BMW Cooling System Parts & Accessories for BMW 3 Series E90 (2006-2011)

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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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Basic Cooling System Service Kit - E9X M3 S65 - Dry
Basic Cooling System Service Kit - E9X M3 S65 - Dry
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Packaged by Turner - Corporate Logo
T#:53891614
Part#: 17112283500KT
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Oil Filter Housing Replacement Kit
Oil Filter Housing Replacement Kit
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T#:57507416
Part#: 11428642283KT4
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Maintain reliable oiling system performance and prevent catastrophic oil leaks on the street or track with an Oil Filter Housing Replacement Kit. Designed to replace failing or heat-warped factory housings, this complete assembly cures problematic oil leakage while ensuring proper oil flow through your engine's lubrication circuit. Bundled with a fresh oil pressure sensor, factory sealing gaskets, and new mounting hardware, this kit provides a complete overhaul solution to safeguard engine health and ensure precise oil pressure readings under extreme operating conditions.
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Cooling System Service Kit
Cooling System Service Kit
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T#:57507415
Part#: 11428642283KT3
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Eliminate common top end oil leaks and fragile plastic cooling components with the ultimate preventive maintenance package for your BMW. Designed for thorough maintenance or prep before track days, this kit pairs a new oil filter housing assembly with fresh gaskets and hardware to restore leak-free oil pressure management. To address vulnerable factory cooling lines, the package includes an upgraded ECS billet aluminum coolant flange, replacing the failure-prone OEM plastic fitting with a permanent metal solution. Bundled with factory Genuine BMW coolant, this service kit delivers peace of mind under extreme driving conditions.
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Thermostat Installation Kit with Thermostat - N54, N55, S55
Thermostat Installation Kit with Thermostat - N54, N55, S55
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T#:55353595
Part#: OTN54.T85KT3
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High oil temperatures are the ultimate enemy of your engine's longevity and performance. If you want to keep pushing your BMW to the limit you need to manage the heat.
Mishimoto Water Pump - BMW E60, E82, E88, E89, E90, E92, E93 1
Mishimoto Water Pump - BMW E60, E82, E88, E89, E90, E92, E93 1 ...
Mishimoto - Corporate Logo
T#:51075062
Part#: MMWP-N54-07
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The Mishimoto Electric Water Pump is the ideal choice for enthusiasts performing preventative maintenance or a full cooling system overhaul.
Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55
Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55
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Rein - Corporate Logo
T#:53750144
Part#: CHU0629
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Upgraded Coolant Hose from Rein Featuring Metal Flanges to Reduce Leaks
Vargas Rear Drain Block Off - BMW N54
Vargas Rear Drain Block Off - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:51778139
Part#: VTT-N54-RDBO
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Simplify your N54 engine build with the VTT Rear Drain Block Off.
ECS Performance Coolant Outlet Hose Kit - E9X E82/E88 N55
ECS Performance Coolant Outlet Hose Kit - E9X E82/E88 N55
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ECS - Corporate Logo
T#:55497453
Part#: 060105LA01KT
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The perfect upgrade for the connection between your thermostat and cylinder head. Designed with durable silicone and billet aluminum to greatly outlast the OE rubber-and-plastic combination.

Some of the weakest points in BMW cooling systems can be the OE plastic fittings, which break down from constant temperature changes, softening these components. When this happens, even simply moving the hose slightly could cause the fitting to crack, causing the coolant to leak all over. The ECS design silicone hose with billet aluminum adapter retains OE fitment with superior strength to not only handle the performance, but also stand up to the wear and tear of a daily driver.

Features:

Manufactured from billet 6061-T6 and type III anodized for exceptional durability and corrosion resistance.

Much stronger part than OEM plastic

Will not become brittle and fatigue over time due to thermal cycling. This will prevent the part from breaking during removal and reinstallation.

