BMW Cooling System Parts & Accessories for BMW 3 Series E93 (2007-2013)

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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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Upper Radiator Hose - E9x E82 E89 With N52 Engine
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T#:7460
Part#: 17127531579
In Stock
$ 44.99 USD
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This is the upper radiator hose that goes from the engine to the top of the radiator with either N51 or N52 enigne.

This item fits the following BMWs:
2008+ E82 BMW 128i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i Convertible
2009+ Z4 BMW Z4 sDrive30i
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Rein Upper Radiator Hose - E82, E88, E90, E92, E93, Z4
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T#:340690
Part#: 17127540127
In Stock
$ 40.99 USD
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The hose that comes off of the top outlet on the radiator
Radiator Hose for N52 / N54 - Lower
For N52 engines only
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T#:388683
Part#: 17127564478
In Stock
$ 33.99 USD
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$ 33.99 USD
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Replace split, hard, or bulging hoses

Rein Water Pipe - E82, E88, E90, E91, E92, E93
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T#:403979
Part#: 11537545890
In Stock
$ 20.99 USD
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Connects from the top of the thermostat housing to the engine block

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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OEM Rein Upper Radiator Hose - E9X M3
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T#:402115
Part#: 11537838214
In Stock
$ 31.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

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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OEM Rein Lower Radiator Hose - E9X M3
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T#:387713
Part#: 11537840661
In Stock
$ 49.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

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.

OEM Rein Expansion Tank Vent Hose - E82/8 E9X N52
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T#:402113
Part#: 17127618510
In Stock
$ 32.99 USD
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Acts as a vent hose between the upper radiator hose and the expansion tank. Runs the length of the top of the radiator.
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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BMW E9X Z4 E8X Coolant Expansion Tank
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T#:402142
Part#: 17137640514
In Stock
$ 70.99

This product was last offered at the strikethrough price on
06-22-2026

$ 70.35 USD
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$ 70.35 USD
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Includes level sensor


CRP Radiator Vent Hose - E82, E84, E88, E90, E92, E93
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T#:1195859
Part#: 17127565094
In Stock
$ 34.99 USD
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$ 34.99 USD
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Located on the top of the radiator
Rein Radiator Hose with Temerature Sensor Fitting - E82 E88 E90 E91 E...
Lower
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T#:583051
Part#: 17127531581
In Stock
$ 27.99 USD
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$ 27.99 USD
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Radiator to Thermostat Housing
Coolant Expansion Tank
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T#:592020
Part#: 17137640515
In Stock
$ 97.99 USD
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$ 97.99 USD
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Includes level sensor

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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Rein Coolant Hose - E82, E84, E88, E90, E92, E93
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T#:592013
Part#: 17127599450
In Stock
$ 58.99 USD
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$ 58.99 USD
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Connects your radiator to the thermostat
Rein Radiator Return Hose - E82, E88, E90, E91, E92, E93
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T#:20530
Part#: 64216951946
In Stock
$ 26.99

This product was last offered at the strikethrough price on
03-26-2026

$ 21.99 USD
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$ 21.99 USD
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HOSE F RADIATOR AND ENGINE R 64216951946 Manufactured by CRP


Rein Lower Radiator Hose - E82, E88, E90, E92, E93
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T#:340665
Part#: 17127564480
In Stock
$ 50.99 USD
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The hose that attaches to the bottom of the radiator
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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OEM Rein Coolant Hose - BMW E82/88 E9X N54 N55 3.0L
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T#:592007
Part#: 17127548203
In Stock
$ 26.99 USD
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Low temperature cooling module hose.

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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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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Rein Water Hose With Gasket - Water Pump To Engine Inlet
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T#:17804808
Part#: 11537584630R
Back Ordered
$ 40.99 USD
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Rein OE quality water hoses are designed to be direct replacements for OE hoses and assemblies. This includes the hose and clamps.


OEM Rein Low Temperature Cooling Module Coolant Hose - BMW E82/88 E9X...
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T#:17738369
Part#: 17127540020
In Stock at Vendor
$ 40.83 USD
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Coolant hoses can become brittle over time, leading to cracks and leaks. Replace your coolant hose with this OEM Rein hose to prevent leaks and overheating.
Rein Lower Cooling Hose - E82, E88, E90, E91, E92, E93, Z4
For vehicles with automatic transmission only
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T#:402117
Part#: 17117524710
In Stock
$ 32.99 USD
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$ 32.99 USD
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Connects to lower coolant pipe
Coolant Hose
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T#:594291
Part#: 11537584549
In Stock
$ 31.99 USD
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Connects to the thermostat. Replacement from Rein.

