Homeβ€Ί Belts and Cooling > Hoses and Pipesβ€Ί Dayco 70344 Radiator Coolant Hose - Lower or Upper
Part #: 70344

Dayco 70344 Radiator Coolant Hose - Lower or Upper

Curved Radiator Hose, Upper
114 vehicles fit this part
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OE Direct Replacement β€” Bolt-on fit, no modifications needed
Curved Radiator Hose, Upper
Fitment: BMW, Mazda, American Motors, Checker, Mercedes-Benz, Jeep, Chevrolet, Dodge, Ford, GMC, Mercury, Lincoln, Chrysler, Plymouth, and DeSoto, 318i, 318is, 318ti, 525i, 525iT, RX-7, AMX, Concord, Spirit, Marathon, 300CD, 300D, 300TD, 240D, Aerobus, Taxicab, Jeepster, Deluxe, Bel Air, Biscayne, Brookwood, Caprice, Impala, Kingswood, Townsman, Camaro, Estate, G10 Van, G20 Van, A100 Truck, Country Sedan, Country Squire, Custom, Custom 500, Galaxie 500, LTD, Ranch Wagon, Thunderbird, G15/G1500 Van, G25/G2500 Van, Marauder, Marquis, D100 Pickup, D200 Pickup, D300 Pickup, W100 Pickup, W200 Pickup, W300 Pickup, Continental, Mark III, Chevelle, El Camino, Malibu, D100 Series, D200 Series, D300 Series, W100 Series, W200 Series, W300 Series, 300, Imperial, New Yorker, Newport, Town & Country, A100, Monaco, Polara, Fury, Fury II, Fury III, Satellite, Corvette, Coronet, P300, C10 Pickup, C20 Pickup, C30 Pickup, K10 Pickup, K20 Pickup, Suburban, Belvedere, Savoy, Saratoga, Royal, Plaza, Windsor, Firesweep, Customline, Fairlane, Mainline, Skyliner, Sunliner, Victoria, Medalist, Montclair, Monterey, and Crestline
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Overview of Dayco Curved Radiator Hose 70344

The Dayco Curved Radiator Hose 70344 is engineered to provide reliable coolant flow for a variety of vehicle makes and models. Designed with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black single inside diameter hose with 1 1/2 inch ends
  • Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards
  • Trunk height measures 19 3/4 inches for precise fitment
  • Compatible with multiple vehicle makes including BMW, Chevrolet, Ford, and more

Detailed Product Description

The Dayco Curved Radiator Hose 70344 is part of the Curved Radiator Hose product line, designed specifically to meet the cooling system requirements of various passenger and light truck vehicles. Made from EPDM (ethylene propylene diene monomer), this hose offers excellent resistance to heat, ozone, and coolant chemicals, which helps maintain durability and flexibility over time. Both ends of the hose have an inside diameter of 1 1/2 inches, making it a single inside diameter hose suitable for direct replacement applications. The hose does not include a heat shield or protective sleeve, focusing on straightforward installation and compatibility.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with a wide range of vehicles, including BMW models such as 318i, 318is, 318ti, 525i, and 525iT; Chevrolet models like Camaro, Caprice, and Impala; Chrysler and Dodge vehicles including 300, 300D, and 300TD; as well as Ford and Lincoln models such as Thunderbird and Continental. It also fits Mazda RX-7, Mercedes-Benz, Mercury, and other makes like Malibu, Marauder, and Town & Country. The part number 70344 ensures precise identification for these applications.

Common Issues Addressed by Dayco Radiator Hose 70344

  • Prevents coolant leaks caused by cracked or worn hoses
  • Maintains proper coolant flow to avoid engine overheating
  • Resists degradation from heat and chemical exposure
  • Replaces hoses with incorrect diameter or length for proper fit
  • Eliminates coolant contamination from hose failure

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70344, ensure the engine is cool to prevent burns or injury. Verify that the hose diameter and length match the original equipment specifications. Use appropriate clamps to secure the hose ends and check for any signs of wear or damage on adjacent components. Since this hose does not include a heat shield or protective sleeve, inspect the surrounding area for potential abrasion points and address as needed.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70344 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, ensuring compliance with industry standards for radiator coolant hoses. This part undergoes rigorous quality control to provide consistent performance and durability. Warranty details are subject to Dayco's standard terms and conditions.

