Four Seasons 96118 HVAC Heater Core

Four Seasons 96118 Heater Core

Four Seasons 96118 is an aluminum HVAC heater core built for dependable cabin heat transfer and consistent operation. With a 10.81 in core height, 10 in core width, and 2.5 in core depth, it is sized for applications that use a compact aluminum heater core design.

Four Seasons Heater Core products are backed by more than 50 years of mobile A/C experience and are engineered and tested for long service life. If you are replacing a leaking or restricted heater core in a vehicle such as a Ford F-150 or Chevrolet Silverado, this part number 96118 is a direct replacement option to verify against your original unit.

Key Features

• Aluminum heater core construction for HVAC heat exchange
• Core dimensions: 10.81 in height, 10 in width, 2.5 in depth
• Tube size: 0.625 in / 15.88 mm on both connections
• Designed for heater core replacement in automotive HVAC systems
• Four Seasons part number 96118 for catalog matching and cross-reference use

Product Details

This HVAC heater core is part of the Four Seasons Heater Core line, a product family focused on replacement heating components for mobile climate control systems. The aluminum core design supports efficient coolant-to-air heat transfer inside the heater box, helping restore proper defrost and cabin heat performance. Cross-reference part numbers include Gates 6956 and Spectra Premium 99431 for the same application.

Use Four Seasons 96118 when the original heater core shows signs of internal leakage, reduced heat output, or flow restriction. It is a practical replacement for drivers searching for a heater core for Ford F-150 or Chevrolet Silverado HVAC repair, especially when matching dimensions and tube size are critical.

Common Issues This Part Can Address

• Coolant odor inside the cabin from a leaking heater core
• Weak or uneven heat from the vents
• Defrost performance problems caused by poor heater output
• Restricted coolant flow through the HVAC heater circuit
• Moisture or fogging related to heater core leakage

Installation Notes and Tips

Verify core height, width, depth, and tube diameter against the removed unit before installation. Confirm hose routing, inlet and outlet orientation, and heater box clearance during replacement. Because heater core access often requires HVAC case disassembly, inspect related seals, hoses, and coolant condition while the system is open.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, drawing on more than 50 years of mobile air conditioning experience. Part number 96118 is built to meet replacement needs for automotive HVAC service with a focus on fit, function, and durability.