WEHRLI WCF100155 1999-2023 GM BILLET COOLANT HEATER CORE FIREWALL FITTING

The WEHRLI WCF100155 1999-2023 GM Billet Coolant Heater Core Firewall Fitting is a durable and reliable solution to the common issue of the factory plastic GM Coolant Heater Core Firewall Fitting failing on Duramax trucks and various GM vehicles. Made in the USA from high-quality billet aluminum, this direct-fit replacement provides increased resistance to both heat and vibration, ensuring a longer-lasting and more secure coolant system.

Designed to prevent leaks and offer easy installation, this billet coolant heater core firewall fitting is a superior alternative to the factory part, which is known to be prone to failure. With a 5/8" barb connection and a double O-ring seal, the WEHRLI fitting provides a tight and secure fit for a variety of GM models, including Duramax trucks, Chevrolet Silverado, Suburban, Tahoe, and GMC Sierra, among others.

In addition to its functionality, the WEHRLI billet fitting boasts a clear anodized finish that not only enhances its appearance but also offers excellent corrosion resistance, ensuring long-term performance and reliability. By replacing GM/AC Delco Part Number 15032062 and Dorman Part Number 800-409, this upgrade guarantees a more robust and dependable coolant system for your vehicle. Upgrade to the WEHRLI Billet Coolant Heater Core Firewall Fitting and drive with confidence knowing your coolant system is secure.