Homeβ€Ί Belts and Cooling > Hoses and Pipesβ€Ί Gates 26603 Radiator Coolant Hose
Part #: 26603

Gates 26603 Radiator Coolant Hose

Flexible Coolant Hose (Heavy-Duty), Upper, Lower, Lower - Pipe To Radiator, and Lower - Water Pump To Pipe
βš™οΈ 100 vehicles fit this part
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πŸ“¦Flexible Coolant Hose (Heavy-Duty), Upper, Lower, Lower - Pipe To Radiator, and Lower - Water Pump To Pipe
πŸš—Fitment: Cadillac, Ford, Jaguar, Lincoln, Mercury, and Pontiac, Catalina, Colony Park, Commercial Chassis, Continental, DeVille, Eldorado, F-100, F-250, F-350, Marauder, Thunderbird, and XJ6
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Reliable Cooling Solution for Select Cadillac and Ford Models

The Gates Flexible Coolant Hose (Heavy-Duty) part number 26603 is engineered to provide durable and efficient coolant flow for various vehicle applications. Designed with quality materials and precise dimensions, this radiator coolant hose supports optimal engine temperature regulation in vehicles like the Cadillac DeVille and Ford F-250.

Key Features of Gates Flexible Coolant Hose 26603

  • Constructed from EPDM rubber and steel for enhanced durability and heat resistance
  • Uniform inside diameter of 1.75 inches on both ends for consistent coolant flow
  • Centerline length of 11 inches (279 mm) to fit specific radiator connections
  • Heavy-duty design suitable for demanding cooling system requirements
  • Compatible with multiple makes including Cadillac, Ford, Jaguar, Lincoln, Mercury, and Pontiac

About the Flexible Coolant Hose (Heavy-Duty) Product Line

The Gates Flexible Coolant Hose (Heavy-Duty) line focuses on delivering robust radiator hoses that withstand high temperatures and pressure conditions. This product line emphasizes material quality and dimensional accuracy to ensure reliable performance in heavy-duty and classic vehicle applications. Part number 26603 exemplifies these standards with its EPDM and steel construction and precise fitment specifications.

Detailed Product Description

This radiator coolant hose features EPDM rubber, known for its resistance to heat, ozone, and coolant chemicals, combined with steel reinforcement to maintain structural integrity under pressure. Both ends have an inside diameter of 1.75 inches, ensuring a secure and leak-free connection to the cooling system. The hose measures 11 inches (279 mm) in centerline length, making it suitable for specific radiator setups found in vehicles such as the Cadillac Eldorado and Ford F-100. The hose is molded without knobs and is designed for flexible installation without compromising durability.

Common Applications and Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses in Cadillac Continental and Lincoln Continental models
  • Resolving coolant leaks caused by hose degradation in Ford F-350 and Mercury Marauder vehicles
  • Maintaining proper engine temperature by ensuring consistent coolant flow in Jaguar XJ6 and Pontiac Catalina
  • Upgrading cooling system components in classic and commercial chassis vehicles
  • Preventing overheating issues related to faulty or damaged radiator hoses

Installation Notes and Tips

  • Verify hose dimensions and fitment compatibility with your specific vehicle model before installation
  • Ensure all clamps and connections are securely tightened to prevent leaks
  • Inspect surrounding cooling system components for wear or damage during replacement
  • Allow the engine to cool completely before removing the old hose to avoid burns
  • Use appropriate tools to avoid damaging the hose or radiator fittings during installation

Quality Assurance and Warranty Information

Gates manufactures the Flexible Coolant Hose (Heavy-Duty) line with strict quality control standards to meet OEM specifications. The use of EPDM and steel materials ensures resistance to heat and pressure, contributing to long service life. While specific warranty details for part number 26603 are not provided here, Gates products typically come with manufacturer-backed warranties covering defects in material and workmanship.

BrandGates
Part Number26603
PositionFlexible Coolant Hose (Heavy-Duty), Upper, Lower, Lower - Pipe To Radiator, and Lower - Water Pump To Pipe
MaterialEpdm, steel
End 1 Inside Diameter1.75
End 2 Inside Diameter1.75
Centerline Length11
Centerline Length279
Temperature Low44
Knob Color44
9839No
MoldedNo

