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Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting

Wehrli · New

Wehrli 99-23 GM Billet Coolant Heater Core Firewall Fitting

MPN WCF100155 · Store SKU wcfWCF100155

$42.00
IN STOCK38 ready to ship

Supplier stock checked 11/8/2026, 8:23:44 AM UTC. Adding a part does not reserve it.

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Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

The factory plastic GM Coolant Heater Core Firewall Fitting is a common failure point on Duramax trucks and other GM vehicles. Our made in the USA, billet aluminum direct-fit replacement is more resistant to heat and vibration. Prevent leaks with this easy to install upgrade. Replaces GM/AC Delco Part Number 15032062 Wehrli Custom Fab Fitting Kit, GM Heater Core Quick Connect, Straight, Billet Fitting Kit, GM Heater Core Quick Connect, Straight, Billet

Manufacturer fitment & guides

Check WCF100155 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

Part-specific notes

  • California Proposition 65: Y
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