Constructed of 4-ply reinforced silicone for improved durability over the failure-prone OE rubber hose. Fluorosilicone-lined internal layer for exceptional chemical resistance. Silicone offers reduced thermal conductivity as well as improved resistance to ozone and UV degradation for improved performance and durability. Follows OEM form for perfect fitment. Utilizes OEM O-ring 11537545278 to ensure a proper seal. Replaces Genuine BMW Part Number: 11537584549

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CSF Universal Large Single-Pass Oil Cooler - Universal Application
CSF Universal Large Single-Pass Oil Cooler - Universal Application ...
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Universal fitment design - modifications may be necessary to run this cooler
CSF - Corporate Logo
T#:53608839
Part#: 8371
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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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Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X
Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X
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Rein - Corporate Logo
T#:52516266
Part#: ELC0090
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The Rein ELC0090 is a critical component for BMW N52-series engines, replacing the often-ignored "angle connector" located beneath the intake manifold.
Water Pump Service Kit
Water Pump Service Kit
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Rein - Corporate Logo
T#:57616362
Part#: 1151758692550
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This CRP/Rein service kit offers an all-in-one overhaul solution designed to restore maximum cooling system integrity.
Vargas Water Pump Vent Hose - Black - BMW E9X M3
Vargas Water Pump Vent Hose - Black - BMW E9X M3
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T#:52164956
Part#: S65COPUBLK
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Prevent a roadside breakdown with the VTT Billet/Silicone S65 Water Pump Vent Hose, the ultimate maintenance upgrade for your BMW E9X M3.
Water Pump Service Kit
Water Pump Service Kit
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Rein - Corporate Logo
T#:57616363
Part#: 115175869259
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Protect your high-performance driving machine from the devastating consequences of thermal overload with the Rein Water Pump Service Kit.
Vargas Lower Radiator Hose - Black - BMW E9X M3
Vargas Lower Radiator Hose - Black - BMW E9X M3
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Vargas Turbo Technologies - Corporate Logo
T#:52164955
Part#: S65COLLOWBLK
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Designed for the S65 V8 engine, the VTT Lower Radiator Hose upgrade addresses the common maintenance headaches associated with aging BMW cooling systems.
Vargas Upgraded Silicone Coolant Hose Kit - Black - BMW N54
Vargas Upgraded Silicone Coolant Hose Kit - Black - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:52129740
Part#: N54COOLFBO
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The VTT N54 Full Coolant Hose Kit replaces your entire aging coolant hose network with high-performance silicone alternatives.
Vargas Upgraded Silicone Cylinder Head Outlet Adapter - Black - BMW N54
Vargas Upgraded Silicone Cylinder Head Outlet Adapter - Black - BMW N...
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Vargas Turbo Technologies - Corporate Logo
T#:52129739
Part#: VTTN54CLADOEM
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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 Upper Vent Hose - Black - BMW N54 E8X/E9X
Vargas Upgraded Silicone Upper Vent Hose - Black - BMW N54 E8X/E9X ...
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Vargas Turbo Technologies - Corporate Logo
T#:52164880
Part#: N54CLVTBLKO
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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 Billet Cylinder Head Outlet Adapter - Black - BMW N54/N55
Vargas Billet Cylinder Head Outlet Adapter - Black - BMW N54/N55 ...
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Vargas Turbo Technologies - Corporate Logo
T#:51918879
Part#: VTT-COOLADBLK
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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.
Water Hose
Water Hose
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Rein - Corporate Logo
T#:57616352
Part#: 17127599452
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Rein Automotive cooling hoses are designed as precision OEM-quality replacements that withstand the rigorous demands of hard driving.
Water Pump Service Kit
Water Pump Service Kit
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T#:57616365
Part#: 115175869253
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Engineered to deliver factory-level reliability, the Rein Electric Water Pump Service Kit is an essential maintenance upgrade for your BMW.
Radiator Lower Support & Bushing Kit
Radiator Lower Support & Bushing Kit
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T#:55317651
Part#: 171178RLSKT
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Keep your cooling system locked down on the street and the track with the Turner Motorsports Radiator Lower Support & Bushing Kit.
Vargas Coolant Hose Upgrade Kit - Black - BMW E9X M3
Vargas Coolant Hose Upgrade Kit - Black - BMW E9X M3
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T#:52164951
Part#: S65COOLFULLBLK
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Upgrade your BMW E9X M3’s engine bay and cooling reliability simultaneously with the Vargas Turbo Technologies S65 Billet/Silicone Full Hose Kit.
Vargas Upgraded Silicone Upper Radiator Hose - Black - BMW N54 E8X/E9X
Vargas Upgraded Silicone Upper Radiator Hose - Black - BMW N54 E8X/E9...
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Vargas Turbo Technologies - Corporate Logo
T#:52164878
Part#: N54CLRADUBLKO
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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.
Water Pump Service Kit
Water Pump Service Kit
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Rein - Corporate Logo
T#:57616366
Part#: 115175869251
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Refresh your cooling setup with full confidence and protect your investment against heat-induced power loss.
Vargas Billet Cylinder Head Outlet Adapter - Blue - BMW N54/N55
Vargas Billet Cylinder Head Outlet Adapter - Blue - BMW N54/N55 ...
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Vargas Turbo Technologies - Corporate Logo
T#:51918881
Part#: VTT-COOLADBLUE
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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
Vargas Upgraded Silicone Cylinder Head Outlet Hose - Black - BMW N54 ...
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T#:52129741
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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 Upgraded Silicone Radiator Hose Kit - Black - BMW N54
Vargas Upgraded Silicone Radiator Hose Kit - Black - BMW N54 ...
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T#:52129743
Part#: N54COOLRADBLKO
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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 Cylinder Head Outlet Coolant Adapter - BMW N54
Vargas Cylinder Head Outlet Coolant Adapter - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:51813338
Part#: VTT-N54-CAO
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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 Rear Coolant Plug - BMW N54
Vargas Rear Coolant Plug - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:51778143
Part#: VTT-N54-RCP
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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 Upgraded Silicone Lower Radiator Coolant Hose - Black - BMW N54
Vargas Upgraded Silicone Lower Radiator Coolant Hose - Black - BMW N5...
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Vargas Turbo Technologies - Corporate Logo
T#:52129742
Part#: VTTN54CLOWBLKO
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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 Billet Upper Coolant Line Block-Off - BMW N55 & S55 Engines
Vargas Billet Upper Coolant Line Block-Off - BMW N55 & S55 Engines ...
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Vargas Turbo Technologies - Corporate Logo
T#:52094575
Part#: VTT-FAB-047
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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 Heater Return Pipe Hose Upgrade - Black - BMW E9X M3
Vargas Heater Return Pipe Hose Upgrade - Black - BMW E9X M3
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Vargas Turbo Technologies - Corporate Logo
T#:52164954
Part#: S65COOLHEATBLK
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Upgrade your BMW M3’s engine bay while simultaneously reinforcing your cooling system with the VTT Billet/Silicone Heater Return Pipe Hose.
Vargas Upper Vent Hose - Black - BMW E9X M3
Vargas Upper Vent Hose - Black - BMW E9X M3
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Vargas Turbo Technologies - Corporate Logo
T#:52164960
Part#: S65COUVHBLK
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This VTT kit provides a permanent fix by utilizing heavy-duty silicone and anodized billet aluminum ends.
Vargas Upper Radiator Hose - Black - BMW E9X M3
Vargas Upper Radiator Hose - Black - BMW E9X M3
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T#:52164959
Part#: S65COUPRABLK
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$ 179.99

