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 24 571 Replacing All Connecting Rod Bearings (N51)
Special tools required:
- 00 2 590
- 00 9 120
For the following special tools, refer to MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS -- 128I .
Modified procedure; the bearing shell colors are the same at the top and bottom.
Blue / Red bearing shell colors are no longer used in combination.
Necessary preliminary tasks:
- Removing oil pan . See 11 13 000 REMOVING AND INSTALLING, SEALING OR REPLACING OIL SUMP (N51) .
Possible classifications per connecting rod at top and bottom:
r: Red
b: Blue
Only one color may be fitted per big end and connecting rod.
In direction of arrow from (1 to 2) crank pin (1 to 6).
Example:
Possible classification:
Cylinder Classification Red / Red.
1:
Cylinder Classification Blue / Blue.
2:
Cylinder Classification Blue / Blue.
3:
Cylinder Classification Red / Red.
4:
Cylinder Classification Red / Red.
5:
Cylinder Classification Blue / Blue.
6:
Release conrod bolts (1).
Remove connecting rod bearing cap (2).
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.