HomeBelts and Cooling > Hoses and PipesDayco 70943 Radiator Coolant Hose
Part #: 70943

Dayco 70943 Radiator Coolant Hose

Curved Radiator Hose, Lower - Thermostat To Pipe
8 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 - Thermostat To Pipe
Fitment: Nissan and Fiat, Altima, Brava, and 131
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Overview of Dayco Curved Radiator Hose 70943 for Nissan Altima

The Dayco Curved Radiator Hose 70943 is designed specifically for Nissan Altima models, providing reliable coolant flow and engine temperature regulation. Made from durable EPDM material, this radiator coolant hose ensures consistent performance under typical operating conditions.

  • Constructed from EPDM for heat and chemical resistance
  • Black color with a curved design for precise fitment
  • Inside diameter of 1 3/8 inches on both ends
  • Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Single inside diameter hose type with a trunk height of 7 inches
  • Compatible with Nissan Altima radiator cooling systems

Detailed Product Description

The Dayco Curved Radiator Hose 70943 is engineered to maintain optimal coolant circulation within the radiator system of Nissan Altima vehicles. Its EPDM construction offers resistance to heat, ozone, and coolant chemicals, which helps extend the hose's service life. The hose features a consistent 1 3/8 inch inside diameter on both ends, ensuring a secure and leak-free connection. This single inside diameter hose is designed without a heat shield or protective sleeve, suitable for applications where additional protection is not required. The trunk height of 7 inches accommodates the specific routing needs of the Nissan Altima cooling system.

The Curved Radiator Hose product line from Dayco focuses on delivering hoses shaped to fit specific vehicle cooling system layouts, reducing installation complexity and improving coolant flow efficiency. This hose line is manufactured to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming compliance with industry requirements for coolant hoses.

Common Applications and Issues Addressed

  • Replacement of worn or cracked radiator coolant hoses in Nissan Altima models
  • Prevention of coolant leaks that can cause engine overheating
  • Restoration of proper coolant flow to maintain engine temperature
  • Addressing hose swelling or softening due to age or chemical exposure
  • Ensuring secure hose connections to avoid coolant system pressure loss

Installation Notes and Tips

  • Verify compatibility with your specific Nissan Altima model year before installation
  • Inspect hose clamps and replace if corroded or damaged
  • Ensure the hose is routed without kinks or sharp bends to maintain coolant flow
  • Check for proper seating on radiator and engine fittings to prevent leaks
  • Allow engine to cool before removing old hose to avoid burns

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70943 to meet established SAE standards, ensuring durability and performance in Nissan Altima cooling systems. 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 Number70943
PositionCurved Radiator Hose, Lower - Thermostat To Pipe
ColorBlack
End 1 Inside Diameter1 3/8
End 2 Inside Diameter1 3/8
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height7

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2001NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
2000NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
1999NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
1998NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
1996NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
1995NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
1994NissanAltimaLower - Thermostat To PipeCurved Radiator Hose
1993NissanAltimaLower - Thermostat To PipeCurved 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:

20046S

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