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 MANUALSMAZDA2009B4000 V6-4.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLY
2009 Mazda B4000 V6-4.0L
Cylinder Head Assembly
2009 Mazda B4000 V6-4.0LSECTION Cylinder Head Assembly
LH cylinder head
NOTE:Cylinder head bolts are a torque-to-yield design. New bolts must be installed.Install the eight 12 mm (0.47 in) bolts and tighten in the sequence shown in two stages.
- Stage 1: 12 Nm {1.2 kgf-m, 9 ft-lbf}
- Stage 2: 25 Nm {2.5 kgf-m, 18 ft-lbf}
Install the two 8 mm (0.31 in) bolts.
Tighten the eight 12 mm (0.47 in) bolts in two stages in the sequence shown.
- Stage 1: Tighten the bolts 90 degrees.
- Stage 2: Tighten the bolts an additional 90 degrees.
RH cylinder head
NOTE:Cylinder head bolts are a torque-to-yield design. New bolts must be installed.Install the eight 12 mm (0.47 in) bolts and tighten in the sequence shown in 2 stages.
- Stage 1: 12 Nm {1.2 kgf-m, 9 ft-lbf}
- Stage 2: 25 Nm {2.5 kgf-m, 18 ft-lbf}
Install the two 8 mm (0.31 in) bolts.
Tighten the eight 12 mm (0.47 in) bolts in two stages in the sequence shown.
- Stage 1: Tighten the bolts 90 degrees.
- Stage 2: Tighten the bolts an additional 90 degrees.
Camshft Bearing Caps
Tighten the bolts in the sequence shown in 2 stages.
Tightening Torque
Stage 1: 6 Nm {0.6 kgf-m, 53 in-lbf}
Stage 2: 16 Nm {1.6 kgf-m, 12 ft-lbf}
Intake Manifold Specifications
Exhaust Manifold Specifications
Camshaft Sprocket Specifications
NOTE:Cylinder head bolts are a torque-to-yield design. New bolts must be installed.Install the eight 12 mm (0.47 in) bolts and tighten in the sequence shown in two stages.
- Stage 1: 12 Nm {1.2 kgf-m, 9 ft-lbf}
- Stage 2: 25 Nm {2.5 kgf-m, 18 ft-lbf}
Install the two 8 mm (0.31 in) bolts.
Tighten the eight 12 mm (0.47 in) bolts in two stages in the sequence shown.
- Stage 1: Tighten the bolts 90 degrees.
- Stage 2: Tighten the bolts an additional 90 degrees.
RH cylinder head
NOTE:Cylinder head bolts are a torque-to-yield design. New bolts must be installed.Install the eight 12 mm (0.47 in) bolts and tighten in the sequence shown in 2 stages.
- Stage 1: 12 Nm {1.2 kgf-m, 9 ft-lbf}
- Stage 2: 25 Nm {2.5 kgf-m, 18 ft-lbf}
Install the two 8 mm (0.31 in) bolts.
Tighten the eight 12 mm (0.47 in) bolts in two stages in the sequence shown.
- Stage 1: Tighten the bolts 90 degrees.
- Stage 2: Tighten the bolts an additional 90 degrees.
Camshft Bearing Caps
Tighten the bolts in the sequence shown in 2 stages.
Tightening Torque
Stage 1: 6 Nm {0.6 kgf-m, 53 in-lbf}
Stage 2: 16 Nm {1.6 kgf-m, 12 ft-lbf}
Intake Manifold Specifications
Exhaust Manifold Specifications
Camshaft Sprocket Specifications
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.