Gates
Molded Coolant Hose

Gates 20838 Radiator Coolant Hose - Upper

Brand Gates 20838
Position Upper
0
Yes
Branch Quantity 0
Centerline Length 28.9
Centerline Length 734
Contains Spring No
End 1 Inside Diameter 1.5
End 1 Inside Diameter 38
End 2 Inside Diameter 1.5
End 2 Inside Diameter 38
Material EPDM
Modular Hose No
Molded Yes
Number of Quick Connect Fittings 0
Product line Molded Coolant Hose
Fits Chevrolet and GMC · 79 vehicles

OE-quality specifications. Built to match replacement expectations for coolant hose applications.

Molded EPDM construction. Durable rubber material resists heat and coolant exposure.

Molded coolant hose. Formed for radiator and other coolant routing needs.

Cross-references AP Exhaust 7582, Gates 20838 and 14-1898-6 for the same application. See all 10.

$47.62Free shipping
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Order total $47.62
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Free returns within 60 days if it doesn't fit when fitment is verified.

Gates 20838 Molded Coolant Hose Overview

The Gates 20838 molded coolant hose is an OE-style radiator coolant hose built for upper cooling-system routing on select Chevrolet and GMC vans. Made from EPDM, it follows OEM-quality specifications for a direct replacement on vehicles that need a formed hose shape and precise 1.5-inch end connections.

Gates Molded Coolant Hose parts are built for upper, lower, bypass, heater, and other coolant applications, giving technicians a formed-hose replacement option that matches the routing required by the vehicle. For Chevrolet G10, G20, and G30 and GMC G15, G25, and G35 applications, this line supports radiator hose service without needing to source an OE dealer part.

Key Features

  • Part number: Gates 20838
  • Brand line: Molded Coolant Hose
  • Material: EPDM for coolant-system service
  • 1.5 in. inside diameter at both ends
  • Centerline length: 28.9 in. (734 mm)
  • Molded hose shape for proper routing
  • No spring and no quick-connect fittings
  • Upper radiator coolant hose application

Detailed Product Description

This molded radiator coolant hose is built for direct replacement use on select 1972-1979 Chevrolet and GMC vans, including upper hose applications on Chevrolet G10, G20, and G30 as well as GMC G15, G25, G35, G1500, G2500, and G3500 models. The Gates 20838 uses EPDM construction and a formed profile to match the cooling-system path required by these vehicles. If you are replacing a worn upper hose on a Chevrolet G10 or GMC G15, this part number provides the correct molded layout for the listed standard-cooling, non-AC applications.

What This Hose Helps Address

  • Coolant leaks from cracked or aged radiator hose material
  • Softening, swelling, or collapse in an old upper coolant hose
  • Incorrect hose routing after a previous repair
  • Cooling-system service on vehicles with standard cooling and no air conditioning
  • Replacement needs for a formed hose on Chevrolet and GMC van applications

Installation Notes and Tips

  • Verify the vehicle is listed for this hose before ordering; fitment is specific to upper-position applications.
  • Confirm the vehicle does not have air conditioning where the fitment notes specify non-AC use.
  • Inspect hose clamps, thermostat housing, and radiator necks before installation.
  • Check the hose routing against the original part to confirm the molded shape and length.
  • Refill and bleed the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for radiator hose replacement service. The Gates 20838 is part of a broad molded coolant hose line covering multiple cooling-system applications, including upper hose replacements for Chevrolet and GMC vans.

This part cross-references AP Exhaust 7582 for the same application.

This part fits 79 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1979ChevroletG105.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979ChevroletG105.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979ChevroletG205.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979ChevroletG206.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979ChevroletG305.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979ChevroletG305.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979ChevroletG306.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG15005.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG15005.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG15006.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG25005.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG25006.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG35005.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1979GMCG35006.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG105.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG105.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG205.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG206.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG305.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG305.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978ChevroletG306.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978GMCG155.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978GMCG155.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978GMCG255.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978GMCG256.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978GMCG355.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1978GMCG356.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977ChevroletG105.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977ChevroletG105.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977ChevroletG205.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977ChevroletG206.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977ChevroletG305.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977ChevroletG306.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977GMCG155.0LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977GMCG155.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977GMCG255.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977GMCG256.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977GMCG355.7LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1977GMCG356.6LV8GASUpperWithout air conditioning; with standard cooling.; Molded Coolant Hose
1976ChevroletG105.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976ChevroletG106.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976ChevroletG205.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976ChevroletG206.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976ChevroletG305.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976ChevroletG306.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976GMCG155.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976GMCG156.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976GMCG255.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976GMCG256.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976GMCG355.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1976GMCG356.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975ChevroletG105.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975ChevroletG205.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975ChevroletG206.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975ChevroletG305.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975ChevroletG306.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975GMCG155.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975GMCG255.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975GMCG256.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975GMCG355.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1975GMCG356.6LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1974GMCG15/G1500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1974GMCG25/G2500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1974GMCG35/G3500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1974GMCG35/G3500 Van5.7LV8LPGUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG15/G1500 Van5.0LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG15/G1500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG25/G2500 Van5.0LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG25/G2500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG35/G3500 Van5.0LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG35/G3500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1973GMCG35/G3500 Van5.7LV8LPGUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG15/G1500 Van5.0LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG15/G1500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG25/G2500 Van5.0LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG25/G2500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG35/G3500 Van5.0LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG35/G3500 Van5.7LV8GASUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
1972GMCG35/G3500 Van5.7LV8LPGUpperNot compatible with vehicles equipped with AC.; Molded Coolant Hose
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 7582Gates — 2083814-1898-6740 20526024X3352756262569C0838MH-890MH344