BMW Cooling System Parts & Accessories for BMW 1 Series E82 (2008-2013)

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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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Black Magic Parts Cylinder Head Coolant Flange - BMW N52 N54 N55 3.0L...
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Precision Raceworks - Corporate Logo
T#:38094360
Part#: 601-0003
In Stock
$ 24.99 USD
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The Black Market Parts (by Precision Raceworks) BMW Billet Coolant Flange was designed as a replacement for the factory plastic flange that is found in the hose that connects the thermostat to the cylinder head. The plastic flange commonly cracks, which leads to coolant loss and engine overheating. Replace your coolant flange before disaster occurs and leaves you stuck on the side of the road.
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Precision Raceworks Coolant Tank & Power Steering Bracket W/ Harness ...
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T#:38229115
Part#: 622-0079
In Stock
$ 69.99 USD
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The E9X / E8X Coolant Tank & Power Steering Bracket w/ Harness is all of the hardware necessary to relocate your power steering pump and install a factory coolant tank on the driver's side of your vehicle. These are the same high-quality components that are included with our E9X/ E8X relocated inlet kits.
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N54 Billet 90 Degree Coolant Tank Fitting
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Vargas Turbo Technologies - Corporate Logo
T#:12184492
Part#: VTT-COOLANT-90-1
In Stock
$ 37.99 USD
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$ 37.99 USD
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Enhance the flexibility of your BMW's coolant system with the Vargas Turbo Technologies 90-Degree Coolant Tank Fitting. Ideal for applications such as single turbo setups or forward-facing intake manifolds, this fitting provides extra clearance and versatile hose routing options.

Key Benefits:

  • Allows hose to run straight down, increasing clearance
  • Made of durable 6061-T6 aluminum for long-lasting performance
  • Anodized black finish for enhanced durability and corrosion resistance
  • Includes fitting and clamp for easy installation

Upgrade your BMW's coolant system with the Vargas Turbo Technologies 90-Degree Coolant Tank Fitting for improved performance and versatility.

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VTT Billet Coolant Reservoir Cap - Anodized Blue - Most BMWs 2006+ (E...
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Vargas Turbo Technologies - Corporate Logo
T#:7530036
Part#: COOLANTCAPBLUE
In Stock
$ 79.99 USD
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$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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VTT Compete N54 Coolant Hose Kit - E8X, E9X N54
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Vargas Turbo Technologies - Corporate Logo
T#:590227
Part#: VTT-N54-COOLANT-
In Stock
$ 469.99 USD
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$ 469.99 USD
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A complete upgrade to the weak factory hoses.
VTT Billet Coolant Reservoir Cap - Anodized Red - Most BMWs 2006+ (E/...
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T#:7530034
Part#: COOLANTCAPRED
In Stock
$ 79.99 USD
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$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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VTT N54 "Mickey Mouse" Cylinder Head Adapter W/ O-ring And Clamp (No ...
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Vargas Turbo Technologies - Corporate Logo
T#:26404815
Part#: VTT-N54-COOLANT9
Ships in 4 Business Days
$ 31.99 USD
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$ 31.99 USD
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VTT Billet Coolant Reservoir Cap - Anodized Clear - Most BMWs 2006+ (...
This coolant cap retains ALL of the factory provisions by simply allowing you to snap t...
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Vargas Turbo Technologies - Corporate Logo
T#:7530035
Part#: COOLANTCAPRAW
Ships in 3 Business Days
$ 78.99 USD
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$ 78.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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VTT Complete Blue N54 Coolant Hose Kit
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Vargas Turbo Technologies - Corporate Logo
T#:17771579
Part#: VTT-N54-COOLANTB
In Stock
$ 464.99 USD
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Upgrade your BMW N54's cooling system with VTT's Billet/Silicone coolant hose upgrade kit. Designed to address common issues with factory plastic connectors and standard coolant hoses, this kit offers premium enhancements for durability and performance. Crafted with Billet 6061-T6 connectors for corrosion resistance and 6-ply molded silicone hoses in factory shapes, it ensures reliability and longevity for your BMW's cooling system.
  • Upgraded Billet 6061-T6 connectors for enhanced durability
  • Corrosion-resistant black anodized finish
  • 6-ply molded silicone hoses for superior performance
  • Factory-shaped design for easy installation
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VTT Billet / Silicone Full Coolant Hose Kit - Red - BMW E82/E88 E9X N...
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Vargas Turbo Technologies - Corporate Logo
T#:22987117
Part#: VTT-N54-COOLANTR
In Stock
$ 464.99 USD
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VTT is proud to announce our N54 Billet/Silicone coolant hose upgrade kit! The factory plastic coolant connectors are prone to breaking over time, and the hoses are just your standard run of the mill coolant hose. We wanted to provide an upgrade to both areas. What we came up with is Billet 6061-T6 connectors anodized black for corrosion resistance, and 6 ply silicone molded silicone hoses in the factory shapes. Full hose kit includes: Upper Radiator hose Lower Radiator hose Cylinder head outlet hose (Mickey Mouse hose, this hose is notorious for breaking when removed) Upper vent hose (this hose is also notorious for breaking as stock the center is plastic that crumbles when moved) Water pump inlet hose (Horse Shoe hose)
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BMW Blue Engine Coolant Reservoir Cap
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Precision Raceworks - Corporate Logo
T#:38161689
Part#: 201-0393-BLU
Ships in 7 Business Days
$ 115.99

