HomeBelts and Cooling > Hoses and PipesGates 21849 Radiator Coolant Hose - Lower
Part #: 21849

Gates 21849 Radiator Coolant Hose - Lower

Molded Coolant Hose, Lower
18 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Molded Coolant Hose, Lower
Fitment: Chevrolet and GMC, P30 and P3500
Easy Returns — Return within 60 days for a full refund
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Overview of Gates Molded Coolant Hose 21849

The Gates Molded Coolant Hose 21849 is designed specifically for Chevrolet and GMC P30 and P3500 models. Constructed from durable EPDM material, this radiator coolant hose ensures reliable performance in your vehicle's cooling system.

  • Made from high-quality EPDM for heat and chemical resistance
  • Molded design for precise fit and durability
  • Centerline length of 23.4 inches (594 mm)
  • Consistent inside diameter of 1.75 inches (44 mm) on both ends
  • Compatible with Chevrolet and GMC P30 and P3500 models
  • Does not contain a spring or quick connect fittings

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on providing hoses that are pre-formed to exact specifications, ensuring a precise fit and reducing installation time. This product line is engineered to meet the demands of cooling systems in commercial and heavy-duty vehicles, such as the Chevrolet and GMC P30 and P3500. The molded construction helps maintain hose shape and integrity under varying temperature and pressure conditions.

Detailed Product Description

The Gates Molded Coolant Hose 21849 features a molded design that matches the original equipment specifications for Chevrolet and GMC P30 and P3500 vehicles. Its EPDM construction offers resistance to heat, ozone, and coolant chemicals, which helps extend hose life. Both ends of the hose have an inside diameter of 1.75 inches (44 mm), ensuring a secure connection to the radiator and engine components. With a centerline length of 23.4 inches (594 mm), this hose fits precisely within the cooling system layout without the need for modifications. The absence of springs and quick connect fittings simplifies the hose design, focusing on durability and straightforward installation.

Common Applications and Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses in Chevrolet and GMC P30 and P3500
  • Prevention of coolant leaks caused by hose degradation
  • Restoration of proper coolant flow to avoid engine overheating
  • Elimination of hose collapse or deformation under pressure
  • Maintenance of cooling system integrity in heavy-duty vehicles

Installation Notes and Tips

  • Ensure the engine is cool before removing the old hose to prevent burns
  • Check hose clamps and replace if corroded or damaged
  • Verify the hose orientation matches the molded shape for proper fit
  • Inspect connecting ports for debris or damage before installation
  • Tighten clamps securely but avoid over-tightening to prevent hose damage

Quality Assurance and Warranty

Gates Molded Coolant Hose 21849 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction provide resistance to heat, pressure, and chemical exposure typical in automotive cooling systems. While specific warranty details are not provided, Gates products generally come with a limited warranty against defects in material and workmanship when installed according to manufacturer guidelines.

BrandGates
Part Number21849
PositionMolded Coolant Hose, Lower
0
Yes
Branch Quantity0
Centerline Length23.4
Centerline Length594
Contains SpringNo
End 1 Inside Diameter1.75
End 1 Inside Diameter44
End 2 Inside Diameter1.75
End 2 Inside Diameter44
MaterialEPDM
Modular HoseNo
MoldedYes
Number of Quick Connect Fittings0

This part fits 18 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1993ChevroletP307.4LV8GASLowerExc. Cutaway HD; Exc. Motor Home; Molded Coolant Hose
1993GMCP35007.4LV8GASLowerExc. Cutaway HD; Exc. Motor Home; Molded Coolant Hose
1992ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1992GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1991ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1991GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1990ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1990GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1989ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1989GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1988ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1988GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1987ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1987GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1986ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1986GMCP35007.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1985ChevroletP307.4LV8GASLowerExc. Motor Home; Molded Coolant Hose
1985GMCP35007.4LV8GASLowerExc. Motor Home; 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:

140424692184924253L61708715538539D71553KM-2337

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