BMW Cooling System Parts & Accessories

N54 Billet 90 Degree Coolant Tank Fitting

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T#:12184492

Part#: VTT-COOLANT-90-1

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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 Red - Most BMWs 2006+ (E/...

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T#:7530034

Part#: COOLANTCAPRED

Ships in 2 Business Days

$ 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 Billet Coolant Reservoir Cap - Anodized Blue - Most BMWs 2006+ (E...

2X Entries Into Our F80 M3 Sweepstakes

T#:7530036

Part#: COOLANTCAPBLUE

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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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T#:26404815

Part#: VTT-N54-COOLANT9

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$ 31.99 USD

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BMW E9X Z4 E8X Coolant Expansion Tank

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T#:402142

Part#: 17137640514

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

$ 66.83 USD

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Includes level sensor

VTT Compete N54 Coolant Hose Kit - E8X, E9X N54

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T#:590227

Part#: VTT-N54-COOLANT-

Ships in 8 Business Days

$ 469.99 USD

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A complete upgrade to the weak factory hoses.

Rein Coolant Hose - E82, E84, E88, E90, E92, E93

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T#:592013

Part#: 17127599450

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08-31-2026

$ 56.04 USD

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Connects your radiator to the thermostat

Coolant Expansion Tank

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T#:592020

Part#: 17137640515

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08-31-2026

$ 93.09 USD

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Includes level sensor

Rein Coolant Expansion Tank - E46, E53, E83

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T#:402141

Part#: 17117573781

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08-31-2026

$ 72.57 USD

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Includes cap and level sensor

VTT Billet Coolant Reservoir Cap - Anodized Clear - Most BMWs 2006+ (...

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T#:7530035

Part#: COOLANTCAPRAW

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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 Coolant Return Pipe from Water Pump Hose to Transmission Cooler T...

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T#:6945

Part#: 11531711384

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08-31-2026

$ 65.54 USD

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This is the cooling system return hose that goes from the automatic transmission cooling thermostat to the hose that comes off the lower water pump outlet.1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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VTT B58 Billet/Silicone Coolant Hose Kit - Blue - B58 Gen1

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T#:27805179

Part#: B58-BSCHK-BLU

Ships on Sep 18, 2026

$ 556.99 USD

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Upgrade your cooling system with this kit, designed to address common issues with factory plastic cooling hose connectors and hoses. This kit features high-quality upgrades, including 6061-T6 billet aluminum connectors and 6-ply silicone hoses, ensuring durability and reliability.

Included in this comprehensive kit are:

Upper Radiator Hose (OEM Part 17128616548) Lower Radiator Hose (OEM Part 17128633482) Expansion Tank Hose (OEM Part 17128620944) Upper Vent Hose (OEM Part 17128616555)

Say goodbye to brittle plastic and dried-out hoses, and enjoy a more robust and long-lasting cooling system for your vehicle.

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VTT B58 Billet/Silicone Coolant Hose Kit - Black - B58 Gen1

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T#:27805174

Part#: B58-BSCHK-BLK

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$ 556.99 USD

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Upgrade your cooling system with this kit, designed to address common issues with factory plastic cooling hose connectors and hoses. This kit features high-quality upgrades, including 6061-T6 billet aluminum connectors and 6-ply silicone hoses, ensuring durability and reliability.

Included in this comprehensive kit are:

Upper Radiator Hose (OEM Part 17128616548) Lower Radiator Hose (OEM Part 17128633482) Expansion Tank Hose (OEM Part 17128620944) Upper Vent Hose (OEM Part 17128616555)

Say goodbye to brittle plastic and dried-out hoses, and enjoy a more robust and long-lasting cooling system for your vehicle.

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VTT Plug And Play Billet S58 Throttle Body Coolant Delete Kit ...

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T#:26971821

Part#: VTT-S58-TB-COOLA

Ships on Sep 18, 2026

$ 114.99 USD

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Heat is the enemy of power, and the last thing you want is hot coolant heating your charge air even further right before it enters the charge cooler, but this is what BMW has done on the S58. This is done for emissions and quick warm-up purposes. However, If you are looking to make power on the S58, and are upgrading your charge cooler, or adding PI. While you are there, it takes 30 seconds to remove the coolant lines from the TB connections and replace them with our billet coolant delete kit. This completely removes the coolant from the Throttle body and provides a bypass for the coolant. Simply remove the two lines going to the throttle body, and run our hose in their place. You leave the coolant fittings on the TB open and avoid any unwanted heat being introduced into your charge tract. In our opinion a must for full effort builds. We take the work out of it for you. Kit included: One Plug and Play TB Coolant Delete Hose Kit Features: Billet 6061 Anodized coolant fittings for long leak-free life Reinforced 7-ply silicone hose for strength and longevity Vibration-resistant crimp clamps 100% plug and play, NO cutting or removing factory clamps or hoses. Fully reversible

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Vargas Billet Water Neck - B58 Mk5 Supra/G29 Z4

