HomeBelts and Cooling > Hoses and PipesDayco 71011 Radiator Coolant Hose - Lower, Upper or Upper - Pipe To Radiator
Part #: 71011

Dayco 71011 Radiator Coolant Hose - Lower, Upper or Upper - Pipe To Radiator

Curved Radiator Hose, Lower
35 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Curved Radiator Hose, Lower
Fitment: Jeep, American Motors, Mazda, BMW, Dodge, Peugeot, Plymouth, Fiat, Jaguar, and Buick, CJ7, Scrambler, CJ5, DJ5, Hornet, RX-3, Gremlin, CJ6, Javelin, 3.0CS, 3.0CSi, 3.0S, Bavaria, Matador, D100 Pickup, D200 Pickup, D300 Pickup, W100 Pickup, W200 Pickup, W300 Pickup, 504, Dart, Valiant, D100 Series, D200 Series, W100 Series, W200 Series, 1100, 1500, XKE, Ambassador, American, Classic, Marlin, 1100D, 1200, Special, Super, and Roadmaster
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Overview of Dayco Curved Radiator Hose 71011

The Dayco Curved Radiator Hose 71011 is designed for reliable coolant flow in select Buick, Dodge, and Jeep vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and efficient heat resistance for models like the Jeep CJ5, CJ7, Dodge Dart, and Buick Roadmaster.

  • Constructed from high-quality EPDM material for heat and chemical resistance
  • Dual inside diameters: 1 1/2 inch and 1 3/4 inch ends for precise fitment
  • Black color for standard OEM appearance
  • Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height of 13 inches for proper routing in compatible vehicles
  • Designed without heat shield or protective sleeve for direct coolant hose application

Detailed Product Description

The Dayco Curved Radiator Hose 71011 is a dual inside diameter radiator coolant hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features a 1 1/2 inch inside diameter on one end and a 1 3/4 inch inside diameter on the other, allowing it to connect different sized fittings securely. Its 13-inch trunk height accommodates the specific routing requirements of certain Buick, Dodge, and Jeep models, including the Jeep CJ5 and CJ7, Dodge Dart, and Buick Roadmaster. The hose is black in color, matching OEM standards for radiator hoses.

The Curved Radiator Hose product line from Dayco focuses on providing hoses with precise bends and dual diameter ends to fit specific vehicle cooling systems. This line is engineered to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compatibility with factory coolant systems and durability under typical operating conditions.

Common Applications and Problem Solving

  • Replacement of worn or cracked radiator coolant hoses in Buick Roadmaster and Dodge Dart vehicles
  • Addressing coolant leaks caused by hose degradation in Jeep CJ5 and CJ7 models
  • Ensuring proper coolant flow and preventing overheating due to hose collapse or swelling
  • Maintaining OEM fitment with dual inside diameter ends for secure connections
  • Restoring cooling system integrity after damage from heat or chemical exposure

Installation Notes and Tips

  • Verify hose dimensions and fitment with your vehicle’s specifications before installation
  • Ensure both hose ends are securely clamped to prevent coolant leaks
  • Inspect surrounding components for wear or damage during replacement
  • Replace coolant and bleed the system as recommended after hose installation
  • Do not use a heat shield or protective sleeve as this hose is designed without them

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71011 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring reliable performance in compatible Buick, Dodge, and Jeep vehicles. The EPDM material provides resistance to heat and coolant chemicals, contributing to the hose’s durability. Warranty information should be confirmed with the original equipment manufacturer or distributor, as it may vary by source.

BrandDayco
Part Number71011
PositionCurved Radiator Hose, Lower
ColorBlack
End 1 Inside Diameter1 1/2
End 2 Inside Diameter1 3/4
Hose TypeDual I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height13

This part fits 35 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1986JeepCJ74.2LL6LowerCurved Radiator Hose
1985JeepCJ74.2LL6LowerCurved Radiator Hose
1985JeepScrambler4.2LL6LowerCurved Radiator Hose
1984JeepCJ74.2LL6LowerRadiator Coolant Hose for H.D. vehicles.; Curved Radiator Hose
1984JeepScrambler4.2LL6LowerRadiator Coolant Hose for H.D. vehicles.; Curved Radiator Hose
1983JeepCJ54.2LL6LowerCurved Radiator Hose
1983JeepCJ74.2LL6LowerCurved Radiator Hose
1983JeepScrambler4.2LL6LowerCurved Radiator Hose
1982JeepCJ54.2LL6LowerCurved Radiator Hose
1982JeepCJ74.2LL6LowerCurved Radiator Hose
1982JeepScrambler4.2LL6LowerCurved Radiator Hose
1981JeepCJ54.2LL6LowerCurved Radiator Hose
1981JeepCJ74.2LL6LowerCurved Radiator Hose
1981JeepScrambler4.2LL6LowerRadiator Coolant Hose for H.D. vehicles.; Curved Radiator Hose
1981JeepScrambler4.2LL6Lowerw/o H.D. Cool; Curved Radiator Hose
1980JeepCJ54.2LL6LowerFits vehicles without air conditioning.; Curved Radiator Hose
1980JeepCJ74.2LL6LowerFits vehicles without air conditioning.; Curved Radiator Hose
1979JeepCJ54.2LL6LowerCurved Radiator Hose
1979JeepCJ74.2LL6LowerCurved Radiator Hose
1978JeepCJ53.8LL6LowerCurved Radiator Hose
1978JeepCJ54.2LL6LowerCurved Radiator Hose
1978JeepCJ73.8LL6LowerCurved Radiator Hose
1978JeepCJ74.2LL6LowerCurved Radiator Hose
1977JeepCJ53.8LL6LowerCurved Radiator Hose
1977JeepCJ54.2LL6LowerCurved Radiator Hose
1977JeepCJ73.8LL6LowerCurved Radiator Hose
1977JeepCJ74.2LL6LowerCurved Radiator Hose
1976JeepCJ53.8LL6LowerCurved Radiator Hose
1976JeepCJ54.2LL6LowerCurved Radiator Hose
1976JeepCJ73.8LL6LowerCurved Radiator Hose
1976JeepCJ74.2LL6LowerCurved Radiator Hose
1975JeepCJ53.8LL6LowerCurved Radiator Hose
1975JeepCJ54.2LL6LowerCurved Radiator Hose
1969DodgeDart2.8LL6UpperFits vehicles without air conditioning.; Curved Radiator Hose
1951BuickRoadmasterUpperCurved 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:

20000S20019S

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