A-Premium Thermostat Housing Assembly for Audi & VW 2.0L — Black OE-fit with Gasket

The A-Premium Engine Coolant Thermostat Housing Assembly is a direct-replacement coolant outlet and thermostat housing designed to restore proper engine cooling flow on compatible Audi and Volkswagen 2.0L models.

When a cracked or leaking thermostat housing causes coolant loss, overheating risk, or poor heater performance, replacing it with a built-for-fit unit quickly returns the cooling system to reliable operation. This A-Premium assembly is molded from durable plastic, includes the necessary gasket, and matches OE mounting locations and outlet diameters for a seamless fit on many 2.0L L4 Audi and VW vehicles.

Which models and engines will this thermostat housing fit?

This assembly is built for a variety of Audi and Volkswagen 2.0L L4 engine applications across multiple years. Fitment covers common models including A3, A4, A5, A6, Q3, Q5, Q7, TT, Beetle, Golf, GTI, Jetta, Passat, CC, Eos and Tiguan in the years specified by manufacturer variations.

• Audi: A3 (2008–2013), A4/A4 allroad (2009–2016), A5 (2010–2017), A6 (2012–2015), Q3/Q5/Q7, TT variants
• Volkswagen: Beetle, Golf, GTI, Jetta, Passat, CC, Eos, Tiguan across listed years
• Fits 2.0L L4 engines including CBFA, CCTA, CBFA/CCTA and other turbocharged variants noted in fitment lists

What are the key specifications and included parts?

The A-Premium housing is a black plastic assembly designed to match OE outlet sizing and mounting points. It ships ready to install with a gasket and two mounting holes for secure attachment.

• Material: high-grade plastic for corrosion resistance
• Color: black; Outlet diameter: 1.51 inch (both ports specified)
• Mounting holes: 2; Gasket/seal included for leak-free installation
• Reference numbers: CH6001, 902-5866, 86001, CO34804, 06H121121K/L

How does installation affect cooling performance and maintenance?

Replacing a failing thermostat housing eliminates leak points and restores correct coolant routing, which helps maintain stable engine temperatures and heater operation. Install is typically straightforward for experienced DIYers or professional technicians who follow torque specs and bleed the cooling system afterward.

• Replace with gasket provided and tighten to manufacturer torque values
• Refill and bleed the cooling system to remove air pockets after installation
• Inspect hoses and clamps for wear while the housing is accessible

Why choose this A-Premium assembly over used or generic housings?

A-Premium supplies a purpose-made replacement that mirrors OE dimensions and outlet ports, reducing fitment hassles and the risk of premature failure. The one-year unlimited-mileage guarantee offers added assurance compared with unknown-condition used parts.

• Engineered to match OE mounting locations and port sizes
• Comes with a new gasket to help ensure a reliable seal
• One-year unlimited-mileage warranty for added confidence

Who is this for? If you own an Audi or Volkswagen 2.0L vehicle listed in the fitment tables and you’re experiencing coolant leaks, overheating, or heater shortcomings, this A-Premium Thermostat Housing Assembly is intended for owners and mechanics seeking a direct-fit, ready-to-install replacement. It’s a good choice for DIY installers comfortable with coolant-system service and for service shops that need a dependable aftermarket alternative to OE housings.