Dayco 88403 HVAC Heater Hose

Reliable HVAC Heater Hose for Acura, Ford, INFINITI, Nissan, and Suzuki

The Dayco Small I.D. Heater Hose 88403 is engineered to meet the demanding requirements of HVAC systems in vehicles like the Ford Mustang, Nissan Pathfinder, INFINITI QX4, Acura TL, and Suzuki Verona. Designed with durability and precise fitment in mind, this hose ensures efficient heater core performance and long-lasting service.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Black color with a protective sleeve for added durability
• Consistent 3/4 inch inside diameter on both ends for secure connections
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Single inside diameter hose type optimized for HVAC heater applications
• Trunk height of 10 inches for proper routing and fitment

About the Dayco Small I.D. Heater Hose Product Line

The Small I.D. Heater Hose line by Dayco focuses on delivering hoses with smaller inside diameters tailored for specific HVAC applications. This product line emphasizes material quality and compliance with SAE standards to ensure compatibility and reliability in various vehicle models. The 88403 hose exemplifies these qualities with its EPDM construction and protective sleeve, making it suitable for precise heater core connections in select Acura, Ford, INFINITI, Nissan, and Suzuki vehicles.

Detailed Product Description

The Dayco 88403 heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. Its black color and protective sleeve enhance durability against abrasion and environmental factors. Both ends feature a 3/4 inch inside diameter, ensuring a consistent and secure fit for HVAC systems requiring a single inside diameter hose. The hose complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for heater and coolant applications. With a trunk height of 10 inches, it is designed to fit the routing requirements of vehicles such as the Ford Mustang and Nissan Pathfinder.

Common Applications and Issues Addressed

• Replacement of worn or cracked heater hoses in Acura TL and INFINITI QX4 HVAC systems
• Resolving coolant leaks caused by deteriorated hoses in Nissan Pathfinder and Suzuki Verona
• Maintaining proper heater core function by ensuring secure hose connections in Ford Mustang
• Preventing overheating issues related to compromised heater hoses
• Upgrading OEM hoses with a durable EPDM hose for extended service life

Installation Notes and Tips

Ensure the vehicle’s engine is cool before beginning installation to avoid burns from hot coolant. Verify that the hose length and inside diameter match the original equipment specifications. Use appropriate clamps to secure the hose ends firmly without over-tightening, which can damage the hose. Inspect surrounding components for wear or damage during replacement to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Dayco manufactures the 88403 Small I.D. Heater Hose to meet strict SAE specifications, ensuring reliable performance in HVAC applications. The EPDM material and protective sleeve contribute to the hose’s durability and resistance to heat and chemicals. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and reliability.