Rein Coolant Outlet Hose - E82, E88, E90, E92, E93, Z4
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T#:388670
Part#: 11537541992
In Stock
$ 40.99

This product was last offered at the strikethrough price on
03-29-2026

$ 29.99 USD
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$ 29.99 USD
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Attached to the outlet on the thermostat housing

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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Rein Coolant Inlet Hose Section - E82, E83, E88, E90, E91, E92, E93 ...
For vehicles with manual transmission
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T#:388668
Part#: 11537535829
In Stock at Vendor
$ 30.99

This product was last offered at the strikethrough price on
01-27-2026

$ 20.99 USD
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$ 20.99 USD
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Replaces the rubber section of the water pump inlet pipe - includes two clamps

VTT Billet Coolant Reservoir Cap - Anodized Black - Most BMWs 2006+ (...
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T#:7530033
Part#: COOLANTCAPBLK
Back Ordered
$ 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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Aluminum Screws for N52 N54 Water Pump
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T#:2253
Part#: 11510392553
In Stock
$ 7.13 USD
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These aluminum water pump screws are single use and must be replaced each time they are removed. These are used on all 325i, 328i, and 330i with the BMW N51 N52 and N53 engines. They were also used on some early N54 engines that have rubber mounts on the water pump housing. Do not use these bolts if your N54 water pump has been replaced with a housing that does not have the rubber mounts.

In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i
2007+ E9X BMW 325i 325xi 328i 328xi 330i 335i 335xi
2006+ E60 BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi
2006+ X3 BMW X3 3.0i X3 3.0si
2006+ Z4 BMW Z4 3.0i Z4 3.0si
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Rein Coolant Hose - E60, E61, E70, E82, E83, E88, E90, E91, E92, E93,...
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T#:348982
Part#: 11537521049
In Stock
$ 17.99 USD
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Connects from the water pump to the thermostat

Coolant Inlet Hose Section
For vehicles with automatic transmission only
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T#:388669
Part#: 11537558523
Ships on Jul 28, 2026
$ 17.99

This product was last offered at the strikethrough price on
07-10-2026

$ 15.99 USD
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$ 15.99 USD
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Rein Expansion Tank Cap
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T#:384807
Part#: 17117639021
In Stock
$ 16.99 USD
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Cap for plastic expansion tank
Rein Coolant Outlet Hose W/ Upgraded Aluminum Flange - BMW E82/88 E9X...
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T#:44835448
Part#: CHU0484
In Stock at Vendor
$ 45.82 USD
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Attaches the outlet of the thermostat housing to the cylinder head This hose is notorious for failure at the flange. The plastic flange becomes brittle over time due to numerous heat cycles and often cracks, leading to a major coolant leak. This upgraded option from Rein features an aluminum flange that will not crack or split, ensuring years of operation without the worries of failure.
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OEM Rein Coolant Pipe Inlet Hose Section - N52
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T#:388662
Part#: 11537516414
In Stock at Vendor
$ 19.99

This product was last offered at the strikethrough price on
06-29-2026

$ 19.47 USD
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$ 19.47 USD
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Cooling hoses tend to crack over time after going through countless heating and cooling cycles. This can lead to leaks or air bubbles in the cooling system that lead too coolant loos, hurts cooling potential, or could possibly cause damage from excess heat.

Fits the following BMWs:
Submodels with N52 3.0L engine.

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Water Pump
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Rein - Corporate Logo
T#:46478542
Part#: WPR0046
Ships in 3 Business Days
$ 795.99 USD
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Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point 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 many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553
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OEM Rein Water Pump W/ Installation Kit - BMW E82/88 E9X N52 3.0L ...
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T#:45997535
Part#: WPS0502
In Stock at Vendor
$ 811.99 USD
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Rein Electric Water Pump Replacement Kits offer a valuable solution to failure-prone cooling-related components on the N52 BMW engine platforms. At the heart of these kits are OEM electric water pumps, which are complemented by Rein's problem solver hoses.
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Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55
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T#:53750144
Part#: CHU0629
Ships in 3 Business Days
New Item
$ 56.99 USD
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Upgraded Coolant Hose from Rein Featuring Metal Flanges to Reduce Leaks

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
Ships in 10 Business Days
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 Water Pump Vent Hose - Black - BMW E9X M3
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T#:52164956
Part#: S65COPUBLK
Ships in 10 Business Days
New Item
$ 104.99 USD
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$ 104.99 USD
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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.

Vargas Upgraded Silicone Cylinder Head Outlet Hose - Black - BMW N54 ...
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T#:52129741
Part#: N54COOLHBO
Ships in 10 Business Days
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 Rear Coolant Plug - BMW N54
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Vargas Turbo Technologies - Corporate Logo
T#:51778143
Part#: VTT-N54-RCP
Ships in 10 Business Days
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 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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$ 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 Billet Cylinder Head Outlet Adapter - Black - BMW N54/N55 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:51918879
Part#: VTT-COOLADBLK
Ships in 10 Business Days
New Item
$ 31.99 USD
Free Shipping
$ 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 Upgraded Silicone Lower Radiator Coolant Hose - Black - BMW N5...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:52129742
Part#: VTTN54CLOWBLKO
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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 Coolant Hose Upgrade Kit - Black - BMW E9X M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:52164951
Part#: S65COOLFULLBLK
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$ 524.99 USD
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$ 524.99 USD
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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 Lower Radiator Hose - Black - BMW E9X M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:52164955
Part#: S65COLLOWBLK
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$ 179.99 USD
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$ 179.99 USD
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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 Heater Return Pipe Hose Upgrade - Black - BMW E9X M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:52164954
Part#: S65COOLHEATBLK
Ships in 10 Business Days
New Item
$ 127.99 USD
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$ 127.99 USD
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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.