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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.
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.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1979 | Chevrolet | G10 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | Chevrolet | G10 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | Chevrolet | G20 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | Chevrolet | G20 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | Chevrolet | G30 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | Chevrolet | G30 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | Chevrolet | G30 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G1500 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G1500 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G1500 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G2500 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G2500 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G3500 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1979 | GMC | G3500 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G10 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G10 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G20 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G20 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G30 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G30 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | Chevrolet | G30 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | GMC | G15 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | GMC | G15 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | GMC | G25 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | GMC | G25 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | GMC | G35 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1978 | GMC | G35 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | Chevrolet | G10 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | Chevrolet | G10 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | Chevrolet | G20 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | Chevrolet | G20 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | Chevrolet | G30 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | Chevrolet | G30 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | GMC | G15 | 5.0L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | GMC | G15 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | GMC | G25 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | GMC | G25 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | GMC | G35 | 5.7L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1977 | GMC | G35 | 6.6L | V8 | GAS | Upper | Without air conditioning; with standard cooling.; Molded Coolant Hose |
| 1976 | Chevrolet | G10 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | Chevrolet | G10 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | Chevrolet | G20 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | Chevrolet | G20 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | Chevrolet | G30 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | Chevrolet | G30 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | GMC | G15 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | GMC | G15 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | GMC | G25 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | GMC | G25 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | GMC | G35 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1976 | GMC | G35 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | Chevrolet | G10 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | Chevrolet | G20 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | Chevrolet | G20 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | Chevrolet | G30 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | Chevrolet | G30 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | GMC | G15 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | GMC | G25 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | GMC | G25 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | GMC | G35 | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1975 | GMC | G35 | 6.6L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1974 | GMC | G15/G1500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1974 | GMC | G25/G2500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1974 | GMC | G35/G3500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1974 | GMC | G35/G3500 Van | 5.7L | V8 | LPG | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G15/G1500 Van | 5.0L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G15/G1500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G25/G2500 Van | 5.0L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G25/G2500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G35/G3500 Van | 5.0L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G35/G3500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1973 | GMC | G35/G3500 Van | 5.7L | V8 | LPG | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G15/G1500 Van | 5.0L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G15/G1500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G25/G2500 Van | 5.0L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G25/G2500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G35/G3500 Van | 5.0L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G35/G3500 Van | 5.7L | V8 | GAS | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
| 1972 | GMC | G35/G3500 Van | 5.7L | V8 | LPG | Upper | Not compatible with vehicles equipped with AC.; Molded Coolant Hose |
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