Dayco 77138GL Engine Coolant Bypass Hose - Left
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Dayco

Dayco 77138GL Engine Coolant Bypass Hose - Left

Brand Dayco 77138GL
Position Left
Fits —

Heavy-duty hose. Built for engine coolant bypass applications.

Straight design. Simplifies routing in cooling system plumbing.

Cross-references ACDelco 31055, CARQUEST 24222 and Gates 24222 for the same application. See all 7.

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Dayco 77138GL Engine Coolant Bypass Hose

Dayco 77138GL is a straight radiator hose from the H.D. line, built for engine coolant bypass service in cooling system applications. It is a direct-fit style replacement for vehicles that use a straight bypass hose layout, including select Chevrolet and GMC truck applications referenced by common cross numbers.

Key Features

  • Straight radiator hose configuration for coolant bypass routing
  • Dayco Straight Radiator Hose - H.D. product line
  • Engine coolant bypass hose for cooling system service
  • Cross-references ACDelco 31055 and CARQUEST 24222 for the same application
  • Part number 77138GL for catalog and fitment lookup

Product Details

The Dayco 77138GL hose is intended for cooling system repair where a straight bypass hose is required. As part of Dayco’s Straight Radiator Hose - H.D. line, it serves as a heavy-duty style replacement for engine coolant transfer between cooling system components. This part number, 77138GL, is commonly searched for Chevrolet and GMC truck cooling repairs, especially when matching an OE-style bypass hose by cross reference.

This part cross-references ACDelco 31055 and CARQUEST 24222 for the same application.

Common Issues It Can Address

  • Coolant seepage at a worn bypass hose
  • Cracking or hardening from heat and age
  • Soft spots or swelling in the hose body
  • Cooling system leaks traced to the bypass line
  • Loss of coolant circulation through the bypass route

Installation Notes

Verify hose routing, inside diameter, and end connections against the original part before installation. Inspect adjoining clamps, fittings, and nearby coolant hoses for wear, corrosion, or residue before reassembly. After installation, refill the cooling system with the correct coolant and check for leaks at operating temperature.

Quality Assurance

Dayco is a recognized supplier of engine cooling components, and the 77138GL is cataloged as a heavy-duty straight radiator hose for bypass service. Confirm application details by vehicle and cross-reference before ordering.

Related reading

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 31055CARQUEST — 24222Gates — 24222Gates — 24622Goodyear — 56022NAPA — 631NAPA — 1803