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BMW Water Pumps for BMW E46 M3 S54 (1999-2005)

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The water pump is a known failure point on most BMWs, new and old. Older model BMWs come from the factory with a mechanical fan that features a plastic impeller. If your BMW still has a water pump with a plastic impeller, you should upgrade to one with a metal impeller to avoid future failure. New BMWs utilize an electric water pump that cost BMW millions of dollars to design - when it is working it is great, unfortunately these fail so regularly that we recommend replacing your electric water pump every 60,000 miles to avoid stranding yourself on the side of the road. We have hand selected the best OE suppliers for replacement water pumps so you don't have to pay the high cost of Genuine BMW. However, if you're someone who only puts Genuine BMW parts on your car, we understand - that's why we have those available for you as well.

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Water Pump - E46 M3

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T#:337986

Part#: 11517838118

In Stock

$ 312.99

This product was last offered at the strikethrough price on
03-31-2026

Starting at $ 301.11 USD

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Starting at $ 301.11 USD

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The E46 M3 does not suffer from the cooling nightmares of the previous E36 models. The original water pump uses a composite impeller, not plastic or metal, so the BMW pump will typically last 85,000+ miles before the bearings show signs of wear (the composite impeller is not the reason for preventative maintenance - it's the bearings). We prefer the OE BMW pump to the aftermarket brands because it uses the composite impeller, it has a proven reliability record, and the pricing represents a solid value upgrade. The pump is located on the front of the engine with the fan attached to it. The complexity of the S54 engine means the water pump has multiple gaskets and seals that should also be replaced. And if the thermostat has not been changed then this is the best time for a new one as well.

Optional Gaskets
The S54 water pump has multiple gaskets and O-rings that should be replaced at the same time. The water pump does not come from BMW with a profile gasket anyway and all of the hoses and thermostat housing have their own seals. We don't recommend re-using the original gaskets so we have an add-on kit that will have you covered during your water pump replacement -
1 x 11531318402, thermostat housing gasket to water pump housing
1 x 11537830709, coolant return pipe on thermostat housing
1 x 11517831099, water pump profile gasket
2 x 11537830712, coolant hose rubber O-rings

Composite vs Metal
BMW designed this water pump to use a composite impeller. It is much stronger than the plastic pieces that were so problematic in the mid-90s. The aftermarket solution to the plastic issues was to use a metal impeller. This solved the impeller issues but created some others. The metal impeller is heavier than composite or plastic and that led to quicker bearing failure on the E36 pump (sometimes within a year). The possibility exists that the same premature bearing failure can happen on the E46 M3 metal impeller pumps as well. The heavier weight also has the drawback of using more horsepower since it requires more effort to move the heavier piece. The composite materials solve all of these issues - light weight, strong, long lasting, and relatively inexpensive. They also come with a two-year warranty (most aftermarket pumps are one year). Original BMW water pumps for the E36 (and most other modern BMWs) now use a composite impeller so any issues with factory pumps are long gone. Original BMW water pumps for the E46 M3 are known to last over 100,000 miles and the composite is still in excellent condition (failure is usually typical leaks from worn bearings). For preventative maintenance we recommend a replacement around 85,000 miles. Alternate part numbers: 11517838118, 11517838159.

This item fits the following BMWs:
2001-2006 E46 BMW M3

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Water Pump Gasket - S54

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T#:12466

Part#: 11517831099

In Stock

14% off MSRP $ 41.99

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

$ 36.13 USD

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14% off MSRP

$ 41.99

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

$ 36.13 USD

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Steel water pump gasket for your Z3 / M3

E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley

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T#:367060

Part#: 002778ECS01

Ships on Nov 20, 2026

Sale - Save 10% $ 100.99

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

$ 90.89 USD

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Sale - Save 10%

$ 100.99

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

$ 90.89 USD

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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.

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Geba Water Pump - E46 M3 S54

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T#:348275

Part#: 11517838159

In Stock

$ 245.99 USD

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$ 245.99 USD

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The water pump in your vehicle keeps all that coolant flowing freely. If it begins to fail, overheating problems are inevitable. Don't take a chance on doing damage to engine internals by not replacing your water pump.

