Fits: 1999-2023 Duramax w/ 6.6L LB7/ LLY/ LBZ/ LMM/ LML/ L5P
Part Number: WCF100155
- Replaces failure-prone plastic factory GM Heater Core Firewall Coolant Fitting
- Billet direct-fit replacement with 5/8" barb connection
- More resistant to heat and vibration
- Double O-ring seal
- Clear Anodized finished to resist corrosion
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