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Vehicle Info NeededGATESPART NUMBER: 465-21400
Molded Radiator Coolant Hose Coupler for Select 1981-2004 White/GMC, White and Freightliner Trucks
$4685
Ships on Sep 14, 2026
Lowest Price GuaranteeOEM-Spec Molded Radiator Coolant Hose CouplerFits Select 1981-2004 White/GMC, White and Freightliner Trucks Resists Vacuum Collapse and Electrochemical Degradation EPDM Tube with Reinforced Construction Sold Individually
Short coupler hoses see constant flexing and heat cycling, so they harden and split sooner than long hose runs. The Gates 21400 molded coolant hose coupler restores a factory-tight connection between cooling system components on these heavy-duty trucks.
Gates 21400 Coolant Hose Coupler Facts:
- Pre-shaped EPDM construction resists collapse under vacuum and seals perfectly at both connections.
- Synthetic fiber knit reinforcement and a heat-, ozone- and chemical-resistant cover fight electrochemical degradation.
- Meets SAE 20R4 class D2 and DIN 73411 class A performance requirements.
- Gates recommends replacing hose clamps whenever a new coolant hose is installed.
Engineered to Fit
Made to OE specs and cut-to-length, this molded hose has extra material so you can customize it to your application. EPDM tubing ensures long service life and resists electrochemical degradation that can cause tube cracking & unexpected hose failure.
Part TypeRadiator Hose
Product LineGates Coolant Hose
BrandGATES
Package Height3.4
Package Width3.42
Package Length4.9
Weight0.39 PG
Part CategoryReplacement Parts
Centerline Length (Mm)127
Inside Diameter 1 (In)2.5
PositionVarious - Application Specific
Inside Diameter 1 (Mm)64
MoldedYes
MaterialEPDM
ModularNo
Number Of Branches0
Contains SpringNo
Inside Diameter 2 (Mm)76
Inside Diameter 2 (In)3
Centerline Length (In)5
Part FitmentDirect Fit
Vendor Part Number21400
Package Qty1
Package TypeEA
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