HomeBelts and Cooling > Hoses and PipesGates 21183 Radiator Coolant Hose - Upper
Part #: 21183

Gates 21183 Radiator Coolant Hose - Upper

Molded Coolant Hose, Upper
⚙️ 35 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$32.52Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Coolant Hose, Upper
🚗Fitment: Buick, Oldsmobile, and Pontiac, Bonneville, Catalina, Century, Delta 88, Firebird, Grand Am, Grand LeMans, Grand Prix, Laurentian, LeMans, LeSabre, Parisienne, and Regal
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Radiator Coolant Hose for Buick, Oldsmobile, and Pontiac

The Gates Molded Coolant Hose 21183 is engineered to provide dependable cooling system performance for select Buick, Oldsmobile, and Pontiac vehicles. Designed with durable EPDM material, this radiator coolant hose ensures consistent heat resistance and flexibility for long-lasting service.

  • Constructed from high-quality EPDM rubber for heat and chemical resistance
  • Molded design for precise fit and leak prevention
  • Centerline length of 28.5 inches (724 mm) for accurate replacement
  • Inside diameter of 1.5 inches (38 mm) on both ends for proper coolant flow
  • Compatible with multiple Buick, Oldsmobile, and Pontiac models

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are pre-formed to match original equipment specifications. This eliminates the need for bending or shaping during installation, reducing the risk of kinks or leaks. The molded construction of part number 21183 ensures a secure and precise fit for the cooling systems of various GM vehicles.

Detailed Product Description

This radiator coolant hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. The molded design of the Gates 21183 hose provides a consistent shape that matches factory specifications, ensuring proper coolant flow and system integrity. Both ends feature an inside diameter of 1.5 inches (38 mm), suitable for direct replacement without modification. With a centerline length of 28.5 inches (724 mm), this hose fits specific Buick, Oldsmobile, and Pontiac models, including the Bonneville, Catalina, Century, Delta 88, Firebird, Grand Am, Grand LeMans, Grand Prix, Laurentian, LeMans, LeSabre, Parisienne, and Regal.

Common Applications and Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses
  • Prevention of coolant leaks that can cause engine overheating
  • Restoration of proper coolant flow in Buick, Oldsmobile, and Pontiac cooling systems
  • Elimination of hose collapse or kinking due to molded design
  • Maintenance of cooling system pressure and efficiency

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to avoid burns. Verify the hose routing matches the original to prevent interference with other engine components. Use appropriate clamps to secure both ends of the hose firmly. The molded shape of the Gates 21183 hose simplifies installation by fitting precisely without the need for bending or adjustment.

Quality Assurance and Warranty

Gates manufactures the Molded Coolant Hose 21183 to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction contribute to a reliable, long-lasting replacement part. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in material and workmanship.

BrandGates
Part Number21183
PositionMolded Coolant Hose, Upper
MaterialEpdm
End 1 Inside Diameter1.5
End 1 Inside Diameter38
End 2 Inside Diameter1.5
End 2 Inside Diameter38
Contains SpringNo
Centerline Length28.5
Centerline Length724
Branch Quantity0
9839Yes
98450
Modular HoseNo
MoldedYes
Number of Quick Connect Fittings0

This part fits 35 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1981BuickCentury4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981BuickRegal4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacBonneville4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacCatalina4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacFirebird4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacFirebird4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacGrand LeMans4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacGrand LeMans4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacGrand Prix4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacLaurentian4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacLeMans4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacLeMans4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1981PontiacParisienne4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980BuickCentury4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980BuickCentury4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980BuickLeSabre4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980BuickRegal4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980BuickRegal4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980OldsmobileDelta 884.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacBonneville4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacBonneville4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacCatalina4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacCatalina4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacFirebird4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacFirebird4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacGrand Am4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacGrand LeMans4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacGrand LeMans4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacGrand Prix4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacGrand Prix4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacLeMans4.3LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1980PontiacLeMans4.9LV8GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1979PontiacFirebird4.9LV8GASUpperMolded Coolant Hose
1979PontiacFirebird6.6LV8GASUpperMolded Coolant Hose
1978PontiacFirebird6.6LV8GASUpperMolded Coolant Hose

* 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:

1001033110010385100129071001368014-1645-8179211832319226058X41107489867611077103277-8722-97893C1183E71032KM-1216MC100MH-4183MH477P21183

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