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 MANUALSAUDI2012S4 QUATTRO SEDAN (8K2) V6-3.0L SC (CCBA)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSEXHAUST SYSTEMSYSTEM SPECIFICATIONS
2012 Audi S4 Quattro Sedan (8K2) V6-3.0L SC (CCBA)
System Specifications
2012 Audi S4 Quattro Sedan (8K2) V6-3.0L SC (CCBA)SECTION System Specifications
Fastener Tightening Specifications
Left Exhaust Manifold, Tightening Specifications and Sequence
• Replace the nuts.
• Coat the thread on the nut with hot bolt paste; for the correct hot bolt paste, refer to the Parts Catalog.
- Tighten the nuts in 3 steps according to the tightening sequence:
Right Exhaust Manifold, Tightening Specifications and Sequence
• Replace the nuts.
• Coat the thread on the nut with hot bolt paste; for the correct hot bolt paste, refer to the Parts Catalog.
- Tighten the nuts in 3 steps according to the tightening sequence:
Secondary Air Combination Valve Heat Shield - Tightening Specification
- Tighten the heat shield bolts - arrows - - 1 - to 9 Nm.
Individual Catalytic Converter Mounting Components
1. Nut - 23 Nm
2. Spacer sleeve
3. Pressure spring
4. Washer
5. Bolt
6. Bolt - 23 Nm
7. Spacer sleeve
8. Adjusting buffer
9. Tab
10. Bolt - 23 Nm
11. Bracket
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.