BMW Coolant & Radiator Hoses for BMW Z Series E85/6 (2003-2008)

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We offer replacement hoses from several OE brands that we trust, along with performance silicone upgrades for those who want increased wear resistance compared to factory rubber.
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Genuine BMW - Corporate Logo
T#:360688
Part#: 11537502525
In Stock
Sale - Save 3% $ 82.99
$ 80.50 USD
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Sale - Save 3% $ 82.99
$ 80.50 USD
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Replace your cracked/broken coolant pipe with this Genuine BMW pipe to ensure long term reliability and perfect fitment.
ECS Performance Coolant Outlet Hose Kit - E82/88 E9X Z4 N52
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:599848
Part#: 004481LA01
In Stock
Sale - Save 10% $ 107.99
$ 97.19 USD
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Sale - Save 10% $ 107.99
$ 97.19 USD
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The perfect upgrade for your connection between your thermostat and cylinder head. Designed using durable silicone and billet aluminum to greatly outlast the OE rubber and plastic combination. Some of the weakest points of the cooling systems in BMW's can come down to the OE plastic fittings breaking down from the constant changes in temperature, softening these plastic 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 re-installation. Constructed of 4-Ply reinforced silicone for improved durability over the failure-prone OE rubber hose. Flourosilicone 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: 11537545890
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Genuine BMW - Corporate Logo
T#:46159
Part#: 17127514406
Ships Jul 1, 2025
2% off MSRP $ 86.99
$ 84.99 USD
Free Shipping
2% off MSRP $ 86.99
$ 84.99 USD
Free Shipping


Genuine BMW Water Hose -
This item fits the following BMW Chassis:
E85

Fits BMW Engines including:
M54


Genuine BMW Radiator Hose - Lower - Z4 2.5i 3.0i M54
For roadster models with production date up to 04/2004
Genuine BMW - Corporate Logo
T#:22531
Part#: 17127514405
Ships Jul 1, 2025
3% off MSRP $ 99.99
$ 96.99 USD
Free Shipping
3% off MSRP $ 99.99
$ 96.99 USD
Free Shipping


Genuine BMW Water Hose -
This item fits the following BMW Chassis:
E85

Fits BMW Engines including:
M54


Genuine BMW - Corporate Logo
T#:19519
Part#: 17127514404
Ships Jul 1, 2025
3% off MSRP $ 99.99
$ 96.99 USD
Free Shipping
3% off MSRP $ 99.99
$ 96.99 USD
Free Shipping


Genuine BMW Water Hose -
This item fits the following BMW Chassis:
E85

Fits BMW Engines including:
M54

ECS Silicone Radiator Hoses - N52
For Vehicles With Engine Code N52B30 (Non-SULEV w/o Auxiliary Heating)
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:37723492
Part#: 008641LA03
Ships on Aug 18, 2025
New Item
$ 124.99 USD
Free Shipping
$ 124.99 USD
Free Shipping

Tired of dealing with brittle, dry-rotted rubber hoses? Whether you're refreshing your cooling system or replacing aging components, this ECS Silicone Radiator Coolant Hose Set is the ultimate upgrade. Designed for durability, performance, and a factory-perfect fit, these premium silicone hoses outperform standard rubber in every way.

Why Choose Silicone Over Rubber?

Made from heavy-duty, reinforced 4-ply fluorosilicone, ECS hoses withstand extreme temperatures and pressures far beyond OEM rubber hoses. Engineered to resist oil, fuel, and electrochemical degradation, these hoses are tested for continuous operation at 250°F and over 45 psi, delivering superior reliability, reduced turbulence, and improved coolant flow.

Key Benefits:

Direct OE Fitment – Perfectly molded to factory specifications for seamless installation. Enhanced Durability – Heat-resistant silicone prevents cracking, swelling, and deterioration over time. Superior Cooling Performance – Smoother internal passageways improve coolant flow and system efficiency. Pre-Installed Quick-Connect Fittings – Hassle-free installation with OEM-style connectors. Premium Hardware Included – Comes with German-style stainless steel worm-drive hose clamps for a secure fit. Kit Includes:

Upper Radiator Hose Lower Radiator Hose Pre-Installed Factory "Quick-Connect" Flanges (4) Stainless Steel Worm-Drive Hose Clamps (4) Replaces OEM Part Numbers: 17127531579 & 17127564478

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Genuine BMW - Corporate Logo
T#:22325
Part#: 11537516414
Ships in 1-2 days
6% off MSRP $ 168.99
$ 158.99 USD
Free Shipping
6% off MSRP $ 168.99
$ 158.99 USD
Free Shipping
This is the Genuine BMW coolant pump inlet pipe for cars with the N52 6 cylinder engine.

