Gates 21385 Radiator Coolant Hose - Lower
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Gates
 Molded Coolant Hose

Gates 21385 Radiator Coolant Hose - Lower

Brand Gates 21385
Position Lower
0
Yes
Branch Quantity 0
Centerline Length 20.2
Centerline Length 513
Contains Spring No
End 1 Inside Diameter 1.25
End 1 Inside Diameter 32
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 · 36 vehicles

OEM-quality specifications. Built as a molded coolant hose for dependable replacement fit.

EPDM construction. Resists heat and coolant exposure for long service life.

Molded design. Helps route coolant cleanly with a precise, formed shape.

Cross-references Continental 61398, Dayco 71325 and Gates 21385 for the same application. See all 19.

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Gates 21385 Molded Coolant Hose

The Gates 21385 molded coolant hose is a radiator coolant hose built to OEM-quality specifications for lower cooling system routing. Made from EPDM, it is shaped for a precise fit on select Chevrolet S10, GMC Sonoma, GMC S15, Chevrolet S10 Blazer, and GMC S15 Jimmy applications.

Key Features

  • Brand: Gates Molded Coolant Hose line
  • Part number: 21385
  • Material: EPDM for cooling system service
  • Molded construction for formed hose routing
  • End inside diameters: 1.25 in. (32 mm) and 1.5 in. (38 mm)
  • Centerline length: 20.2 in. (513 mm)
  • Lower radiator coolant hose application
  • Compatible With select 1983-1993 Chevrolet S10 and related GMC models

Product Details

Gates Molded Coolant Hose part number 21385 is part of a broad replacement hose line built for upper, lower, bypass, heater, and other coolant routing needs. This molded EPDM hose follows OEM-style dimensions to help restore proper coolant flow and routing in vehicles such as the Chevrolet S10 and GMC Sonoma. The formed shape supports a direct replacement approach for lower radiator hose service where a straight hose would not match the factory path.

This part cross-references Continental 61398 and Dayco 71325 for the same application.

Common Cooling System Issues It Can Address

  • Cracked or deteriorated lower radiator hose material
  • Coolant seepage at worn hose connections
  • Incorrect hose routing after prior repairs
  • Restricted coolant flow from a damaged hose shape
  • Service replacement for aging factory hose assemblies

Installation Notes and Tips

Verify end diameters and centerline length against the original hose before installation. Confirm the hose routing matches the lower radiator path on the vehicle and inspect adjoining clamps, necks, and coolant fittings for wear before reassembly. For fitment reference, this hose fits 1983-1993 Chevrolet S10, lower; 1991-1993 GMC Sonoma, lower; 1983-1990 GMC S15, lower; 1983-1989 Chevrolet S10 Blazer, lower; and 1983-1989 GMC S15 Jimmy, lower.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications using EPDM construction for cooling system service. The Gates molded coolant hose line is engineered as a comprehensive replacement option for radiator hose applications.

Related reading

This part fits 36 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1993ChevroletS102.8LV6GASLowerMolded Coolant Hose
1993GMCSonoma2.8LV6GASLowerMolded Coolant Hose
1992ChevroletS102.8LV6GASLowerMolded Coolant Hose
1992GMCSonoma2.8LV6GASLowerMolded Coolant Hose
1991ChevroletS102.8LV6GASLowerMolded Coolant Hose
1991GMCSonoma2.8LV6GASLowerMolded Coolant Hose
1990ChevroletS102.8LV6GASLowerMolded Coolant Hose
1990GMCS152.8LV6GASLowerMolded Coolant Hose
1989ChevroletS102.8LV6GASLowerMolded Coolant Hose
1989ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1989GMCS152.8LV6GASLowerMolded Coolant Hose
1989GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
1988ChevroletS102.8LV6GASLowerMolded Coolant Hose
1988ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1988GMCS152.8LV6GASLowerMolded Coolant Hose
1988GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
1987ChevroletS102.8LV6GASLowerMolded Coolant Hose
1987ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1987GMCS152.8LV6GASLowerMolded Coolant Hose
1987GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
1986ChevroletS102.8LV6GASLowerMolded Coolant Hose
1986ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1986GMCS152.8LV6GASLowerMolded Coolant Hose
1986GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
1985ChevroletS102.8LV6GASLowerMolded Coolant Hose
1985ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1985GMCS152.8LV6GASLowerMolded Coolant Hose
1985GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
1984ChevroletS102.8LV6GASLowerMolded Coolant Hose
1984ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1984GMCS152.8LV6GASLowerMolded Coolant Hose
1984GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
1983ChevroletS102.8LV6GASLowerMolded Coolant Hose
1983ChevroletS10 Blazer2.8LV6GASLowerMolded Coolant Hose
1983GMCS152.8LV6GASLowerMolded Coolant Hose
1983GMCS15 Jimmy2.8LV6GASLowerMolded Coolant Hose
Directly replaces or cross-references 19 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Continental — 61398Dayco — 71325Gates — 21385Hygrade Tuneup — 640OSC — 366OSC — 201814-1848-6808222167M4139814060028155478251560623915693812C1385D71325KM-2144MC154MH-4385