BMW Coolant & Radiator Hoses

The Genuine BMW Turbocharger to Auxiliary Water Pump Hose available at Turner Motorsport is a high-quality, OEM replacement designed for seamless performance in high-torque engines. Crafted from durable, heat-resistant materials, this hose ensures an efficient connection between the turbocharger and auxiliary water pump, optimizing coolant flow and prolonging engine life. Ideal for BMW models requiring dependable cooling performance, this hose meets all OEM specifications for fit and durability, providing reliable operation even under extreme conditions.

Key features:

OEM-grade, heat-resistant construction for extended durability Optimized for efficient coolant flow, reducing engine strain Direct fitment with original BMW specifications Compatible with select BMW turbocharged engine Replace your worn-out or damaged hose to maintain peak performance and cooling efficiency. The Genuine BMW Turbocharger to Auxiliary Water Pump Hose is the perfect choice for BMW owners who demand only the best in automotive performance.

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

Both thermostat housing hoses to replace your worn out rubber and brittle plastic connections.

Over the years and with exposure to extremely hot coolant, the coolant hoses in your vehicle can take a beating. Being made of reinforced rubber, these hoses can fail in a number of ways. Splitting at a hose clamp, swelling, cracking, and breaking are just a few of the ways this hose can leave you stranded. Replace it at the first sign of wear to keep your coolant in your engine.

Comes with both upper and lower thermostat hoses: 11537830715 Lower + 11537830716 Upper

OEM Replacement Upper Radiator Hose for E46 3 series (Not M3).

This lower radiator hose fits the following BMWs: 
1999-2000 E46 3 Series Sedan/Wagon - 323i & 328i 
1999-2000 E46 3 Series Coupe/Conbertible - 323Ci & 328Ci 
2001-2005 E46 3 Series Sedan/Wagon - 325i, 325xi, 330i, 330xi 
2001-2006 E46 3 Series Coupe/Convertible - 325Ci, 330Ci 

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 on your S65-equipped E9X M3. 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: 11537838214 & 11537840661.

Rein's durable and flexible construction of their radiator hoses helps prevent leaks, keeps engine temperatures stable, and extends engine life.

• Superior Heat and Pressure Resistance: Built to endure extreme engine conditions, minimizing the risk of overheating.
• OEM Fitment: Designed to meet or exceed the original specifications for European vehicles, ensuring a precise fit.
• Long-lasting Durability: Made from premium rubber, reinforced for longevity and optimal performance.
• Leak Prevention: Provides a tight, leak-proof connection, ensuring no coolant loss.
• Easy Installation: Perfect for quick replacement, compatible with a variety of makes and models.

Get the Rein - Radiator Hose from Turner Motorsport, where quality parts meet precision engineering.