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.
11 4 340 Pressure-testing fixture
Note: For pressure- testing cylinder head.
Engine: N51, N52, N53, N54
SI number: 1 17 04 (130)
Order number: 11 4 340
Pressure-testing fixture
Consisting of:
1 = 11 4 341 Baseplate with seal
2 = 11 4 342 Plate with thrust member
3 = 11 4 343 Hose with air connection
4 = 11 4 344 Adapter plate with valve
5 = 11 4 345 Set of screws
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.