Gates 21403 Radiator Coolant Hose - Upper
OE Quality 60-Day Returns
Gates
 Molded Coolant Hose

Gates 21403 Radiator Coolant Hose - Upper

Brand Gates 21403
Position Upper
0
Yes
Branch Quantity 0
Centerline Length 23.7
Centerline Length 602
Contains Spring No
End 1 Inside Diameter 1.75
End 1 Inside Diameter 44
End 2 Inside Diameter 2
End 2 Inside Diameter 51
Material EPDM
Modular Hose No
Molded Yes
Number of Quick Connect Fittings 0
Product line Molded Coolant Hose
Fits Ford · 25 vehicles

OEM-quality specifications. Molded coolant hose built for replacement applications.

EPDM construction. Resists heat and coolant exposure for dependable service.

Molded design. Fits coolant routing with a formed, application-specific shape.

Cross-references Anchor 8100, Champion Spark Plug 824 and Dayco 71211 for the same application. See all 29.

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Not what you need? See all Radiator Coolant Hose options

Gates 21403 Molded Coolant Hose Overview

Gates 21403 is a molded radiator coolant hose built for upper coolant routing on select Ford trucks. It uses EPDM construction and OEM-style molded shaping to match the factory hose path for service replacement on applications such as the Ford F-150, Ford F-250, and Ford F-350.

The Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant hose applications with OE-style fitment details. For buyers searching for a Ford F-250 upper radiator hose or a Ford F-350 molded coolant hose replacement, part number 21403 provides a direct replacement option for the listed vehicles.

Key Features

  • Brand: Gates Molded Coolant Hose
  • Part number: 21403
  • Material: EPDM
  • Molded design for factory-style hose routing
  • End 1 inside diameter: 1.75 in. (44 mm)
  • End 2 inside diameter: 2 in. (51 mm)
  • Centerline length: 23.7 in. (602 mm)
  • No spring, no modular hose, no quick-connect fittings
  • Upper position application

Detailed Description

Gates 21403 is a molded radiator coolant hose engineered for upper radiator hose service on 1983-1994 Ford F-250, 1983-1994 Ford F-350, and 1984 Ford F-150 applications listed with standard cooling and no air conditioning. The molded shape helps match the original hose path, while the EPDM construction is suited for coolant system service where heat and fluid exposure are routine. If you need a Ford F-150 upper coolant hose replacement or a molded coolant hose for a Ford F-250 or Ford F-350, this part number 21403 is the relevant OE-style replacement reference.

This part cross-references Dayco 71211 for the same application.

What It Helps Address

  • Cracked or aged upper radiator hose material
  • Coolant leaks at the hose body or connection points
  • Incorrect hose routing from a non-molded replacement
  • Heat-related hose softening or swelling
  • Service replacement for worn Ford truck coolant hoses

Installation Notes and Tips

Verify the vehicle is listed with no A.C. and standard cooling before ordering. Confirm the upper hose routing, end diameters, and centerline length against the removed hose before installation. Inspect the radiator neck and engine outlet for corrosion or damage, and replace clamps if the existing hardware no longer holds proper tension.

Quality Assurance

Gates manufactures molded coolant hoses to OEM-quality specifications for listed coolant applications. Part number 21403 is built as a direct-fit replacement for the confirmed Ford truck applications shown above.

Related reading

This part fits 25 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1994FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1994FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1993FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1993FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1992FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1992FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1991FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1991FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1990FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1990FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1989FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1989FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1988FordF-2507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1988FordF-3507.3LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1987FordF-2506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1987FordF-3506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1986FordF-2506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1986FordF-3506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1985FordF-2506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1985FordF-3506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1984FordF-1506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1984FordF-2506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1984FordF-3506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1983FordF-2506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
1983FordF-3506.9LV8DIESELUpperW/O A.C.; W/Std. Cool.; W/37" Wide Rad.; Molded Coolant Hose
Directly replaces or cross-references 29 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 8100Champion Spark Plug — 824Dayco — 71211Eastern Catalytic — 41324Eastern Catalytic — 41326FEL-PRO — 61324Gates — 2140314-1609-677-8787-222172M642327C1403C71211E3TA 8B274 NAE3TZ 8260 DE4TA 8B274 CCE4TA 8B274 EAE4TA 8B274 EBE5TA 8B274 VAE5TA 8B274 XAE9TA 8B274 LAE9TA 8B274 LBF0TZ 8260 GF2TA 8B274 AEAKM-1390KM-1778KM-1885MC214MH-4403