.)
NO.2 CAMSHAFT

Uniformly tighten the bolts in the sequence shown in the illustration.
Torque: Bearing cap No. 2 30 Nm (306 kgf-cm, 22 ft. lbs.)
Torque: Bearing cap No. 3 9.0 Nm (92 kgf-cm, 80 inch lbs.)
CAMSHAFT TIMING GEAR OR SPROCKET
Torque 54 Nm (551 kgf-cm, 40 ft. lbs.
EXHAUST MANIFOLD

Install a new gasket and the exhaust manifold convert with the 5 nuts. Uniformly tighten the nuts in the sequence shown in the illustration.
Torque 37 Nm (337 kgf-cm, 27 ft. lbs.)

Install the No. 1 and No. 2 exhaust manifold stays with the 2 bolts and 2 nuts.
Torque 44 Nm (449 kgf-cm, 32 ft. lbs.)
Using a 10 mm bi-hexagon wrench, uniformly tighten the 10 bolts in sequence.
Torque 79 Nm (806 kgf-cm, 58 ft. lbs.)
Mark the front side of the cylinder head bolt with paint.
Retighten the cylinder head bolts 90° in sequence.
Maximum warpage
Cylinder block side 0.05 mm (0.0020 in.)
Intake manifold side 0.08 mm (0.0031 in.)
Exhaust manifold side 0.08 mm (0.0031 in.)
Cylinder head journal bore diameter
Mark 1 40.000 to 40.008 mm (1.57480 to 1.57511 in.)
Mark 2 40.009 to 40.017 mm (1.57515 to 1.57547 in.)
Mark 3 40.018 to 40.025 mm (1.57551 to 1.57578 in.)
INTAKE MANIFOLD
Uniformly tighten the bolts in several passes.
Torque 30 Nm (306 kgf-cm, 22 ft. lbs.)
CAMSHAFT
Uniformly tighten the bolts in the sequence shown in the illustration.
Torque: Bearing cap No. 1 30 Nm (306 kgf-cm, 22 ft. lbs.)
Torque: Bearing cap No. 3 9.0 Nm (92 kgf-cm, 80 inch lbs.)
NO.2 CAMSHAFT
Uniformly tighten the bolts in the sequence shown in the illustration.
Torque: Bearing cap No. 2 30 Nm (306 kgf-cm, 22 ft. lbs.)
Torque: Bearing cap No. 3 9.0 Nm (92 kgf-cm, 80 inch lbs.)
CAMSHAFT TIMING GEAR OR SPROCKET
Torque 54 Nm (551 kgf-cm, 40 ft. lbs.
EXHAUST MANIFOLD
Install a new gasket and the exhaust manifold convert with the 5 nuts. Uniformly tighten the nuts in the sequence shown in the illustration.
Torque 37 Nm (337 kgf-cm, 27 ft. lbs.)
Install the No. 1 and No. 2 exhaust manifold stays with the 2 bolts and 2 nuts.
Torque 44 Nm (449 kgf-cm, 32 ft. lbs.)
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.