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Now with a Limited Lifetime Warranty!
The Stewart Components Performance Water Pump is absolutely the best water pump ever produced for a BMW car. Stewart Components is the leading producer of water pumps for NASCAR, Ford, and Chevy V-8 domestic race cars, as well as many newer electric OEM applications from BMW and Mercedes.
The unique Stewart Water Pump solves many problems associated with the stock design and later aftermarket evolutions, and it introduces impressive performance and durability features:
- 15% flow increase - Twice as efficient as a factory pump - Stainless steel impeller - Silicon carbide and sintered carbon graphite seal
The initial factory plastic impeller water pump design was lightweight and provided adequate flow for low RPM use, but it would eventually crack and fail. Later designs used a heavier metal impeller that proved to be very hard on the bearings in the unit. Stewart has used a proprietary impeller that reduces strain on the bearings and seals in the water pump unit, which means greater life for the bearings. Additionally, an oversized FAG bearing and high-quality seal ensure long life.
The Stewart Water Pump impeller design allows for more fluid to be pumped at any given RPM. At high RPM it eliminates cavitation of the pump completely, which means more cooling for your car, completely eliminating the elevated temps seen by many on the track. Racers will be able to further underdrive this pump for even less less power loss.
Fits all M50, M52, M52TU, M54, M56, S50 and S52 6-cylinder BMWs.
Contact BimmerWorld regarding warranty concerns.
BMW Fitments:
3 Series E36 (92-99) > 323ic E36 (92-99) > 323is E36 (92-99) > 325i E36 (92-99) > 325ic E36 (92-99) > 325is E36 (92-99) > 328i E36 (92-99) > 328ic E36 (92-99) > 328is E36 (92-99) > M3 (1995) E36 (92-99) > M3 (96-99) 3 Series 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 E34 (89-95) > 525i M50 5 Series E39 (97-03) > 525i E39 (97-03) > 528i 97-98 E39 (97-03) > 528i 99-00 E39 (97-03) > 530i 5 Series E60 / E61 (04-10) > 525i M54 (2004-2005) E60 / E61 (04-10) > 530i M54 (2004-2005) X5 Series E53 X5 (00-06) > X5 3.0i M54 Z Series E36/7 / E36/8 Z3 (96-02) > Z3 2.5 E36/7 / E36/8 Z3 (96-02) > Z3 2.8 97-98 E36/7 / E36/8 Z3 (96-02) > Z3 2.8 99-00 E36/7 / E36/8 Z3 (96-02) > Z3 3.0 E36/7 / E36/8 Z3 (96-02) > Z3 M - S52 Z Series E85 / E86 Z4 (03-08) > Z4 2.5i M54 E85 / E86 Z4 (03-08) > Z4 3.0i M54
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$177.99
Stewart Performance Water Pump - E36, E46, E34, E39, E60, E83, E53, Z3, Z4
The last water pump you will buy for your car with a Lifetime Warranty!
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