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BMW E46 M3 S54 3.2L Water Pump

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T#:378573

Part#: 11517838159

Ships in 1 Business Day

$ 105.79 USD

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$ 105.79 USD

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Includes sealing gaskets

Schwaben & Bav Auto Water Pump And Fan Clutch Tool Kit

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T#:375872

Part#: 001170SCH01AKT

In Stock

Sale - Save 25% $ 65.99

This product was last offered at the strikethrough price on
05-02-2026

$ 49.49 USD

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Sale - Save 25%

$ 65.99

This product was last offered at the strikethrough price on
05-02-2026

$ 49.49 USD

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Replacing the fan clutch on most BMW models requires holding the water pump pulley while removing the fan clutch lock nut. With less than 1 1/2" clearance on some models this project can easily turn into a mechanical nightmare. Using our special slim line fan clutch wrench in conjunction with the appropriate pulley spanner, the removal and installation required only a few moments.

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AAF E46 Transmission Crossmembers - 6-Speed M

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For M Models

T#:7624640

Part#: 116223

Ships in 3 Business Days

$ 190.00 USD

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$ 190.00 USD

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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. Ideal for the SE46 racing series, the AAF E46 6-speed Transmission Crossmember is a heavy-duty and worthwhile upgrade. The OEM thin cast aluminum cross member has been known to fail in multiple different ways. When using stiff engine and transmission mounts, the cross member can crack out and break around these mounting points. The cross member can also break from the high amounts of load transferred through the drive train. While chassis flex from hard cornering is being applied through the engine and transmission from the front cross member, this load is sent from the transmission back into the chassis at the transmission cross member. This is simply too much stress for the OEM cross member to hold up to under the extreme punishment of road racing. The AAF E46 Transmission Cross Member is completely constructed of 1/4' thick heavy-duty aluminum plate. It is designed specifically to cope with hours of endurance racing.

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Hex Bolt & Washer Kit

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T#:55245856

Part#: 0711990XXKTKT

Ships in 6 Business Days

$ 35.31 USD

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$ 35.31 USD

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Turner Motorsport offers this Genuine BMW Hex Bolt and Washer Kit to keep your chassis maintenance or engine refresh completely up to factory standard.

Bremmen Parts Water Pump - E46 M3 S54

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T#:36981065

Part#: 11517838159

Ships on Dec 2, 2026

Sale - Save 20% $ 138.99

This product was last offered at the strikethrough price on
05-03-2026

$ 110.97 USD

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Qty

Sale - Save 20%

$ 138.99

This product was last offered at the strikethrough price on
05-03-2026

$ 110.97 USD

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A failing water pump is a recipe for engine overheating and costly internal damage. Keep your coolant flowing and your engine protected by replacing your aging pump with this high-quality OE unit from Bremmen Parts.

Water pump replacement is suggested at 60,000 - 80,000 miles.

This pump includes the alignment dowel, sealing gasket, and thermostat sealing o-ring. We recommend picking up a water pipe sealing o-ring (11537830712) and thermostat (11531318274) for a comprehensive service.

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Genuine BMW Engine O-ring S54 3.2L 11537830709

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T#:13012

Part#: 11537830709

In Stock

$ 6.99 USD

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$ 6.99 USD

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Ensure your BMW remains leak-free by replacing all associated O-Rings when replacing the water pump. If experiencing leaks, inspect these rings for wear and tear. This O-Ring is specifically used on the return pipe to the thermostat housing.

Prevents leaks for enhanced car performance
Essential for maintaining a leak-free system
Inspects and replaces worn O-Rings for optimal functionality
Compatible with BMW models for hassle-free installation

GENUINE BMW O-RING:11709521.--

This item fits the following BMWs:
BMW M Series - M3, M3 Convertible
BMW Z Series - Z4 M Coupe, Z4 M Roadster

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Water Pump Installation Hardware Kit

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T#:55209926

Part#: 0071199KT

In Stock

$ 7.94 USD

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$ 7.94 USD

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This Genuine BMW water pump installation hardware kit is the exact factory refresh package needed to maintain the structural integrity of your cooling system's plumbing.

Water Pump O-Ring

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T#:555320

Part#: 11537830709

Ships in 1 Business Day

$ 2.99 USD

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$ 2.99 USD

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When it comes time to replace the water pump, be sure to replace all the O-Rings associated with it to ensure that your car stays leak free. If you are experiencing leaking issues, be sure to inspect these rings, as they might have worn down. This is used on the return pipe to the thermostat housing

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