HomeBelts and Cooling > Hoses and PipesDayco 70878 Radiator Coolant Hose - Lower - Radiator To Pipe
Part #: 70878

Dayco 70878 Radiator Coolant Hose - Lower - Radiator To Pipe

Lower - Radiator To Pipe
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$47.25Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dayco Curved Radiator Hose 70878

The Dayco Curved Radiator Hose 70878 is designed to provide reliable coolant flow in automotive cooling systems. Constructed from durable EPDM material, this black radiator coolant hose ensures consistent performance under various operating conditions.

  • Made from high-quality EPDM material for heat and chemical resistance
  • Black color with a curved design for precise fitment
  • Both ends have an inside diameter of 2 3/4 inches
  • Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Single inside diameter hose type with a trunk height of 16 1/4 inches

Detailed Product Description

The Dayco Curved Radiator Hose line is engineered to meet stringent automotive cooling requirements. This particular hose, part number 70878, features a curved design that facilitates installation in tight engine compartments where straight hoses may not fit properly. Manufactured from EPDM (ethylene propylene diene monomer) rubber, it offers excellent resistance to heat, ozone, and coolant chemicals, making it suitable for long-term use in vehicle cooling systems.

With an inside diameter of 2 3/4 inches on both ends, this single i.d. hose ensures a secure and leak-free connection between radiator components. The hose meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its compliance with industry requirements for coolant hoses. The trunk height of 16 1/4 inches allows for proper routing and fitment in compatible vehicles.

Common Applications and Problem Solving

  • Replacement for worn or cracked radiator coolant hoses in compatible vehicles
  • Addresses coolant leaks caused by hose degradation or damage
  • Prevents overheating issues related to compromised coolant flow
  • Suitable for vehicles requiring a curved radiator hose with 2 3/4 inch diameter ends
  • Helps maintain optimal engine temperature by ensuring proper coolant circulation

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70878, ensure the hose is routed without kinks or sharp bends that could restrict coolant flow. Verify that the 2 3/4 inch inside diameter matches the radiator and engine fittings for a secure connection. Use appropriate clamps to prevent leaks and check for clearance around other engine components. It is recommended to inspect the cooling system for any additional wear or damage during replacement.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70878 to meet SAE specifications, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically adhere to industry standards for performance and reliability. Using this hose helps maintain the integrity of the vehicle's cooling system and supports long-term engine health.

BrandDayco
Part Number70878
MaterialEpdm
ColorBlack
End 1 Inside Diameter2 3/4
End 2 Inside Diameter2 3/4
Contains Heat ShieldN
Contains Protective SleeveN
Hose TypeSingle i.d. hose
SAE SpecificationSae j20r4 class d-1, sae j1684 type ec
Trunk Height16 1/4

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* 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:

20178S22100M24022L

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