This product was last offered at the strikethrough price on
01-22-2026

$ 109.99 USD
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$ 109.99 USD
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BMW Blue Engine Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the performance and appearance of their engine bay. Constructed from high-quality billet aluminum, this cap replaces the flimsy plastic factory cap, offering improved durability and a sleek, high-performance aesthetic.

Designed with precision, this coolant reservoir cap incorporates the OEM pressure relief function to maintain proper cooling system operation. Unlike inferior stick-on covers that may loosen over time, this cap is a complete replacement, ensuring a secure, leak-free fit. The blue anodized finish provides superior corrosion resistance, making it a reliable upgrade for daily drivers and track enthusiasts alike.

  • OEM pressure relief function – Ensures proper cooling system performance and safety
  • Billet aluminum construction – Provides enhanced durability and strength over factory plastic caps
  • Direct-fit replacement – Fully replaces the stock cap for a precise, secure fit
  • Blue anodized finish – Resists corrosion, heat, and wear for long-lasting performance
  • Motorsport-inspired design – Adds a sleek, professional look to the engine bay
  • Built for longevity – Engineered to withstand extreme temperatures and coolant exposure

Upgrade your BMW’s cooling system with the BMW Blue Engine Coolant Reservoir Cap, designed for superior reliability and style.

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VTT N54 Both Raditors Hoses Only
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Vargas Turbo Technologies - Corporate Logo
T#:590230
Part#: VTT-N54-COOLANT4
Ships in 10 Business Days
$ 439.99 USD
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$ 439.99 USD
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BMW Black Engine Coolant Reservoir Cap
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Precision Raceworks - Corporate Logo
T#:38161688
Part#: 201-0393-BLK
Ships in 9 Business Days
$ 115.99

This product was last offered at the strikethrough price on
01-22-2026

$ 109.99 USD
Free Shipping on orders $49 and up
$ 109.99 USD
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BMW Black Engine Coolant Reservoir Cap is a premium upgrade designed to enhance both the functionality and aesthetics of your BMW’s engine bay. Unlike flimsy plastic OEM caps, this high-performance cap is CNC-machined from durable billet aluminum, providing long-lasting strength and a sleek, motorsport-inspired look.

Built with precision, this cap retains the essential OEM pressure release function, ensuring proper cooling system operation without compromise. Unlike inferior adhesive covers that may detach over time, this cap fully replaces the factory component, delivering a secure and reliable fit. With a corrosion-resistant black anodized finish, it withstands extreme temperatures and harsh conditions while elevating your BMW’s under-hood appearance.

  • OEM pressure regulation – Maintains factory-designed pressure release for optimal cooling performance
  • CNC-machined billet aluminum – Provides exceptional durability and long-term reliability
  • Direct replacement – Fully replaces the stock cap, ensuring a perfect fit without modifications
  • Corrosion-resistant anodized finish – Prevents wear and adds a stealthy, high-performance look
  • Heat and fluid-resistant design – Built to withstand extreme temperatures and coolant exposure
  • Enhanced engine bay styling – Offers a sleek, motorsport-inspired upgrade

Upgrade your BMW’s cooling system with the BMW Black Engine Coolant Reservoir Cap, designed for superior performance and long-lasting durability.

