Home
Cooling

BMW Cooling System Parts & Accessories for BMW Z4 M Roadster S54 (2003-2008)

The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

Sub-Categories

Sort By:

E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley

T#:367060

Part#: 002778ECS01

Ships on Dec 3, 2026

Sale - Save 10% $ 100.99

This product was last offered at the strikethrough price on
06-13-2026

$ 90.89 USD

Add to Wish List

Qty

Sale - Save 10%

$ 100.99

This product was last offered at the strikethrough price on
06-13-2026

$ 90.89 USD

Add to Wish List

Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the S54 engine in the E46 M3, MZ3, and Z4M. It's the same size and uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.

Show More Show Less

Genuine BMW Thermostat - 80*C - E46 M3, MZ3 S54, Z4 M

T#:12502

Part#: 11531318274

Ships in 1-2 days

16% off MSRP $ 147.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 123.15 USD

Add to Wish List

Qty

16% off MSRP

$ 147.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 123.15 USD

Add to Wish List

GENUINE BMW THERMOSTAT - E46 M3, MZ3 (S54), MZ4. This is just the thermostat itself and does not include the housing o-ring or any others that are advised for replacement. See thermostat kit or our water pump kit for a complete package.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

Show More Show Less

Additional Water Pump - E90, E92, E93, Z4

T#:24649

Part#: 64118369806

In Stock

6% off MSRP $ 297.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 279.99 USD

Add to Wish List

Qty

6% off MSRP

$ 297.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 279.99 USD

Add to Wish List

Genuine BMW Additional Water Pump
This item fits the following BMW Chassis:
E85 Z4M,E85 Z4,E86 Z4,E90,E92,E93

Water Pump - Z3, Z4 M Roadster Z3 M Coupe with S54 engine

T#:2746

Part#: 11517838135

Ships in 4 Business Days

6% off MSRP $ 800.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 753.99 USD

Add to Wish List

Qty

6% off MSRP

$ 800.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 753.99 USD

Add to Wish List

Don't take your car's cooling system for granted!One of the biggest weak points is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits MZ3s & MZ4s with S54 engines. Genuine BMW. direct replacement for 11517838160 and 11517831908

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2001-2002 Z3 BMW Z3 M Coupe Z3 M Roadster
2006-2008 E85 BMW Z4 M Roadster M Coupe

Show More Show Less