GSR M52TU / M54 Four-Bolt Oil Pump Shaft

The GSR M52TU/M54 Four Bolt Oil Pump Shaft is the ultimate piece of engine insurance for your non-M E46, Z3/Z4 or any other M52TU/M54-powered BMW. Whether your car is a race car, dual-duty street/track car, or you simply enjoy spirited high-performance driving, your stock oil pump shaft is at risk for failure. 

The factory oil pump nut can back off, and the shaft has a known history of breaking at high RPM. Either of of these failures would quickly lead to oil starvation, leaving your engine as nothing but a very large and expensive multi-piece paperweight. 

GSR's M52TU/M54 Four Bolt Oil Pump Shaft replaces the failure-prone single-nut OEM sprocket retaining system on the M52TU/M54 engine. The replacement shaft is precision ground, machined, and hardened for superior wear characteristics and resistance to shear failure. The four-bolt mounting system prevents the pump nut from becoming loose and backing off. This package is far superior to welded or safety-wired versions of stock parts, or a single-fastener replacement.

Kit includes new pump shaft, sprocket, and inner rotor. Fully assembled - no pressing required. 

Note: M52TU engines are updated, dual VANOS equipped M52 units built in 1998-2000 and were only available in the E46 chassis. These pump upgrades are compatible with OE part number 11 41 7 501 568. This upgrade is NOT compatible with the M52 engines from an E36 chassis.

$300 core charge is included in price and will be refunded upon receipt of your rebuild-able core. Core MUST be received within two weeks of delivery of replacement unit. You may send your old cap & rotor before ordering to avoid the core charge.

M54 4 Bolt Oil Pump Shaft Core Program Instructions

Made in USA

BMW Fitments:

3 Series
E46 (99-05) > 320i
E46 (99-05) > 323Ci
E46 (99-05) > 323i
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 325xi
E46 (99-05) > 328Ci
E46 (99-05) > 328i
E46 (99-05) > 330Ci
E46 (99-05) > 330i
E46 (99-05) > 330xi
5 Series
E39 (99-00) > 528i (M52TU)
E39 (01-03) > 525i
E39 (01-03) > 530i
Z Series
E36/7 / E36/8 Z3 (99-00) > Z3 2.3 (M52TU)
E36/7 / E36/8 Z3 (99-00) > Z3 2.8 (M52TU)
E36/7 / E36/8 Z3 (99-02) > Z3 2.5 (M54)
E36/7 / E36/8 Z3 (96-02) > Z3 3.0 (M54)
Z Series
E85 / E86 Z4 (03-08) > Z4 2.5i M54
E85 / E86 Z4 (03-08) > Z4 3.0i M54