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Precision Raceworks Driver Side Coolant Tank Brackets - Black Powder ...
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Precision Raceworks - Corporate Logo
T#:38094357
Part#: 601-0055
Ships in 6 Business Days
$ 39.99 USD
Free Shipping on orders $49 and up
This driver-side coolant tank mounting bracket set is ideal for those with relocated inlets or single turbo kits. It enables you to reposition your factory coolant tank to the driver's side of the engine bay. Best of all, it’s fully compatible with all known charge pipes.
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VTT Billet Coolant Reservoir Cap - Anodized Black - Most BMWs 2006+ (...
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Vargas Turbo Technologies - Corporate Logo
T#:7530033
Part#: COOLANTCAPBLK
Back Ordered
$ 79.99 USD
Free Shipping
$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Precision Raceworks Coolant Tank Sensor Extension Harness - BMW E9X E...
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Precision Raceworks - Corporate Logo
T#:1332002
Part#: 201-0050
In Stock
$ 19.99 USD
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The E9X/ E8X coolant tank level sensor extension harness is the same great product that comes standard with Precision Raceworks' E9X/ E8X relocated inlet kits. The coolant tank level sensor extension harness is perfect for those running a relocated coolant reservoir tank or 335D coolant reservoir. This harness plugs right into the factory connector allowing you to extend the position of the sensor without the need to splice any wires.
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Vargas Upgraded Silicone Upper Vent Hose - Black - BMW N54 E8X/E9X ...
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Vargas Turbo Technologies - Corporate Logo
T#:52164880
Part#: N54CLVTBLKO
Ships in 10 Business Days
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 Upgraded Silicone Coolant Hose Kit - Black - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:52129740
Part#: N54COOLFBO
Ships in 10 Business Days
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$ 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 Cylinder Head Outlet Coolant Adapter - BMW N54
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T#:51813338
Part#: VTT-N54-CAO
Ships in 10 Business Days
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$ 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 Billet Cylinder Head Outlet Adapter - Black - BMW N54/N55 ...
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T#:51918879
Part#: VTT-COOLADBLK
Ships in 10 Business Days
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$ 31.99 USD
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$ 31.99 USD
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The Vargas Billet Cylinder Head Outlet Adapter is the definitive solution for one of the most common failure points on the BMW N54 and N55 engines.

Vargas Billet Upper Coolant Line Block-Off - BMW N55 & S55 Engines ...
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T#:52094575
Part#: VTT-FAB-047
Ships in 10 Business Days
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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 Upgraded Silicone Upper Radiator Hose - Black - BMW N54 E8X/E9...
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T#:52164878
Part#: N54CLRADUBLKO
Ships in 10 Business Days
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$ 139.99 USD
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$ 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 Upgraded Silicone Radiator Hose Kit - Black - BMW N54 ...
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T#:52129743
Part#: N54COOLRADBLKO
Ships in 10 Business Days
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$ 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 Upgraded Silicone Cylinder Head Outlet Adapter - Black - BMW N...
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T#:52129739
Part#: VTTN54CLADOEM
Ships in 10 Business Days
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$ 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 Upgraded Silicone Lower Radiator Coolant Hose - Black - BMW N5...
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T#:52129742
Part#: VTTN54CLOWBLKO
Ships in 10 Business Days
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$ 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 Rear Coolant Plug - BMW N54
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T#:51778143
Part#: VTT-N54-RCP
Ships in 10 Business Days
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$ 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 Billet Cylinder Head Outlet Adapter - Blue - BMW N54/N55 ...
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T#:51918881
Part#: VTT-COOLADBLUE
Ships in 10 Business Days
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$ 31.99 USD
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$ 31.99 USD
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The Vargas Billet Cylinder Head Outlet Adapter is the definitive solution for one of the most common failure points in BMW N54 and N55 engines.

Vargas Upgraded Silicone Cylinder Head Outlet Hose - Black - BMW N54 ...
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T#:52129741
Part#: N54COOLHBO
Ships in 10 Business Days
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$ 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.

BMW Silver Engine Coolant Reservoir Cap
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Precision Raceworks - Corporate Logo
T#:38161691
Part#: 201-0393-SIL
Ships in 8 Business Days
$ 115.99

This product was last offered at the strikethrough price on
01-22-2026

$ 109.99 USD
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$ 109.99 USD
Free Shipping on orders $49 and up

BMW Silver Engine Coolant Reservoir Cap is a premium upgrade for BMW owners looking to enhance both the performance and appearance of their engine bay. Crafted from high-strength billet aluminum, this cap replaces the factory plastic version, offering superior durability and a refined, professional look.

Designed with functionality in mind, it integrates the OEM pressure relief system to ensure your engine's cooling system remains safe and efficient. Unlike adhesive covers, which can peel or wear over time, this cap is a direct-fit replacement, providing a secure and leak-proof seal. The silver anodized finish not only enhances the visual appeal but also ensures resistance to corrosion, high temperatures, and wear, making it perfect for daily driving and track use.

  • OEM pressure relief integration – Maintains proper cooling system performance and reliability
  • Durable billet aluminum – Outperforms factory plastic caps in longevity and strength
  • Precision-machined for perfect fitment – Replaces the stock cap securely, not just a cover
  • Anodized silver finish – Offers corrosion, heat, and wear resistance
  • Elevates engine bay aesthetics – Adds a clean, professional appearance
  • Built for both street and track use – Designed to withstand extreme conditions

Enhance your BMW’s cooling system with the BMW Silver Engine Coolant Reservoir Cap, providing both style and functionality for years to come.

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Vargas Rear Drain Block Off - BMW N54
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T#:51778139
Part#: VTT-N54-RDBO
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$ 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.