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09-03-2026

$ 152.99 USD
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The VTT Billet/Silicone Upper Radiator Hose is the only solution on the market that addresses both the hose material and the connector integrity simultaneously.
Vargas Radiator Hose Kit - Black - BMW E9X M3
Vargas Radiator Hose Kit - Black - BMW E9X M3
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:52164958
Part#: S65RHKBLK
Back Ordered
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This product was last offered at the strikethrough price on
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$ 267.74 USD
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Sale - Save 15%
$ 314.99

This product was last offered at the strikethrough price on
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The VTT S65 Radiator Hose Kit is the premier cooling system upgrade for the BMW E9X M3.
Coolant Expansion Tank
Coolant Expansion Tank
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:54959296
Part#: 314 223 0004
Ships in 1 Business Day
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$ 75.99 USD
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$ 75.99 USD
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This Meyle original-quality expansion tank provides a durable, reliable solution to get your cooling system back to performing exactly as it should.
Coolant Outlet Hose
Coolant Outlet Hose
Burgaflex - Corporate Logo
T#:57725187
Part#: 11537541992
Ships on Sep 24, 2026
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$ 26.99 USD
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$ 26.99 USD
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The Burgaflex Coolant Outlet Hose delivers track-ready reliability for high-demand driving conditions.
ECS Silicone Coolant Outlet Hose (11537584549) - E9X E8X N55
ECS Silicone Coolant Outlet Hose (11537584549) - E9X E8X N55 ...
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:55497447
Part#: 060105LA01-02
In Stock
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$ 82.99 USD
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$ 82.99 USD
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Upgrading your cooling system or replacing old, brittle rubber hoses? Don't just replace them—upgrade them. This silicone coolant outlet hose from ECS Tuning delivers perfect OEM fitment with superior heat tolerance and a longer service life. Unlike standard rubber, which softens and degrades from constant heat cycles, high-grade silicone is built to last. Give your cooling system the reliability it deserves.