BrandDayco
Part Number70344
PositionCurved Radiator Hose, Upper
ColorBlack
End 1 Inside Diameter1 1/2
End 2 Inside Diameter1 1/2
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height19 3/4

This part fits 114 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1998BMW318iUpperCurved Radiator Hose
1998BMW318isUpperCurved Radiator Hose
1998BMW318tiUpperCurved Radiator Hose
1997BMW318iUpperCurved Radiator Hose
1997BMW318isUpperCurved Radiator Hose
1997BMW318tiUpperCurved Radiator Hose
1996BMW318iUpperCurved Radiator Hose
1996BMW318isUpperCurved Radiator Hose
1996BMW318tiUpperCurved Radiator Hose
1995BMW318iUpperCurved Radiator Hose
1995BMW318isUpperCurved Radiator Hose
1995BMW318tiUpperCurved Radiator Hose
1994BMW318iUpperCurved Radiator Hose
1994BMW318isUpperCurved Radiator Hose
1994BMW525iLowerCurved Radiator Hose
1993BMW318iUpperCurved Radiator Hose
1993BMW318isUpperCurved Radiator Hose
1993BMW525iLowerCurved Radiator Hose
1993BMW525iTLowerCurved Radiator Hose
1992BMW318iUpperCurved Radiator Hose
1992BMW318isUpperCurved Radiator Hose
1992BMW525iLowerCurved Radiator Hose
1991BMW318iUpperCurved Radiator Hose
1991BMW318isUpperCurved Radiator Hose
1985MazdaRX-71.3LR2UpperCurved Radiator Hose
1984MazdaRX-71.3LR2UpperCurved Radiator Hose
1979Mercedes-Benz300DUpperCurved Radiator Hose
1979Mercedes-Benz300TDUpperCurved Radiator Hose
1978Mercedes-Benz300DUpperCurved Radiator Hose
1977Mercedes-Benz300DUpperCurved Radiator Hose
1976Mercedes-Benz300DUpperCompatible with vehicles containing air conditioning.; Curved Radiator Hose
1975Mercedes-Benz300DUpperCompatible with vehicles containing air conditioning.; Curved Radiator Hose
1970ChevroletBel Air7.4LV8UpperCurved Radiator Hose
1970ChevroletCaprice7.4LV8UpperCurved Radiator Hose
1970ChevroletImpala7.4LV8UpperCurved Radiator Hose
1969ChevroletBel Air6.5LV8UpperCurved Radiator Hose
1969ChevroletBel Air7.0LV8UpperCurved Radiator Hose
1969ChevroletCamaro7.0LV8UpperCurved Radiator Hose
1969ChevroletCaprice6.5LV8UpperCurved Radiator Hose
1969ChevroletCaprice7.0LV8UpperCurved Radiator Hose
1969ChevroletImpala6.5LV8UpperCurved Radiator Hose
1969ChevroletImpala7.0LV8UpperCurved Radiator Hose
1969FordLTD7.0LV8UpperCurved Radiator Hose
1969FordThunderbird7.0LV8UpperCurved Radiator Hose
1969GMCG15/G1500 Van5.0LV8Upperw/o Roof A.C.; Curved Radiator Hose
1969GMCG25/G2500 Van5.0LV8Upperw/o Roof A.C.; Curved Radiator Hose
1969MercuryMarauder7.0LV8UpperCurved Radiator Hose
1969MercuryMarquis7.0LV8UpperCurved Radiator Hose
1968ChevroletBel Air6.5LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968ChevroletBel Air7.0LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968ChevroletCaprice6.5LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968ChevroletCaprice7.0LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968ChevroletImpala6.5LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968ChevroletImpala7.0LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1968FordThunderbird6.4LV8UpperCurved Radiator Hose
1968FordThunderbird7.0LV8UpperCurved Radiator Hose
1968GMCG15/G1500 Van5.0LV8UpperCurved Radiator Hose
1968GMCG25/G2500 Van5.0LV8UpperCurved Radiator Hose
1968LincolnContinental7.5LV8UpperCurved Radiator Hose
1968LincolnContinental7.6LV8UpperCurved Radiator Hose
1967ChevroletBel Air4.6LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletBel Air5.3LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletBel Air6.5LV8UpperCurved Radiator Hose
1967ChevroletBel Air7.0LV8UpperCurved Radiator Hose
