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This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
06-15-2026
This product was last offered at the strikethrough price on
06-15-2026
BMW N54 N55 S55 Mosselman Thermostat Installation Kit is designed to ensure a seamless installation of the Mosselman thermostat on BMW engines. This comprehensive kit from Turner Motorsport includes all necessary gaskets and components, guaranteeing a reliable and precise installation for optimal engine performance.
Upgrade your BMW's cooling system with the Mosselman Thermostat Installation Kit from Turner Motorsport, ensuring a top-quality, reliable setup for your engine.
This product was last offered at the strikethrough price on
03-31-2026
This product was last offered at the strikethrough price on
03-31-2026
This product was last offered at the strikethrough price on
04-01-2026
This product was last offered at the strikethrough price on
04-01-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
03-31-2026
This product was last offered at the strikethrough price on
03-31-2026
The water pumps in BMW N54 models are known for failure near 80,000 miles. This is a very common issue that often times leaves the owner stranded. This kit provides a single stop for the water pump and thermostat replacement to save the search and get you back on the road.
Included in this kit:
Thermostat
Water pump
Genuine BMW coolant
Mounting hardware required for both the thermostat and water pump
This product was last offered at the strikethrough price on
09-14-2026
Our water pump/thermostat overhaul includes:
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This packages covers the major components you would install along with a new water pump or thermostat. On the N54 cars (135i, 335i, 535i) the water pump and theremostat are mounted together. In fact, to get to the thermostat, BMW expects you to remove the water pump. This package covers the whole job. With the electric water pump now an integral part of the efficiency and performance of the engine, staying on top of its maintenance and replacement is the smart thing to do.
Our water pump/thermostat overhaul includes:
This product was last offered at the strikethrough price on
09-09-2026
This product was last offered at the strikethrough price on
09-09-2026
Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.
To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.
See kit contents below for all included components.
This product was last offered at the strikethrough price on
09-14-2026
This product was last offered at the strikethrough price on
09-14-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
The N54 engine, like many BMW engines, has a reputation for encountering cooling system issues. To address this, Turner Motorsport enthusiasts have curated a comprehensive kit to safeguard your N54 cooling system against potential failures.
Included in the kit:
1. Turner Motorsport Heavy Duty Aluminum Expansion Tank Kit:
Enhances the factory plastic tank design, known for its vulnerability to failure. Maintains original coolant capacity and expansion volume. Features a baffled tank design to prevent air pockets during aggressive driving. Includes a specially designed bleed passage to avoid air introduction during engine cooldown. Constructed with fully-TIG welded 5052 aluminum. Comes with aluminum bleeder screw, OE coolant level sensor, expansion tank cap, flared coolant pressure release line, and all necessary installation hardware. 2. ECS Performance Coolant Outlet Hose Kit:
4-ply reinforced silicone outlet hose. Internal layer lined with Flourosilicone for exceptional chemical resistance. Equipped with billet 6061-T6 outlet adapter. 3. Redline Water-Wetter Coolant Additive - 12 oz:
Lowers coolant temperatures by up to 30*F. Compatible with various cooling system components including aluminum, cast iron, copper, brass, and bronze. For N54 owners seeking enhanced cooling system performance and longevity, especially those pushing significant power, this kit is indispensable.
Just like the rest of your vehicle's major systems, the cooling system must also be addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself can degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.
To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.
See kit contents below for all included components.