This hose connects the outlet on the thermostat housing to the front of the cylinder head. It replaces OEM BMW part number 11537584549.

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Coolant Expansion Tank - With Cap
Coolant Expansion Tank - With Cap
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:55497428
Part#: 17137640514
Ships on Nov 6, 2026
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$ 69.99 USD
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$ 69.99 USD
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New Water Pump - With O-Ring - Metal Impellar
New Water Pump - With O-Ring - Metal Impellar
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56074199
Part#: 11517838201
Ships on Nov 19, 2026
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$ 99.99 USD
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$ 99.99 USD
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Radiator Hose - Lower
Radiator Hose - Lower
For N52 engines only
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:53008808
Part#: 17127564478
In Stock
New Item
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This product was last offered at the strikethrough price on
05-03-2026

$ 30.39 USD
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Sale - Save 20%
$ 37.99

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

$ 30.39 USD
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Coolant Expansion Tank Cap
Coolant Expansion Tank Cap
Febi - Corporate Logo
T#:56001934
Part#: 46221
Special Order: No Guaranteed ETA
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$ 19.99 USD
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$ 19.99 USD
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This Febi Bilstein coolant expansion tank cap is designed to maintain the exact 1.4 bar pressure required to maximize your coolant's boiling point.
Coolant Hose With Quick Connects - Thermostat To Radiator
Coolant Hose With Quick Connects - Thermostat To Radiator
Febi - Corporate Logo
T#:56471619
Part#: 17117524710
Special Order: No Guaranteed ETA
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$ 17.99 USD
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$ 17.99 USD
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This Febi Bilstein thermostat-to-radiator coolant hose provides the exact fit and durability required to keep your BMW’s operating temperatures strictly regulated.
Electromagnetic Water Pump With Bolts
Electromagnetic Water Pump With Bolts
Febi - Corporate Logo
T#:56291026
Part#: 178011
Special Order: No Guaranteed ETA
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$ 879.99 USD
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$ 879.99 USD
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Restore the cooling precision of your BMW with this OEM-spec Febi Bilstein replacement electric water pump.
Upper Radiator Coolant Hose
Upper Radiator Coolant Hose
Febi - Corporate Logo
T#:56218581
Part#: 11537516414
Special Order: No Guaranteed ETA
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$ 6.99 USD
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$ 6.99 USD
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This Febi Bilstein upper radiator hose is designed to restore factory-level cooling efficiency with precision tolerances.
Bolt For Water Pump
Bolt For Water Pump
Febi - Corporate Logo
T#:56724732
Part#: 11517602123
Special Order: No Guaranteed ETA
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$ 2.99 USD
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$ 2.99 USD
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This Febi Bilstein water pump screw offers superior durability designed to maintain consistent clamping pressure under high thermal loads.
Water Pump - Mechanical W/ Metal Impeller
Water Pump - Mechanical W/ Metal Impeller
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:56869518
Part#: 11517801063
Ships on Dec 14, 2026
New Item
$ 89.99 USD
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$ 89.99 USD
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Coolant Thermostat
Coolant Thermostat
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55461389
Part#: 11537549476
Ships on Sep 22, 2026
New Item
$ 81.99 USD
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$ 81.99 USD
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This Meyle coolant thermostat provides a refresh for your thermal management system, keeping your engine operating exactly where the engineers intended.
Electric Water Pump
Electric Water Pump
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:54959290
Part#: 313 220 0017
Back Ordered
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$ 326.99 USD
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$ 326.99 USD
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Whether you are daily driving or doing a preventative cooling overhaul, this high-quality replacement pump includes fresh mounting hardware to ensure your BMW's cooling system remains reliable.
Radiator Mount
Radiator Mount
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:56977984
Part#: 17117514402
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$ 6.99 USD
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$ 6.99 USD
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Maintain cooling system stability under spirited street driving and hard track use with this URO Parts replacement upper radiator mount bracket.

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