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.
2007 Mazda 3 L4-2.0LFACTORY OEM SERVICE PROCEDURE
Tightening Torques
Cylinder Head
Measure the length of each cylinder head bolt.
Replace any that exceeds maximum length.
Cylinder Head Bolt Length L 145.2 - 145.8 mm (5.717 - 5.740 in)
Cylinder Head Bolt Maximum 146.5 mm (5.767 in)
Tighten the cylinder head bolts in the order shown with the following 5 steps using the SST (49 D032 316).
Tightening torque
(1) 3 - 11 Nm (30.6 - 112 kgf-cm, 26.6 - 97.3 in-lbf)
(2) 13 - 17 Nm (1.4 - 1.7 kgf-m, 9.59 - 12.5 ft-lbf)
(3) 43 - 47 Nm (4.4 - 4.7 kgf-m, 31.8 - 34.6 ft-lbf)
(4) 88° - 92°
(5) 88° - 92°
Camshaft Bearing
Tighten the camshaft cap bolts in the order shown with the following two steps.
Tighten torque
(1) 5.0 - 8.0 Nm (51.0 - 81.5 kgf-cm, 44.3 - 70.8 in-lbf)
(2) 14 - 17 Nm (1.5 - 1.7 kgf-m, 10.4 - 12.5 ft-lbf)
Exhaust Manifold
Tighten the exhaust manifold installation nuts in the order shown in the figure.
Tightening torque 43 - 64 Nm (4.4 - 6.5 kgf-m, 32 - 47 ft-lbf)
Water Pump
Measure the length of each cylinder head bolt.
Replace any that exceeds maximum length.
Cylinder Head Bolt Length L 145.2 - 145.8 mm (5.717 - 5.740 in)
Cylinder Head Bolt Maximum 146.5 mm (5.767 in)
Tighten the cylinder head bolts in the order shown with the following 5 steps using the SST (49 D032 316).
Tightening torque
(1) 3 - 11 Nm (30.6 - 112 kgf-cm, 26.6 - 97.3 in-lbf)
(2) 13 - 17 Nm (1.4 - 1.7 kgf-m, 9.59 - 12.5 ft-lbf)
(3) 43 - 47 Nm (4.4 - 4.7 kgf-m, 31.8 - 34.6 ft-lbf)
(4) 88° - 92°
(5) 88° - 92°
Camshaft Bearing
Tighten the camshaft cap bolts in the order shown with the following two steps.
Tighten torque
(1) 5.0 - 8.0 Nm (51.0 - 81.5 kgf-cm, 44.3 - 70.8 in-lbf)
(2) 14 - 17 Nm (1.5 - 1.7 kgf-m, 10.4 - 12.5 ft-lbf)
Exhaust Manifold
Tighten the exhaust manifold installation nuts in the order shown in the figure.
Tightening torque 43 - 64 Nm (4.4 - 6.5 kgf-m, 32 - 47 ft-lbf)
Water Pump
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.