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T#:7292067

Part#: VTT-A90G29-WN

Ships on Sep 18, 2026

$ 147.99 USD

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The Factory B58 TU water neck is plastic and is right in the path of your charge pipe if you lose a connection and it blows off. If this does happen to you it can break the plastic neck emptying your coolant in seconds causing you in the best-case scenario to be stranded, and in the worst-case scenario expensive engine damage. Add some cheap insurance with Vargas' Billet Water neck. Product Details: Plug and play direct factory replacement 6061-T6 Billet aluminum with black anodizing for a corrosion-free life Cheap insurance against a blown charge pipe which could turn into a blown motor

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BMW E39 Coolant Expansion Tank

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T#:388645

Part#: 17111436381

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$ 83.59 USD

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BMW E39 Coolant Expansion Tank is an essential component designed to maintain the proper coolant level in your vehicle's cooling system. Manufactured with high-quality materials, this expansion tank ensures reliable performance and durability, preventing engine overheating by accommodating the expansion of coolant as it heats up. The kit includes a level sensor and cap, providing everything needed for a seamless installation. This expansion tank is specifically engineered to meet the exact specifications of your BMW E39, offering a perfect fit and optimal functionality.

Complete Kit: Includes level sensor and cap for easy installation.
High-Quality Construction: Built with durable materials for long-lasting performance.
Prevents Overheating: Helps manage coolant expansion, ensuring engine protection.
Exact Fit: Designed to meet the precise specifications of your BMW E39.
Enhanced Reliability: Ensures proper coolant level maintenance for optimal cooling system function.

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Rein Coolant Hose - Supply Line - E60, E61

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T#:557219

Part#: 17127546064

Ships in 4 Business Days

Sale - Save 17% $ 54.85

This product was last offered at the strikethrough price on
05-13-2026

$ 45.59 USD

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Connects from water pump to top left of radiator

Rein Upper Radiator Hose - F06, F07, F10, F12, F13

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T#:568809

Part#: 17127580957

In Stock

$ 72.99

This product was last offered at the strikethrough price on
06-04-2026

$ 65.99 USD

Limited Qty Sale

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$ 65.99 USD

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From radiator to filter housing

OEM Rein Expansion Tank - F01,F06,F10,F12,F13

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T#:555024

Part#: 17137647283

Ships in 2 Business Days

Sale - Save 5% $ 118.99

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08-31-2026

$ 113.04 USD

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Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

his item fits the following BMW Chassis:
F01,F02,F06,F10,F12,F13

Fits BMW Engines including:
N54,N55,N57N

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Expansion Tank Mounting Plate

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T#:402140

Part#: 17111436250

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$ 67.44 USD

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Coolant Expansion Tank

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T#:591959

Part#: 17111741167

Ships in 2 Business Days

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$ 66.49 USD

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Plastic has a limited lifespan - replace every 80,000 miles

BMW Engine Water Hose 11531711877

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T#:6947

Part#: 11531711877

In Stock

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08-31-2026

$ 68.39 USD

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GENUINE BMW ENGINE WATER HOSE 11531711877.--

This item fits the following BMWs:
BMW 7 Series - 750iL

--.

Coolant Expansion Tank

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T#:388723

Part#: 17137823626

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$ 75.04 USD

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Mounts towards the front of the engine bay

Thermostat Housing W/ Thermostat Kit

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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:599063

Part#: 11538674895

In Stock

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08-31-2026

$ 104.49 USD

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Lower Radiator Hose To Thermostat Housing - Front

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T#:599049

Part#: 17122754223

Ships in 3 Business Days

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$ 83.59 USD

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Rein Upper Radiator Hose - E60, E63, E64

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T#:592004

Part#: 17127540665

Ships in 2 Business Days

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Connects water pump to radiator

Rein Coolant Expansion Tank - E70

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T#:592030

Part#: 17138621092

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$ 95.94 USD

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Replace your cracked or faded tank

Thermostat With Housing

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T#:582356

Part#: 11537509227

Ships in 4 Business Days

Sale - Save 5% $ 89.99

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$ 85.49 USD

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Stop leaks before they start with this new Thermostat With Housing from Rein.

Upper Radiator Hose

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T#:377397

Part#: 17127519248

Ships in 4 Business Days

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$ 95.94 USD

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Attaches to the water pump

OEM Rein Upper Radiator Hose - E53 X5 M62 4.4L 4.6L

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T#:379731

Part#: 11537500746

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$ 61.74 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

This item fits the following BMWs:
2000-2003 E53 BMW X5 4.4i 4.6is

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OEM Rein Throttle Body Return Hose - E34 525i

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T#:379743

Part#: 11531738054

Ships in 2 Business Days

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$ 58.89 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

OEM Rein Upper Radiator Hose - E53 X5 N62 4.4L 4.8L

2X Entries Into Our F80 M3 Sweepstakes

T#:362526

Part#: 17127526856

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$ 79.05 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following BMWs:
2003+ E53 BMW X5 N62 4.4L 4.8L