This part fits 100 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
1989JaguarXJ63.6LL6GASLower - Water Pump To PipeFlexible Coolant Hose (Heavy-Duty)
1973JaguarXJ64.2LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1972JaguarXJ64.2LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1967LincolnContinental7.6LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966FordThunderbird6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966FordThunderbird7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966LincolnContinental7.6LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966MercuryColony Park6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966MercuryColony Park6.7LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966MercuryColony Park7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966MercuryMarauder6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966MercuryMarauder6.7LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1966MercuryMarauder7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1965FordThunderbird6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1965FordThunderbird7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1965LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1965MercuryColony Park6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1965MercuryMarauder6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1964FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1964FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1964FordThunderbird6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964FordThunderbird7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964MercuryColony Park6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964MercuryColony Park7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964MercuryMarauder6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1964MercuryMarauder7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1963FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1963FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1963FordThunderbird6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963FordThunderbird7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963MercuryColony Park6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963MercuryColony Park6.6LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963MercuryColony Park7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963MercuryMarauder6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963MercuryMarauder6.6LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1963MercuryMarauder7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1962FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1962FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1962FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1962LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1962MercuryColony Park5.8LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1962MercuryColony Park6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1961FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1961FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1961FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1961LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1961MercuryColony Park5.8LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1961MercuryColony Park6.4LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1960FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1960FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1960FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1960LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1960MercuryColony Park7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1959FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1959FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1959FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1959LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1959MercuryColony Park6.3LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1959MercuryColony Park7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1958CadillacCommercial Chassis6.0LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1958CadillacCommercial Chassis6.0LV8GASLowerNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1958CadillacDeVille6.0LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1958CadillacDeVille6.0LV8GASLowerNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1958CadillacEldorado6.0LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1958CadillacEldorado6.0LV8GASLowerNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1958FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1958FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1958FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1958LincolnContinental7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1958MercuryColony Park6.3LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1958MercuryColony Park7.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1957CadillacCommercial Chassis6.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1957CadillacCommercial Chassis6.0LV8GASLowerFlexible Coolant Hose (Heavy-Duty)
1957CadillacDeVille6.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1957CadillacDeVille6.0LV8GASLowerFlexible Coolant Hose (Heavy-Duty)
1957CadillacEldorado6.0LV8GASUpperFlexible Coolant Hose (Heavy-Duty)
1957CadillacEldorado6.0LV8GASLowerFlexible Coolant Hose (Heavy-Duty)
1957FordF-100Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1957FordF-250Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1957FordF-350Automatic3.6LL6GASLower - Pipe To RadiatorFlexible Coolant Hose (Heavy-Duty)
1956CadillacCommercial Chassis6.0LV8GASUpperHVAC heater hose with A/C, fits Serpentine Belt application.; Flexible Coolant Hose (Heavy-Duty)
1956CadillacCommercial Chassis6.0LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1956CadillacDeVille6.0LV8GASUpperHVAC heater hose with A/C, fits Serpentine Belt application.; Flexible Coolant Hose (Heavy-Duty)
1956CadillacDeVille6.0LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1956CadillacEldorado6.0LV8GASUpperHVAC heater hose with A/C, fits Serpentine Belt application.; Flexible Coolant Hose (Heavy-Duty)
1956CadillacEldorado6.0LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1955CadillacCommercial Chassis5.4LV8GASUpperHVAC heater hose with A/C, fits Serpentine Belt application.; Flexible Coolant Hose (Heavy-Duty)
1955CadillacCommercial Chassis5.4LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1955CadillacDeVille5.4LV8GASUpperHVAC heater hose with A/C, fits Serpentine Belt application.; Flexible Coolant Hose (Heavy-Duty)
1955CadillacDeVille5.4LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1955CadillacEldorado5.4LV8GASUpperHVAC heater hose with A/C, fits Serpentine Belt application.; Flexible Coolant Hose (Heavy-Duty)
1955CadillacEldorado5.4LV8GASUpperNot compatible with vehicles equipped with AC.; Flexible Coolant Hose (Heavy-Duty)
1953PontiacCatalina4.4LL8GASUpperFlexible Coolant Hose (Heavy-Duty)
1952PontiacCatalina4.4LL8GASUpperFlexible Coolant Hose (Heavy-Duty)
1951PontiacCatalina4.4LL8GASUpperFlexible Coolant Hose (Heavy-Duty)
1950PontiacCatalina4.4LL8GASUpperFlexible Coolant Hose (Heavy-Duty)

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

10-1917310071010101656127217313001521310131113213944671401677163977217013651881807199036229827R1246276224627632660327295341C1314054531683317403600274261014949-850000690450851636252810528116530356730160201677214A67908679096792970117117130015277-8341-87M107M118130181311A628346C2A711AE 8286 ABH-621BH-631C0MM 8260 AC3AA 8260 CC3TZ 8260 GC5TA 8260 HC5TA 8286 AJC5TA 8286 VC5TZ 8286 UC6428C7TA 8260 SC7TZ 8260 FC9PZ 8260 SF17142FH27FM41HCF6268KC-110M11MK 8260 AN91204AFPB9M 8260 ARH59RH8T8341

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.