Dayco 87963 HVAC Heater Hose - Pipe To Exhaust Gas Recirculation Cooler or Pipe To Heater

Overview of Dayco Small I.D. Heater Hose 87963

The Dayco Small I.D. Heater Hose 87963 is designed for reliable HVAC system performance in select Lexus and Toyota vehicles. Engineered with durable EPDM material, this black heater hose ensures consistent heat transfer and fluid flow for your vehicle's heating system.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black color for standard OEM appearance
• 5/8 inch inside diameter on both ends for precise fitment
• 31/32 inch outside diameter on both ends
• Complies with SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Single I.D. hose type for streamlined installation
• Trunk height of 10 1/4 inches

Detailed Product Description

This Dayco Small I.D. Heater Hose 87963 is manufactured to meet strict SAE standards, including SAE J20R3 Class D-1 and SAE J1684 Type EC, ensuring compatibility and durability in automotive HVAC systems. The hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids, making it suitable for continuous exposure to engine heat and coolant. Both ends of the hose have a 5/8 inch inside diameter and a 31/32 inch outside diameter, providing a secure and leak-resistant connection. The hose is black and does not include a heat shield or protective sleeve, consistent with many OEM specifications.

The Small I.D. Heater Hose product line by Dayco focuses on delivering precise fitment and reliable performance for smaller diameter heater hoses used in vehicle HVAC systems. This line is engineered to meet or exceed OEM requirements, providing a dependable replacement option for maintaining proper heating function in compatible vehicles.

Compatible Vehicles and Applications

This heater hose is compatible with the following makes and models:

• Lexus CT200h
• Toyota Prius
• Toyota Prius Plug-In
• Toyota Prius V

It is designed specifically for HVAC heater hose replacement in these hybrid models, ensuring proper fit and function within the heating system.

Common Issues Addressed by Dayco Heater Hose 87963

• Leaking or cracked heater hoses causing coolant loss
• Reduced heating efficiency due to deteriorated hose material
• Swelling or softening of hoses from heat exposure
• Incompatibility or improper fit with OEM HVAC components
• Premature hose failure from chemical degradation

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 87963, ensure the hose is routed correctly to avoid kinks or sharp bends that could restrict coolant flow. Verify that the 5/8 inch inside diameter matches the vehicle’s heater core and engine connections. Use appropriate clamps to secure the hose ends firmly, preventing leaks. Inspect surrounding components for wear or damage during replacement to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Dayco manufactures this heater hose to meet SAE specifications, ensuring consistent quality and performance. The EPDM material provides resistance to heat and automotive fluids, contributing to long service life. Warranty details are subject to Dayco’s standard policies; please refer to official documentation for specific coverage information.