As they age, the BMW S54 engine found in the E46 M3, Z3M and Z4M are known start having Vanos issues which makes the engine sound like a diesel and robs the mid range torque which is needed for these engines to run realiably and efficiently.
Notable VANOS (variable valve timing) issues are
- Solenoid Failures: Leads to poor performance and rough idling.
- Hub Bolts: Can shear off or loosen, causing engine damage.
- Camshaft Gear Bolts: Failures can misalign the camshaft.
- Seals and O-rings: Degrade over time, causing leaks and reduced performance.
- VANOS Rattle: Noise from worn gears and bearings.
- Oil Pump Drive Tab: Wears out, reducing oil pressure and causing failure.
Our Vanos Service Include-
- Mounting Gaskets
- Brand new BMW solenoid pack
- Viton O-rings for oil pressure return valve
- Modfied (re-drilled) oil pump disc
- Upgraded pistons seals and Viton o-rings
- Fully rebuilt housing
S54 Vanos Hub Repair Service
$1,899.99Price