HomeBelts and Cooling > Hoses and PipesDayco 70641 Radiator Coolant Hose
Part #: 70641

Dayco 70641 Radiator Coolant Hose

Curved Radiator Hose, Upper
⚙️ 62 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Curved Radiator Hose, Upper
🚗Fitment: Acura, Eagle, Mitsubishi, Toyota, Dodge, Plymouth, Ford, Mercury, Mazda, Chevrolet, Sunbeam, and Hillman, TL, Summit, Mirage, MR2, Vigor, Colt, Celica, Pinto, Bobcat, 808, LUV, Luv Pickup, Bronco, Maverick, Mustang II, Comet, Falcon, Mustang, Fairlane, Ranchero, Torino, Montego, Club Wagon, Econoline, P-100, P-350, Caliente, Villager, Voyager, Crown, Ranch Wagon, Meteor, Rapier, Husky, Minx, and Super Minx
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Overview of Dayco Curved Radiator Hose 70641

The Dayco Curved Radiator Hose 70641 is designed to provide reliable coolant flow for a variety of vehicles including Acura, Chevrolet, Dodge, Ford, Mercury, Mitsubishi, and Toyota models. Engineered with durable EPDM material, this black single inside diameter hose ensures consistent performance in demanding cooling system applications.

  • Constructed from high-quality EPDM material for heat and chemical resistance
  • Black color with a curved design for precise fitment
  • Both ends have a 1 1/4 inch inside diameter for uniform connection
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height of 11 inches for proper routing in engine compartments
  • Single inside diameter hose type for straightforward installation

Detailed Product Description

The Dayco Curved Radiator Hose 70641 is part of the Curved Radiator Hose product line, which focuses on delivering hoses shaped to fit specific engine layouts and cooling system designs. This hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in automotive cooling systems. The hose’s black color and curved shape allow it to fit neatly within the engine bay without kinking or interfering with other components. Both ends feature a consistent 1 1/4 inch inside diameter, ensuring a secure and leak-free connection to radiator and engine fittings. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for coolant applications in various vehicles.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with multiple makes and models, including Acura TL, Chevrolet Bobcat, Dodge Colt, Ford Bronco, Mercury Montego, Mitsubishi Mirage, and Toyota Celica, MR2, LUV, Mustang, Pinto, and Villager. It is designed to replace worn or damaged radiator hoses in these vehicles, maintaining proper coolant flow and engine temperature regulation.

  • Replaces cracked or leaking radiator coolant hoses
  • Prevents overheating caused by coolant loss
  • Eliminates hose collapse or kinking issues
  • Restores proper coolant circulation in the radiator system
  • Addresses hose swelling or softening due to age or heat exposure

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70641, ensure the engine is cool before removal of the old hose to avoid burns. Verify that the hose diameter matches the radiator and engine fittings. Use appropriate clamps to secure both ends and check for leaks after installation. The curved design should align with the original hose routing to prevent stress or interference with other engine components.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70641 to meet strict SAE specifications, ensuring durability and performance under typical automotive operating conditions. While specific warranty details are not provided, Dayco products generally adhere to industry standards for quality and reliability, making this hose a dependable choice for radiator coolant system maintenance.

BrandDayco
Part Number70641
PositionCurved Radiator Hose, Upper
ColorBlack
End 1 Inside Diameter1 1/4
End 2 Inside Diameter1 1/4
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height11