1967ChevroletCaprice4.6LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletCaprice5.3LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletCaprice6.5LV8UpperCurved Radiator Hose
1967ChevroletCaprice7.0LV8UpperCurved Radiator Hose
1967ChevroletEl Camino4.6LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletEl Camino5.3LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletEl Camino6.5LV8UpperCurved Radiator Hose
1967ChevroletImpala5.4LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletImpala4.6LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletImpala6.5LV8UpperCurved Radiator Hose
1967ChevroletImpala7.0LV8UpperCurved Radiator Hose
1967ChevroletImpala5.3LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletMalibu4.6LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletMalibu5.3LV8Upperw/o A.C., w/A.P.; Curved Radiator Hose
1967ChevroletMalibu6.5LV8UpperCurved Radiator Hose
1967GMCG15/G1500 Van4.6LV8UpperCurved Radiator Hose
1967GMCG25/G2500 Van4.6LV8UpperCurved Radiator Hose
1966ChevroletBel Air6.5LV8Upperw/o A.C., w/o A.P.; Curved Radiator Hose
1966ChevroletBel Air7.0LV8Upperw/o A.C., w/o A.P.; Curved Radiator Hose
1966ChevroletCaprice6.5LV8Upperw/o A.C., w/o A.P.; Curved Radiator Hose
1966ChevroletCaprice7.0LV8Upperw/o A.C., w/o A.P.; Curved Radiator Hose
1966ChevroletImpala6.5LV8Upperw/o A.C., w/o A.P.; Curved Radiator Hose
1966ChevroletImpala7.0LV8Upperw/o A.C., w/o A.P.; Curved Radiator Hose
1966Chrysler3006.3LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1966Chrysler3007.2LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1966ChryslerImperialUpperFits vehicles without air conditioning.; Curved Radiator Hose
1966ChryslerNew YorkerUpperFits vehicles without air conditioning.; Curved Radiator Hose
1966ChryslerNewport6.3LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1966ChryslerNewport7.2LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1966ChryslerTown & Country6.3LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1966DodgeMonaco6.3LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1966DodgeMonaco7.2LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965ChevroletCorvette5.3LV8UpperCurved Radiator Hose
1965Chrysler3006.8LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965Chrysler3006.3LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965Chrysler3006.7LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965ChryslerImperial6.8LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965ChryslerImperial6.7LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965ChryslerNew YorkerUpperFits vehicles without air conditioning.; Curved Radiator Hose
1965ChryslerNewport6.3LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965DodgeMonaco6.7LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1965DodgeMonaco7.0LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1958Chrysler3006.4LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1958ChryslerImperial6.4LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1958ChryslerNew YorkerUpperFits vehicles without air conditioning.; Curved Radiator Hose
1958ChryslerTown & Country6.4LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1957Chrysler3006.4LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1957ChryslerImperial6.4LV8UpperFits vehicles without air conditioning.; Curved Radiator Hose
1957ChryslerNew YorkerUpperFits vehicles without air conditioning.; Curved Radiator Hose
1957ChryslerNewport6.4LV8UpperFits vehicles without air conditioning.; Curved 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:

24008L

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