HomeBelts and Cooling > Hoses and PipesGates 21591 Radiator Coolant Hose
Part #: 21591

Gates 21591 Radiator Coolant Hose

Molded Coolant Hose, Upper, Lower - Pipe-2 To Radiator, Lower, and Lower - Engine To Pipe
⚙️ 74 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Coolant Hose, Upper, Lower - Pipe-2 To Radiator, Lower, and Lower - Engine To Pipe
🚗Fitment: Acura, Chevrolet, Honda, Isuzu, Oldsmobile, Pontiac, Saab, Suzuki, Toyota, and Volvo, 740, 745, 760, 780, 9-3, 9-3X, 940, Amigo, Celica, Legend, Lumina APV, Passport, Pickup, RL, Silhouette, TL, Tracker, Trans Sport, Trooper, and Vitara
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Reliable Radiator Coolant Hose for Acura, Honda, Toyota, and More

The Gates Molded Coolant Hose 21591 is engineered to provide dependable coolant flow for a variety of vehicles including Acura, Honda, Toyota, and several other makes. Designed with durable EPDM material and precise molded construction, this radiator coolant hose ensures a secure fit and long-lasting performance.

Key Features of Gates Molded Coolant Hose 21591

  • Constructed from high-quality EPDM material for heat and chemical resistance
  • Molded design for exact fit and reliable sealing
  • Centerline length of 14.3 inches (363 mm) for proper routing
  • End 1 inside diameter: 1.19 inches (30 mm)
  • End 2 inside diameter: 1.3 inches (33 mm)
  • Does not contain a spring, ensuring flexibility without added rigidity
  • Compatible with multiple vehicle makes and models

Detailed Description of the Molded Coolant Hose 21591

The Gates Molded Coolant Hose 21591 is part of the Molded Coolant Hose product line, which focuses on precision-molded hoses designed to meet exact OEM specifications. This hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals, making it suitable for radiator applications. The molded construction eliminates the need for clamps or additional fittings, providing a secure and leak-resistant connection. With a centerline length of 14.3 inches (363 mm) and carefully measured inside diameters of 1.19 inches (30 mm) and 1.3 inches (33 mm) at each end, this hose fits specific coolant system layouts in vehicles such as the Acura RL, Honda Legend, Toyota Celica, and others.

Compatible Vehicles and Common Applications

  • Acura RL and TL models requiring molded radiator coolant hoses
  • Honda Legend and Passport coolant system replacements
  • Toyota Celica and Pickup radiator hose applications
  • Chevrolet Lumina APV and Oldsmobile 740 series coolant hose needs
  • Isuzu Trooper and Suzuki Vitara radiator hose replacements

Installation Notes and Tips

  • Ensure the engine is cool before removing the old hose to prevent burns
  • Check hose routing and orientation to match the molded shape
  • Inspect hose connections for corrosion or damage before installation
  • Use proper clamps if required by the vehicle’s cooling system design
  • Verify no kinks or twists in the hose after installation to maintain coolant flow

Quality Assurance and Warranty Information

Gates Molded Coolant Hose 21591 is manufactured to meet stringent quality standards, ensuring durability and reliable performance in demanding automotive environments. The EPDM material and molded design contribute to resistance against heat, pressure, and coolant chemicals. While specific warranty details are not provided, Gates products typically adhere to industry standards for automotive replacement parts.

BrandGates
Part Number21591
PositionMolded Coolant Hose, Upper, Lower - Pipe-2 To Radiator, Lower, and Lower - Engine To Pipe
MaterialEpdm
End 1 Inside Diameter1.19
End 1 Inside Diameter30
End 2 Inside Diameter1.3
End 2 Inside Diameter33
Contains SpringNo
Centerline Length14.3
Centerline Length363
Branch Quantity0
9839Yes
98450
Modular HoseNo
MoldedYes
Number of Quick Connect Fittings0

This part fits 74 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2011Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2011Saab9-3X2.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2010Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2010Saab9-3X2.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2009Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2008Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2007Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2006Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2005Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2004AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2004Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2003AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2003Saab9-32.0LL4GASUpperConnector required; Cut to fit; Molded Coolant Hose
2003Saab9-32.0LL4GASUpperEng. VIN S; Connector required; Cut to fit; Molded Coolant Hose
2003Saab9-32.0LL4GASUpperEng. VIN Y; Connector required; Cut to fit; Molded Coolant Hose
2002AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2002ChevroletTracker1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2002SuzukiVitara1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2001AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2001ChevroletTracker1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2001SuzukiVitara1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2000AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2000ChevroletTracker1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
2000SuzukiVitara1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1999AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1999ChevroletTracker1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1999SuzukiVitara1.6LL4GASLower - Pipe-2 To RadiatorRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1998AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1998AcuraTL3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1997AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1997AcuraTL3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1996AcuraRL3.5LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1996AcuraTL3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1996ChevroletLumina APV3.4LV6GASUpperOptional Hose; Cut to fit; Molded Coolant Hose
1996HondaPassport2.6LL4GASLowerRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1996OldsmobileSilhouette3.4LV6GASUpperOptional Hose; Cut to fit; Molded Coolant Hose
1996PontiacTrans Sport3.4LV6GASUpperOptional Hose; Cut to fit; Molded Coolant Hose
1995AcuraLegend3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1995HondaPassport2.6LL4GASLowerRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1994AcuraLegend3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1994HondaPassport2.6LL4GASLowerMolded Coolant Hose
1993AcuraLegend3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1993ToyotaCelica2.0LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1992AcuraLegend3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1992ToyotaCelica2.0LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1991AcuraLegend3.2LV6GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1991ToyotaCelica2.0LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1991Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1991Volvo7802.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1991Volvo9402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1990ToyotaCelica2.0LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1990Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1990Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1990Volvo7802.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1989IsuzuAmigo2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1989IsuzuPickup2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1989Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1989Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1989Volvo7802.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1988IsuzuPickup2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1988Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1988Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1987IsuzuPickup2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1987IsuzuTrooper2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1987Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1987Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1986IsuzuPickup2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1986IsuzuTrooper2.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1986Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1986Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1985Volvo7402.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1985Volvo7452.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1985Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded Coolant Hose
1984Volvo7602.3LL4GASUpperRadiator and HVAC compatible coolant and heater hose.; Molded 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:

1276376127637691276376C0112787608131733413173349133646613787831378783314-2518-616571741301785166D1019501PY30002159122208M300217153514517351451763514629351462993536130513137717109483108316894370521089437079808944338640897C1591KM-2222MH-4591R18121

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