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.
12 1 170 Spark Plug Tool
Minimum set: Mechanical tools
In conjunction with: 12 1 200
Engine: M40, M42, M43, M43TU, M44, M50, M52, M60, M62, M70, M73, N12, N14, N40, N42, N45, N46, N54, N73, S14, S38, S50B30, S50B32, S85, W10, W11
Storage location: B13
Order number: 12 1 170
Spark plug tool
Consisting of:
1 = 12 1 171 Spark plug key WAF 16 mm
In conjunction with: 12 1 172 (S50), 12 1 200 (M40, M42, M43, M44, M50, M52, M60, M62, M70, M73, W10, W11, N73)
2 = 12 1 172 Torque limiter 23 Nm ± 3 Nm
In conjunction with: 12 1 171 (S50), 12 1 160 (S14, S38)
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.