AUTOKAY Heater Hose 20765678 Replacement for Buick Enclave, Chevrolet Traverse & GMC Acadia — OEM Fit, Engine Coolant Line

AUTOKAY 20765678 heater hose is a direct replacement engine heater hose designed to restore proper coolant flow and fit GM SUVs including Buick Enclave, Chevrolet Traverse, and GMC Acadia models.

This replacement heater hose is manufactured to match the original equipment part number 20765678 and fits multiple model years across Buick, Chevrolet and GMC lineups. It’s intended as a like-for-like swap to the factory component, helping maintain your vehicle’s heating and engine coolant routing without modifying your existing system. Below you’ll find concise answers to common buyer questions, plus clear specifics about what this part fits and how it installs.

Which vehicles and years does this AUTOKAY heater hose fit?

This hose replaces part number 20765678 and fits a range of GM crossover and SUV models. It covers Saturn Outlook, GMC Acadia (including Acadia Limited), Buick Enclave, and Chevrolet Traverse over multiple production years.

• Saturn Outlook: 2007–2010
• GMC Acadia: 2007–2016; Acadia Limited: 2017
• Buick Enclave: 2008–2017
• Chevrolet Traverse: 2009–2017

How does this replacement hose compare to the original part?

AUTOKAY designs the 20765678 heater hose to match OEM dimensions and connection points so it installs without modification. Materials and molding are selected to withstand typical engine bay temperatures and coolant exposure.

• Direct OEM part number compatibility (20765678)
• Factory-style connectors and bends for plug-and-play installation
• Engine-grade rubber/resin blend for thermal and chemical resistance

What should I expect during installation?

Installation is straightforward for mechanics and experienced DIYers. The hose replaces the original component in the heater/core circuit; basic hand tools and coolant handling are required.

• Drain coolant to below the hose level before removal
• Loosen clamps, remove old hose, route new hose to match factory path
• Refill coolant and bleed the system per manufacturer procedure

When is it time to replace the heater hose?

Replace the hose if you see soft spots, cracking, swelling, coolant leaks, or if the hose has become excessively hard or flattened. Preventative replacement during overheating or cooling-system service can avoid roadside failures.

• Visible coolant seepage or dried residue at hose ends
• Bulges, deep cracks, or soft/feeling spongy rubber
• Age-related degradation after many years in service

Who this part is for: Owners and technicians servicing Saturn Outlook, GMC Acadia (and Acadia Limited), Buick Enclave, or Chevrolet Traverse models needing a reliable, OEM-compatible heater hose replacement. Choose this AUTOKAY 20765678 hose when you want a direct-fit part that restores proper coolant routing and heating performance without custom work. It's suitable for professional repair shops and competent DIYers performing scheduled cooling system maintenance or addressing a failed heater hose.