VANOS Adjuster Unit (Complete), Rebuilt - E46 M3, MZ3, Z4M, S54

Fully rebuilt and upgraded double-VANOS adjustment unit for the E46 M3, MZ3, and Z4M. This is a rebuilt unit using all of the tricks and special internal seals required for long-lasting performance on the S54 VANOS.

Dr. VANOS S54 Features (included with every unit) -

• New OE BMW solenoids
• New solenoid valves and high pressure oil regulator
• CNC modified oil pump disc for exhaust hub
• upgraded piston seals
• VANOS housing profile gasket

VANOS (or VAN0S) is BMW's variable valve timing system. The VANOS unit is basically a pump and solenoid that rotates the camshaft to make more torque at various RPM. Having a variable camshaft means the M3 S54 engine can make a lot of power in the high RPM without feeling too sluggish in the lower RPM. Any problem with the S54 VANOS unit will have a major effect on performance and drivability, including misfires, fault codes (VANOS jammed), rough running, sluggish performance, poor fuel mileage, and the dreaded "marbles in a can" rattle sound.

Overall, the S54 timing system has a few weak points with the VANOS being the most obvious. Other areas that need attention are the guide rails and the exhaust cam sprocket and mounting bolts.

This item is a complete S54 VANOS unit rebuilt by Dr. VANOS - the leading VANOS specialist in the world. It comes with a one year warranty. This complete unit covers BMW part numbers 11367838161, 11367832029, 11367839180, 11367838080, 11367831906.

The price shown includes a refundable $500 core charge. The supply of original parts for rebuilding keeps the final purchase price low. The core must match the part that was supplied in terms of fitment, type, application, accessories, and hardware. Damaged or modified cores will not receive a refund. A core charge can only be refunded once the core has been inspected and approved. Click here for our Core Policy.