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- Most popular VANOS repair solution
- Upgraded Teflon seals with improved material
- Comprehensive kit with all needed seals
- Excellent documentation and instructions
- Replace solenoids if testing shows degraded performance
- OEM Bosch solenoids recommended
- Intake: 11 31 7 511 408
- Exhaust: 11 31 7 511 409
- Available rebuilt units from various vendors
- New units from BMW (expensive)
- Consider if internal components are worn beyond seal replacement
- Some track builds delete VANOS entirely
- Locks cams at fixed timing
- Loses low-end torque but simplifies engine
- Not recommended for street cars