VAC S54 Exhaust Hub Upgrade - E46 M3, MZ3, Z4M

Stronger hub with larger tabs to eliminate or prevent tab failure

+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -

  •  

Price:
$599.95

The tabs on the exhaust cam hub drive the oil pump for the S54 VANOS unit act like pins that get inserted into a disc on the back of the VANOS unit. Unfortunately, the holes on the disc are too large which leads the tabs to vibrate inside the holes and eventually crack and break off. Broken exhaust hub tabs on the S54 will cause the VANOS to stop working and if one of the broken tabs ends up in the valvetrain, timing chain, or the oil pump chain, it could be game over for your engine.

VAC's solution for this very common S54 defect is a new camshaft hub manufactured from 4340HT Billet Bar and then heat treated to the BMW OE Rockwell Hardness spec. The VAC hub uses tabs that reduce the clearance from 1mm down to 0.2mm. The VAC VANOS Hub is a direct replacement for the original and does not require you to machine the VANOS gear or any other modifications. This design eliminates the need for modifying the pump ring or buying a replacement, which further saves you money. This upgraded design is not only significantly stronger, but the larger diameter pins minimize the huge clearance to greatly reduce or eliminate at least one S54 VANOS problem.

BMW Fitments:

3 Series
E46 (99-05) > M3
Z Series
E36/7 / E36/8 Z3 (96-02) > Z3 M - S54
Z Series
E85 / E86 Z4 (03-08) > Z4 M
Recently Viewed Products