HomeBelts and Cooling > Hoses and PipesDayco 70759 Radiator Coolant Hose - Lower or Upper
Part #: 70759

Dayco 70759 Radiator Coolant Hose - Lower or Upper

Curved Radiator Hose, Upper
11 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, Upper
Fitment: BMW and Chevrolet, 735i, L7, 733i, and Corvette
Easy Returns — Return within 60 days for a full refund
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Overview of Dayco Curved Radiator Hose 70759

The Dayco Curved Radiator Hose 70759 is engineered for reliable cooling system performance in select BMW and Chevrolet vehicles. Designed with durable EPDM material, this radiator coolant hose ensures consistent heat resistance and flexibility for models like the BMW 735i and Chevrolet Corvette.

  • Constructed from high-quality EPDM material for durability and heat resistance
  • Black color with a single inside diameter of 1 3/4 inches on both ends
  • Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height measures 19 1/2 inches for precise fitment
  • Part number 70759 specifically designed for BMW 735i and Chevrolet Corvette

Detailed Product Description

The Dayco Curved Radiator Hose 70759 is a single inside diameter hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. Both ends of the hose have an inside diameter of 1 3/4 inches, ensuring a secure connection within the cooling system. This hose does not include a heat shield or protective sleeve, focusing on straightforward, reliable performance. The trunk height of 19 1/2 inches allows for proper routing and fitment in compatible vehicles.

The Curved Radiator Hose product line by Dayco is designed to meet stringent SAE specifications, including SAE J20R4 Class D-1 and SAE J1684 Type EC, which define performance standards for coolant hoses. This ensures the hose maintains integrity under typical engine operating conditions, making it suitable for use in performance and standard cooling systems.

Compatible Vehicles and Applications

  • Compatible with BMW 735i models requiring a 1 3/4 inch radiator hose
  • Compatible with Chevrolet Corvette models needing a durable curved radiator coolant hose
  • Ideal for replacing worn or damaged radiator coolant hoses in these vehicles
  • Helps prevent coolant leaks and overheating issues related to hose failure
  • Supports maintaining optimal engine temperature and cooling system efficiency

Installation Notes and Tips

  • Ensure the engine is cool before removing the old radiator hose to avoid burns
  • Check hose clamps and replace if worn to secure the new hose properly
  • Verify the hose routing matches the original to prevent kinks or interference
  • Inspect surrounding components for wear or damage during installation
  • Use appropriate coolant compatible with EPDM hoses to extend service life

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70759 to meet SAE standards, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by manufacturer support for defects in materials and workmanship.

BrandDayco
Part Number70759
PositionCurved Radiator Hose, Upper
ColorBlack
End 1 Inside Diameter1 3/4
End 2 Inside Diameter1 3/4
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height19 1/2

This part fits 11 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
1987BMW735iUpperCurved Radiator Hose
1986BMW735iUpperCurved Radiator Hose
1985BMW735iUpperCurved Radiator Hose
1976ChevroletCorvetteLowerEarly; Curved Radiator Hose
1975ChevroletCorvetteLowerCurved Radiator Hose
1974ChevroletCorvette5.7LV8LowerCurved Radiator Hose
1973ChevroletCorvette5.7LV8LowerCurved Radiator Hose
1972ChevroletCorvetteAutomatic5.7LV8LowerCurved Radiator Hose
1971ChevroletCorvette5.7LV8LowerCurved Radiator Hose
1970ChevroletCorvette5.7LV8LowerLate; Curved Radiator Hose
1969ChevroletCorvetteAutomatic5.7LV8LowerCompatible with vehicles containing 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:

24046L

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