This item fits the following BMWs:
2008+ E82 BMW 128i - Only for Auto Trans
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan - Only for Auto Trans
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon - Only for Auto Trans
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe - Only for Auto Trans
2007-2013 E93 BMW 328i - Convertible - Only for Auto Trans
2006-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive
2006-2010 E83 BMW X3 3.0i X3 3.0si - Only for Auto Trans
2006-2008 E85 BMW Z4 3.0i Z4 3.0si
2009+ Z4 BMW Z4 sDrive30i
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Genuine BMW - Corporate Logo
T#:15130
Part#: 17127537717
Ships Jul 1, 2025
2% off MSRP $ 86.99
$ 84.99 USD
Free Shipping
2% off MSRP $ 86.99
$ 84.99 USD
Free Shipping

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

Genuine BMW radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMW Chassis:
E85,E86

Fits BMW Engines including:
N52

 

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Genuine BMW - Corporate Logo
T#:36149
Part#: 11537830710
Ships Jul 1, 2025
4% off MSRP $ 74.99
$ 71.99 USD
Free Shipping
4% off MSRP $ 74.99
$ 71.99 USD
Free Shipping


Genuine BMW Pipe
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4

Fits BMW Engines including:
S54


Genuine BMW - Corporate Logo
T#:19533
Part#: 17127545263
Ships Jul 1, 2025
2% off MSRP $ 86.99
$ 84.99 USD
Free Shipping
2% off MSRP $ 86.99
$ 84.99 USD
Free Shipping

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

Genuine BMW radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMW Chassis:
E85,E86

Fits BMW Engines including:
N52

 

Show More Show Less
Genuine BMW - Corporate Logo
T#:348480
Part#: 11537545890
Ships Jul 1, 2025
Sale - Save 4% $ 87.99
$ 84.73 USD
Free Shipping
Sale - Save 4% $ 87.99
$ 84.73 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:13015
Part#: 11537836598
Ships Jul 1, 2025
$ 68.99 USD
Free Shipping
$ 68.99 USD
Free Shipping

Genuine BMW radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

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

This item fits the following BMW Chassis:
E85 Z4M,E85 Z4,E86 Z4

Fits BMW Engines including:
S54

Show More Show Less


Genuine BMW - Corporate Logo
T#:46233
Part#: 17127545277
Ships Jul 1, 2025
3% off MSRP $ 99.99
$ 96.99 USD
Free Shipping
3% off MSRP $ 99.99
$ 96.99 USD
Free Shipping

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

Genuine BMW radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMW Chassis:
E85,E86

Fits BMW Engines including:
N52
 

 

Show More Show Less
Genuine BMW Radiator Hose - Lower - Z4 2.5i 3.0i M54
For roadster models with production date from 04/2004
Genuine BMW - Corporate Logo
T#:19531
Part#: 17127535591
Ships Jul 1, 2025
Sale - Save 3% $ 105.99
$ 102.80 USD
Free Shipping
Sale - Save 3% $ 105.99
$ 102.80 USD
Free Shipping


Genuine BMW Water Hose -
This item fits the following BMW Chassis:
E85

Fits BMW Engines including:
M54

ECS Silicone Radiator Hoses - N52
For SULEV Vehicles with Engine Code N51B30 & Auxiliary Heating (S536A)
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:32516370
Part#: 008641LA02
Ships on Aug 18, 2025
Sale - Save 10% $ 124.99
$ 112.49 USD
Free Shipping
Sale - Save 10% $ 124.99
$ 112.49 USD
Free Shipping

Tired of dealing with brittle, dry-rotted rubber hoses? Whether you're refreshing your cooling system or replacing aging components, this ECS Silicone Radiator Coolant Hose Set is the ultimate upgrade. Designed for durability, performance, and a factory-perfect fit, these premium silicone hoses outperform standard rubber in every way.

Why Choose Silicone Over Rubber?

Made from heavy-duty, reinforced 4-ply fluorosilicone, ECS hoses withstand extreme temperatures and pressures far beyond OEM rubber hoses. Engineered to resist oil, fuel, and electrochemical degradation, these hoses are tested for continuous operation at 250°F and over 45 psi, delivering superior reliability, reduced turbulence, and improved coolant flow.

Key Benefits:

Direct OE Fitment – Perfectly molded to factory specifications for seamless installation. Enhanced Durability – Heat-resistant silicone prevents cracking, swelling, and deterioration over time. Superior Cooling Performance – Smoother internal passageways improve coolant flow and system efficiency. Pre-Installed Quick-Connect Fittings – Hassle-free installation with OEM-style connectors. Premium Hardware Included – Comes with German-style stainless steel worm-drive hose clamps for a secure fit. Kit Includes:

Upper Radiator Hose Lower Radiator Hose Pre-Installed Factory "Quick-Connect" Flanges (4) Stainless Steel Worm-Drive Hose Clamps (4) Replaces OEM Part Numbers: 17127531579 & 17127564478

Show More Show Less

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