HomeBelts and Cooling > Hoses and PipesDayco 70670 Radiator Coolant Hose - Lower or Upper
Part #: 70670

Dayco 70670 Radiator Coolant Hose - Lower or Upper

Curved Radiator Hose, Upper
27 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, Jeep, Ford, Chevrolet, and GMC, 525i, 525iT, J10, Grand Wagoneer, Cherokee, Wagoneer, Courier, C10 Pickup, C20 Pickup, C30 Pickup, K10 Pickup, K20 Pickup, Suburban, 1000, 1500, 2500, 3000, 3500, I1000, I1500, I2500, I3500, P10 Series, P20 Series, and P30 Series
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Overview of Dayco Curved Radiator Hose 70670

The Dayco Curved Radiator Hose 70670 is designed to provide reliable coolant flow for select BMW, Ford, and Jeep vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance under typical operating conditions.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black color with a curved design for precise fitment
  • Inside diameter of 1 9/16 inches on both ends
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Single inside diameter hose without heat shield or protective sleeve
  • Trunk height dimension of 14 inches

Detailed Product Description

This Dayco Curved Radiator Hose 70670 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 9/16 inch inside diameter on both ends, ensuring a secure connection to the radiator and engine components. Its black color and curved shape are designed to match the original equipment specifications for proper routing and fitment.

Complying with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, this hose meets industry requirements for durability and performance in automotive cooling systems. The absence of a heat shield or protective sleeve indicates it is intended for applications where additional protection is not necessary.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with various BMW, Ford, and Jeep models, including BMW 525i and 525iT, Ford Courier, and Jeep Cherokee, Grand Wagoneer, J10, and Wagoneer. 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 hoses
  • Prevents coolant loss and overheating issues
  • Restores proper coolant circulation in the radiator system
  • Addresses hose swelling or softening due to age or heat exposure
  • Ensures secure connections to radiator and engine fittings

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70670, ensure the engine is cool to avoid burns from hot coolant. Verify that the hose routing matches the original configuration to prevent kinks or interference with other engine components. Use appropriate clamps to secure the hose ends firmly, and inspect all connections for leaks after installation.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70670 to meet strict SAE specifications, ensuring reliable performance in automotive cooling systems. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and durability.

BrandDayco
Part Number70670
PositionCurved Radiator Hose, Upper
ColorBlack
End 1 Inside Diameter1 9/16
End 2 Inside Diameter1 9/16
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height14

This part fits 27 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995BMW525iUpperCurved Radiator Hose
1994BMW525iUpperCurved Radiator Hose
1993BMW525iUpperCurved Radiator Hose
1993BMW525iTUpperCurved Radiator Hose
1992BMW525iUpperCurved Radiator Hose
1991BMW525iUpperCurved Radiator Hose
1987JeepJ104.2LL6UpperCurved Radiator Hose
1986JeepGrand Wagoneer4.2LL6UpperCurved Radiator Hose
1986JeepJ104.2LL6UpperCurved Radiator Hose
1985JeepGrand Wagoneer4.2LL6UpperCurved Radiator Hose
1985JeepJ104.2LL6UpperExc. Calif.; Curved Radiator Hose
1984JeepGrand Wagoneer4.2LL6UpperCurved Radiator Hose
1984JeepJ104.2LL6UpperCurved Radiator Hose
1983JeepCherokee4.2LL6UpperCurved Radiator Hose
1983JeepJ104.2LL6UpperCurved Radiator Hose
1983JeepWagoneer4.2LL6UpperCurved Radiator Hose
1982JeepCherokee4.2LL6UpperCurved Radiator Hose
1982JeepJ104.2LL6UpperCurved Radiator Hose
1982JeepWagoneer4.2LL6UpperCurved Radiator Hose
1981JeepCherokee4.2LL6UpperCurved Radiator Hose
1981JeepJ104.2LL6UpperCurved Radiator Hose
1981JeepWagoneer4.2LL6UpperCurved Radiator Hose
1976FordCourierLowerCurved Radiator Hose
1975FordCourierLowerCurved Radiator Hose
1974FordCourier1.8LL4LowerCurved Radiator Hose
1973FordCourier1.8LL4LowerCurved Radiator Hose
1972FordCourier1.8LL4LowerCurved 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:

5362698J5362698

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