HomeBelts and Cooling > Hoses and PipesDayco 70281 Radiator Coolant Hose
Part #: 70281

Dayco 70281 Radiator Coolant Hose

Curved Radiator Hose, Upper, Upper - Engine To Water Pump, Lower, and Lower - Pipe To Engine
19 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$27.06Free 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
Curved Radiator Hose, Upper, Upper - Engine To Water Pump, Lower, and Lower - Pipe To Engine
Fitment: Chevrolet, Chrysler, INFINITI, Jeep, and Nissan, 300, Bel Air, Frontier, Imperial, New Yorker, QX4, and Wagoneer
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dayco Curved Radiator Hose 70281

The Dayco Curved Radiator Hose 70281 is designed to provide reliable coolant flow for select Chevrolet, Chrysler, INFINITI, Jeep, and Nissan vehicles. Engineered with durable EPDM material, this black single inside diameter hose ensures consistent performance in demanding engine cooling systems.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black color with a curved design for precise fitment
  • 1 1/2 inch inside diameter on both ends for uniform coolant flow
  • Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height of 9 3/4 inches for proper routing in engine bays

Detailed Product Description

This Dayco Curved Radiator Hose 70281 is a single inside diameter hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. The hose features a consistent 1 1/2 inch inside diameter on both ends, facilitating smooth coolant circulation. Its curved shape is designed to fit specific engine layouts without kinking or restricting flow. The hose does not include a heat shield or protective sleeve, focusing on straightforward, durable construction. Meeting SAE J20R4 Class D-1 and SAE J1684 Type EC standards, it adheres to industry requirements for radiator coolant hoses.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line offers hoses tailored to fit complex engine configurations where straight hoses are insufficient. This product line emphasizes precise bends and dimensions to ensure proper coolant routing and secure connections. The 70281 part number is part of this line, providing a reliable solution for vehicles requiring a curved hose with specific diameter and length specifications.

Compatible Vehicles and Applications

  • Chevrolet 300 and Bel Air models
  • Chrysler Imperial and New Yorker
  • INFINITI QX4
  • Jeep Wagoneer
  • Nissan Frontier

This hose is suitable for radiator coolant systems in these vehicles, helping maintain optimal engine temperature and preventing overheating.

Common Issues Addressed by This Radiator Hose

  • Coolant leaks due to cracked or worn hoses
  • Restricted coolant flow from collapsed or kinked hoses
  • Overheating caused by improper hose fitment
  • Degradation from heat and chemical exposure
  • Replacement of aged or damaged radiator hoses

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to avoid burns. Verify that the hose diameter and length match the original specifications. Use appropriate clamps to secure the hose ends firmly without over-tightening, which can damage the hose. Inspect surrounding components for wear or damage during installation.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70281 to meet SAE standards, ensuring durability and performance. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by the brand's commitment to automotive reliability.

BrandDayco
Part Number70281
PositionCurved Radiator Hose, Upper, Upper - Engine To Water Pump, Lower, and Lower - Pipe To Engine
MaterialEpdm
ColorBlack
End 1 Inside Diameter1 1/2
End 2 Inside Diameter1 1/2
Contains Heat ShieldN
Contains Protective SleeveN
Hose TypeSingle i.d. hose
SAE SpecificationSae j20r4 class d-1, sae j1684 type ec
Trunk Height9 3/4

This part fits 19 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersFuel TypePositionNotes
2004NissanFrontier3.3LV6Lower - Pipe To EngineCurved Radiator Hose
2003NissanFrontier3.3LV6Lower - Pipe To EngineCurved Radiator Hose
2002NissanFrontier3.3LV6Lower - Pipe To EngineCurved Radiator Hose
2001NissanFrontier3.3LV6Lower - Pipe To EngineCurved Radiator Hose
2000INFINITIQX4Lower - Pipe To EngineCurved Radiator Hose
2000NissanFrontier3.3LV6Lower - Pipe To EngineCurved Radiator Hose
1999NissanFrontier3.3LV6Lower - Pipe To EngineCurved Radiator Hose
1965JeepWagoneerWagon3.8LL6GASUpper - Engine To Water PumpCurved Radiator Hose
1964JeepWagoneerWagon3.8LL6GASUpper - Engine To Water PumpCurved Radiator Hose
1963JeepWagoneerWagon3.8LL6GASUpper - Engine To Water PumpCurved Radiator Hose
1959Chrysler3006.8LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1959Chrysler3006.7LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1959ChryslerImperial6.8LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1959ChryslerImperial6.7LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1959ChryslerNew YorkerUpperFits vehicles without air conditioning.; Curved Radiator Hose
1956ChevroletBel Air3.9LL6UpperCurved Radiator Hose
1956ChevroletBel Air3.8LL6UpperCurved Radiator Hose
1955ChevroletBel Air3.9LL6UpperCurved Radiator Hose
1955ChevroletBel Air3.8LL6UpperCurved Radiator 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:

20120S

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