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177359193224-0 - Northline Parts

GM Heater Inlet Hose 20765678 for Enclave Traverse Acadia Outlook 3.6L

SKU: NLT1W01627
$38.99 In Stock
$38.99
Sale price  $38.99 Regular price 
Ships for free in 2–4 business days.
This molded heater inlet hose replaces GM 20765678 and 25862087 on compatible Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook 3.6L models.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • 2008-2017 Buick Enclave 3.6L
  • 2009-2017 Chevrolet Traverse 3.6L
  • 2007-2016 GMC Acadia 3.6L
  • 2017 GMC Acadia Limited 3.6L
  • 2007-2010 Saturn Outlook 3.6L

Product Overview

Sweet coolant smell, a wet firewall-area connection, weak cabin heat, or crust along a molded hose junction can identify a heater inlet hose leak. Pressure-test the system cold and inspect the heater core, quick connects, water pump, reservoir, and outlet hoses too.

The branched molded assembly carries engine coolant toward the heater circuit and follows a vehicle-specific route. It is approximately 12.24 inches along the primary assembly and uses multiple end diameters; connector condition and routing clips matter as much as hose shape.

Key Features & Performance

  • Vehicle-specific molded heater inlet hose
  • Supersedes 25862087 with 20765678
  • Branched design for the 3.6L cooling circuit
  • Known Buick, Chevrolet, GMC, and Saturn applications
  • New aftermarket hose assembly

Replaces Part Numbers

  • 20765678
  • 25862087

Common Uses

  • Repairing a pinhole or split molded heater hose
  • Replacing brittle quick-connect areas
  • Restoring coolant flow after a collapsed or internally damaged hose

Technical Specifications

  • Product Type: Molded Heater Inlet Hose Assembly
  • Primary Application: GM Lambda-platform 3.6L vehicles using 20765678
  • Package Quantity: 1 molded hose assembly
  • Condition: New
  • Replacement Type: Aftermarket
  • Current Reference: 20765678
  • Previous Reference: 25862087
  • Material: Molded rubber assembly
  • Approximate Length: 12.24 inches
  • Branch Quantity: 1

Installation & Fitment

  • Allow the engine to cool completely and release pressure
  • Drain coolant below the hose level
  • Inspect mating tubes and replace damaged clamps or connectors
  • Route without kinks, refill with correct coolant, bleed air, and pressure-test

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.

Model, production date, serial number, connector, dimensions, installed options, and previous repairs can affect fitment. Compare the original component and reference information before purchase.

Frequently Asked Questions

Q: Can a heater hose leak cause overheating? A: Yes. Coolant loss and trapped air can reduce circulation and create hot spots.

Q: Why is the Chevrolet Traverse listed from 2009, not 2008? A: The Traverse model-year application begins in 2009, while Enclave fitment begins in 2008.

Q: How do I confirm this is the correct part? A: Match VIN, 3.6L engine, 20765678, molded shape, branch, end diameters, quick-connects, clamps, routing, and heater inlet location.

Q: Is this supplied by the original equipment manufacturer? A: No. This is a new aftermarket item. Brand, model, and part numbers are used only to identify compatible applications.

Part Summary

keywords: GM 20765678 heater hose, Buick Enclave coolant hose, Chevy Traverse heater inlet leak, GMC Acadia 25862087 replacement, Saturn Outlook molded coolant hose

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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