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Expansion Tank

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T#:592015

Part#: 17137501959

Ships in 3 Business Days

Sale - Save 5% $ 74.99

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08-31-2026

$ 71.24 USD

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Includes vent screw and leveling switch

Coolant Expansion Tank

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T#:591949

Part#: 17107514964

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$ 76.94 USD

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Includes bleeder screw

Coolant Hose

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T#:379793

Part#: 17127534918

In Stock at Vendor

Sale - Save 5% $ 90.99

This product was last offered at the strikethrough price on
08-31-2026

$ 86.44 USD

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From water pump to radiator

Rein Radiator Hose - Upper - E65, E66

2X Entries Into Our F80 M3 Sweepstakes

T#:379749

Part#: 17127535742

Ships in 4 Business Days

Sale - Save 5% $ 89.99

This product was last offered at the strikethrough price on
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$ 85.49 USD

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A common source of cooling system failure

Rein Radiator Hose - E70 X5

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T#:388766

Part#: 17127536230

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This product was last offered at the strikethrough price on
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$ 64.59 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

Rein Expansion Tank Mounting Plate - E83

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T#:402421

Part#: 17113400017

Ships in 4 Business Days

Sale - Save 5% $ 166.99

This product was last offered at the strikethrough price on
08-31-2026

$ 158.64 USD

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Secures the expansion tank to the radiator

Rein Radiator Hose - Upper - E32, E34

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T#:6960

Part#: 11531722682

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Sale - Save 5% $ 63.99

This product was last offered at the strikethrough price on
08-31-2026

$ 60.79 USD

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BMW ENGINE WATER HOSE 11531722682.--

This item fits the following BMWs:
BMW 5 Series -535i
BMW 7 Series - 735i, 735iL

--.

Radiator Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:594373

Part#: 17127619255

Ships in 4 Business Days

Sale - Save 5% $ 132.99

This product was last offered at the strikethrough price on
08-31-2026

$ 126.34 USD

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Replacement Radiator Hose from Rein

Rein Lower Radiator Hose - E53 X5 N62 4.4L 4.8L

2X Entries Into Our F80 M3 Sweepstakes

T#:362530

Part#: 17127509963

Ships in 4 Business Days

Sale - Save 19% $ 51.38

This product was last offered at the strikethrough price on
04-15-2026

$ 41.79 USD

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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following BMWs:
2003+ E53 BMW X5 N62 4.4L 4.8L

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OEM Rein Expansion Tank - E90 335d

2X Entries Into Our F80 M3 Sweepstakes

T#:555023

Part#: 17138570079

Ships in 4 Business Days

Sale - Save 5% $ 124.99

This product was last offered at the strikethrough price on
08-31-2026

$ 118.74 USD

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Sale - Save 5%

$ 124.99

This product was last offered at the strikethrough price on
08-31-2026

$ 118.74 USD

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Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

This item fits the following BMW Chassis:
E90

Fits BMW Engines including:
M57

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VTT N54 Both Raditors Hoses Only

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T#:590230

Part#: VTT-N54-COOLANT4

Ships on Sep 18, 2026

$ 439.99 USD

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$ 439.99 USD

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Vargas Billet Upper Coolant Line Block-Off - BMW N55 & S55 Engines ...

2X Entries Into Our F80 M3 Sweepstakes

T#:52094575

Part#: VTT-FAB-047

Ships on Sep 18, 2026

$ 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 Coolant Hose Kit - Red - BMW F2X, F3X

2X Entries Into Our F80 M3 Sweepstakes

T#:51848505

Part#: VTT-B58-CFHKRED

Back Ordered

$ 559.99 USD

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$ 559.99 USD

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Protect your investment with the VTT Full Coolant Hose Upgrade Kit, specifically engineered for the BMW B58 engine.

Radiator Hose - Radiator To Thermostat Housing

2X Entries Into Our F80 M3 Sweepstakes

T#:594377

Part#: 17127619256

Ships in 4 Business Days

Sale - Save 5% $ 99.99

This product was last offered at the strikethrough price on
08-31-2026

$ 94.99 USD

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Sale - Save 5%

$ 99.99

This product was last offered at the strikethrough price on
08-31-2026

$ 94.99 USD

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Replacement Radiator Hose - Radiator To Thermostat Housing from Rein

Expansion Tank

2X Entries Into Our F80 M3 Sweepstakes

T#:593074

Part#: 17137601948

Back Ordered

Sale - Save 5% $ 118.99

This product was last offered at the strikethrough price on
08-31-2026

$ 113.04 USD

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Qty

Sale - Save 5%

$ 118.99

This product was last offered at the strikethrough price on
08-31-2026

$ 113.04 USD

Add to Wish List

Cooling system expansion tank

VTT Billet Coolant Reservoir Cap - Anodized Black - Most BMWs 2006+ (...

2X Entries Into Our F80 M3 Sweepstakes

T#:7530033

Part#: COOLANTCAPBLK

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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