BMW Cooling System Parts & Accessories for BMW 5 Series E60 (2004-2010)

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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.

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ECS - Corporate Logo
T#:49822518
Part#: 044952LA04KT
In Stock
New Item
Sale - Save 25% $ 477.99

This product was last offered at the strikethrough price on
06-14-2026

$ 358.49 USD
Free Shipping
Sale - Save 25%
$ 477.99

This product was last offered at the strikethrough price on
06-14-2026

$ 358.49 USD
Free Shipping

The N5X family of engines marked the start of a new era for BMW. The all-new aluminum block powerplants featured a host of technical upgrades, aiding in power output, reliability, and performance. Among these technological advances is an external electronic water pump, which removed load from the engine's accessory drive and allowed for advanced pulse-width-modulated (PWM) control.

From factory, the N52's electronic water pump is limited to a measly 200W output—strong enough for daily driving, but lacking in performance applications. Recognizing this shortcoming, ECS engineers set out to create a high-flow water pump upgrade that doesn't break the bank. Their high-quality adapter wiring harness and bracket allow you to install a 400W N54 water pump without any modification, an effortless, yet effective upgrade that doubles the output of the factory water pump!

By increasing coolant flow capacity, the 400W pump improves heat extraction from the cylinder head and engine block during high-load operation. This added thermal headroom is particularly beneficial for modified engines, sustained aggressive driving, track use, or operation in elevated ambient temperatures where the factory pump can operate near its limits. Improved circulation helps maintain more stable coolant temperatures and reduces the risk of localized hot spots.

Features & Benefits:

Upgrades to the more powerful 400W N54 water pump for increased coolant flow and improved engine cooling efficiency Sealed adaptor harness ensures secure connections and optimal operation under demanding conditions The N54 pump's higher power output offers longer-lasting, more effective cooling compared to the stock N52 pump Design:

40A fused power wire safely handles the increased power demands of the N54 pump, providing consistent and stable performance Sealed and robust construction, designed to withstand heat and moisture, ensuring reliability in even the most challenging environments Plug-and-play compatibility is designed for easy integration with the N52 engine and N54 water pump, minimizing installation time and complexity Kit Contents:

ECS N54 Water Pump Adapter Kit Conversion wiring harness Aluminum bracket Installation hardware Bavarian Autosport Water Pump (11517632426)

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ECS - Corporate Logo
T#:49822519
Part#: 044952LA04AKT
In Stock
New Item
$ 597.99 USD
Free Shipping
$ 597.99 USD
Free Shipping

The N5X family of engines marked the start of a new era for BMW. The all-new aluminum block powerplants featured a host of technical upgrades, aiding in power output, reliability, and performance. Among these technological advances is an external electronic water pump, which removed load from the engine's accessory drive and allowed for advanced pulse-width-modulated (PWM) control.

From factory, the N52's electronic water pump is limited to a measly 200W output—strong enough for daily driving, but lacking in performance applications. Recognizing this shortcoming, ECS engineers set out to create a high-flow water pump upgrade that doesn't break the bank. Their high-quality adapter wiring harness and bracket allow you to install a 400W N54 water pump without any modification, an effortless, yet effective upgrade that doubles the output of the factory water pump!

By increasing coolant flow capacity, the 400W pump improves heat extraction from the cylinder head and engine block during high-load operation. This added thermal headroom is particularly beneficial for modified engines, sustained aggressive driving, track use, or operation in elevated ambient temperatures where the factory pump can operate near its limits. Improved circulation helps maintain more stable coolant temperatures and reduces the risk of localized hot spots.

Features & Benefits:

Upgrades to the more powerful 400W N54 water pump for increased coolant flow and improved engine cooling efficiency Sealed adaptor harness ensures secure connections and optimal operation under demanding conditions The N54 pump's higher power output offers longer-lasting, more effective cooling compared to the stock N52 pump Design:

40A fused power wire safely handles the increased power demands of the N54 pump, providing consistent and stable performance Sealed and robust construction, designed to withstand heat and moisture, ensuring reliability in even the most challenging environments Plug-and-play compatibility is designed for easy integration with the N52 engine and N54 water pump, minimizing installation time and complexity Kit Contents:

ECS N54 Water Pump Adapter Kit Conversion wiring harness Aluminum bracket Installation hardware Pierburg Full Aluminum Water Pump (11515A05704) Installation:

- Click HERE for Installation Instructions -

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CSF Universal Large Single-Pass Oil Cooler - Universal Application ...
Universal fitment design - modifications may be necessary to run this cooler
CSF - Corporate Logo
T#:53608839
Part#: 8371
Ships in 4 Business Days
New Item
$ 499.00 USD
Free Shipping
$ 499.00 USD
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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.
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Vargas Turbo Technologies - Corporate Logo
T#:52164880
Part#: N54CLVTBLKO
Ships on Aug 6, 2026
New Item
$ 54.99 USD
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$ 54.99 USD
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The VTT N54 Upper Vent Hose is a critical upgrade for any BMW enthusiast looking to eliminate the weakest links in their cooling system.

Vargas Turbo Technologies - Corporate Logo
T#:52164878
Part#: N54CLRADUBLKO
Ships on Aug 6, 2026
New Item
$ 139.99 USD
Free Shipping
$ 139.99 USD
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The Vargas Turbo Technologies (VTT) N54 Upper Radiator Hose is a heavy-duty cooling upgrade designed specifically for high-performance BMW N54 engines.
Vargas Turbo Technologies - Corporate Logo
T#:52129740
Part#: N54COOLFBO
Ships on Aug 6, 2026
New Item
$ 354.99 USD
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$ 354.99 USD
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The VTT N54 Full Coolant Hose Kit replaces your entire aging coolant hose network with high-performance silicone alternatives.

Vargas Turbo Technologies - Corporate Logo
T#:52129743
Part#: N54COOLRADBLKO
Ships on Aug 6, 2026
New Item
$ 249.99 USD
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$ 249.99 USD
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The VTT Billet/Silicone Radiator Hose Kit is a heavy-duty cooling upgrade designed specifically for the BMW N54 engine.
Vargas Turbo Technologies - Corporate Logo
T#:52129741
Part#: N54COOLHBO
Ships on Aug 6, 2026
New Item
$ 74.99 USD
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$ 74.99 USD
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The VTT N54 Billet/Silicone Cylinder Head Outlet Hose, commonly referred to as the "Mickey Mouse" hose, is a vital upgrade for the BMW N54 engine.

Vargas Turbo Technologies - Corporate Logo
T#:51778143
Part#: VTT-N54-RCP
Ships on Aug 6, 2026
New Item
$ 41.99 USD
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$ 41.99 USD
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Engineered for durability and exact fitment, the VTT N54 Rear Coolant Plug is CNC-machined from high-quality 6061-T6 aluminum.

Vargas Turbo Technologies - Corporate Logo
T#:52129739
Part#: VTTN54CLADOEM
Ships on Aug 6, 2026
New Item
$ 19.99 USD
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$ 19.99 USD
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Address the weakest link in your N54 cooling system with the Vargas Turbo Technologies Billet Cylinder Head Outlet Adapter.
Vargas Turbo Technologies - Corporate Logo
T#:51813338
Part#: VTT-N54-CAO
Ships on Aug 6, 2026
New Item
$ 31.99 USD
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$ 31.99 USD
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Engineered for high-performance BMW builds, the Vargas Coolant Adapter replaces the weak factory plastic neck located at the front of the cylinder head.
Vargas Turbo Technologies - Corporate Logo
T#:52129742
Part#: VTTN54CLOWBLKO
Ships on Aug 6, 2026
New Item
$ 127.99 USD
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$ 127.99 USD
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The VTT Upgraded Silicone Lower Radiator Hose for the N54 engine is the perfect preventive maintenance item for any BMW owner.


Vargas Turbo Technologies - Corporate Logo
T#:52094575
Part#: VTT-FAB-047
Ships on Aug 6, 2026
New Item
$ 21.99 USD
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$ 21.99 USD
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When building a custom turbo kit, the "VTT-FAB-047" Block-Off Flange is an essential component for managing your BMW's thermal systems.
Vargas Turbo Technologies - Corporate Logo
T#:51778139
Part#: VTT-N54-RDBO
Back Ordered
New Item
$ 27.99 USD
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$ 27.99 USD
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Simplify your N54 engine build with the VTT Rear Drain Block Off.