This part fits 62 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1998AcuraTL2.5LL5UpperCurved Radiator Hose
1997AcuraTL2.5LL5UpperCurved Radiator Hose
1996AcuraTL2.5LL5UpperCurved Radiator Hose
1996MitsubishiMirage1.8LL4UpperCurved Radiator Hose
1995AcuraTLUpperCurved Radiator Hose
1995MitsubishiMirage1.8LL4UpperCurved Radiator Hose
1995ToyotaMR22.2LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1994DodgeColt1.8LL4UpperCurved Radiator Hose
1994MitsubishiMirage1.8LL4UpperCurved Radiator Hose
1994ToyotaMR22.2LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1993DodgeColt1.8LL4UpperCurved Radiator Hose
1993MitsubishiMirage1.8LL4UpperCurved Radiator Hose
1993ToyotaCelica2.0LL4Lower - Pipe To EngineCurved Radiator Hose
1993ToyotaMR22.2LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1993ToyotaMR22.0LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1992ToyotaCelica2.0LL4Lower - Pipe To EngineCurved Radiator Hose
1992ToyotaMR22.2LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1992ToyotaMR22.0LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1991ToyotaCelica2.0LL4Lower - Pipe To EngineCurved Radiator Hose
1991ToyotaMR22.2LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1991ToyotaMR22.0LL4Upper - Pipe To Pipe (Front)Curved Radiator Hose
1990ToyotaCelica2.0LL4Lower - Pipe To EngineCurved Radiator Hose
1979FordPinto2.8LV6LowerCurved Radiator Hose
1979MercuryBobcat2.8LV6LowerCurved Radiator Hose
1978FordPinto2.8LV6LowerCurved Radiator Hose
1978MercuryBobcat2.8LV6LowerCurved Radiator Hose
1977FordPinto2.8LV6LowerCompatible with vehicles containing air conditioning.; Curved Radiator Hose
1977FordPinto2.8LV6LowerFits vehicles without air conditioning.; Curved Radiator Hose
1977MercuryBobcat2.8LV6LowerCompatible with vehicles containing air conditioning.; Curved Radiator Hose
1977MercuryBobcat2.8LV6LowerFits vehicles without air conditioning.; Curved Radiator Hose
1976FordPinto2.8LV6LowerCurved Radiator Hose
1976MercuryBobcat2.8LV6LowerCurved Radiator Hose
1975ChevroletLUVUpperCurved Radiator Hose
1975FordPinto2.8LV6LowerCurved Radiator Hose
1975MercuryBobcat2.8LV6LowerCurved Radiator Hose
1974FordBronco3.3LL6UpperCurved Radiator Hose
1973FordBronco3.3LL6UpperCurved Radiator Hose
1972FordBronco2.8LL6UpperCurved Radiator Hose
1971FordBronco2.8LL6UpperCurved Radiator Hose
1970FordBronco2.8LL6UpperCurved Radiator Hose
1970FordMustang3.3LL6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1969FordBronco2.8LL6UpperCurved Radiator Hose
1969FordMustang3.3LL6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968FordBronco2.8LL6UpperCurved Radiator Hose
1968FordMustang3.3LL6UpperCurved Radiator Hose
1968MercuryMontego3.3LL6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1967FordBronco2.8LL6UpperCurved Radiator Hose
1967FordEconoline2.8LL6Upperw/o A.P.; Curved Radiator Hose
1967FordEconoline3.9LL6N/Aw/A.P., w/4 Spd. Trans.; Curved Radiator Hose
1967MercuryVillager3.3LL6UpperCurved Radiator Hose
1966FordBronco2.8LL6UpperCurved Radiator Hose
1966FordEconoline2.8LL6UpperCurved Radiator Hose
1966MercuryVillager3.3LL6UpperCurved Radiator Hose
1965FordEconoline2.8LL6Upperw/4 Spd. Trans.; Curved Radiator Hose
1965FordEconoline2.8LL6Upperw/M.T.; Curved Radiator Hose
1964FordEconoline2.4LL6Upperw/M.T.; Curved Radiator Hose
1964FordEconoline2.8LL6UpperCurved Radiator Hose
1963FordEconoline2.4LL6UpperCurved Radiator Hose
1963FordEconoline2.8LL6UpperCurved Radiator Hose
1962FordEconoline2.4LL6UpperCurved Radiator Hose
1962FordEconoline2.8LL6UpperCurved Radiator Hose
1961FordEconolineUpperCurved 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:

142-2674

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