Muzzys (SET OF TWO) UPGRADED 800-403 Stronger than OEM Heater Core Coolant Hose Quick Disconnect Connector w/Clamp ONLY FITS: 5/8" Tube and 5/8" Hose. FITS: Many Buick Chevrolet Ford GMC Oldsmobile

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US$12.00
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US$12.00
Price when purchased online
Free shipping Free 30-day returns

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Management number 231224093 Release Date 2026/06/18 List Price US$12.00 Model Number 231224093
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  • SOLD as a set of TWO: Muzzys 800-403 UPGRADED Nylon Heater Core Connector with Clamp for 5/8" Heater Core Inlets and Outlets and 5/8" Hoses. Does NOT fit the larger 3/4" Heater Core tubes. If you have two different size heater core tubes please don't buy these. They will not fit. These will only work if BOTH your heater hose tubes are 5/8"
  • Replace your old cracked, broken, and leaky heater core connectors with these UPGRADED stronger than OEM Nylon connectors.
  • See product description below for a list of known vehicles this fits. This is not a complete list. This will fit ANY vehicle that uses a 5/8" heater core line and a 5/8" hose.
  • Replaces the following part numbers: 28500 , 47165, Dorman 800-403, Dayco 80461; Gates 28500, CARQUEST 28500, ACDelco 34000, NAPA 99, 9927, GM 15119175, 15139564, E69Z18D435A 10042688, 10324194, 15032062, 15037826, 15119175, 15151873, 15151875, 15761641, 19129956, E69Z-18D435-A
  • Install: It is recommended to use a heater hose disconnect tool to remove the old connector from the firewall. When installing the new fitting it will be a tight fit by design, it is recommended to use some soapy water to help slide the new fitting onto the heater core tube and make sure to keep pushing it until you hear or feel a "click". Be sure to clean all the crud off the heater core tubes before installing the new fitting. Secure the heater hose with the included clamp.

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