Four Seasons 91652 HVAC Heater Core - Front

Overview of Four Seasons Heater Core 91652

The Four Seasons Heater Core 91652 is designed to restore efficient heating performance in select Audi and Volkswagen vehicles. Engineered with copper/brass construction, this heater core meets or exceeds OEM standards to ensure reliable operation and durability.

• Core dimensions: 10-1/2 inches length, 6 inches width, 1-7/8 inches thickness
• Copper core material for effective heat transfer
• Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet
• Compatible with various Audi and Volkswagen models including Quattro variants
• Meets or exceeds original equipment manufacturer specifications

Detailed Product Description

This HVAC heater core from Four Seasons features a copper/brass core that provides efficient heat exchange for vehicle cabin heating systems. The core measures 10.5 inches in height, 6 inches in width, and 1.875 inches in depth, offering a precise fit for compatible vehicles. Both inlet and outlet tubes have a diameter of 0.625 inches, ensuring proper coolant flow. The heater core is designed without adjustable pipe positioning, maintaining OEM-style installation and performance. This part is engineered to fit Audi and Volkswagen models such as the Audi 100, 200, 4000, 5000 Quattro, A6, S4, S6, and V8 Quattro, as well as Volkswagen Quantum and Coupe models.

Four Seasons Heater Core Product Line

The Four Seasons Heater Core product line focuses on delivering replacement heater cores that meet or exceed OEM quality standards. This line emphasizes durable copper/brass construction for effective heat transfer and long service life. The Heater Core line is tailored to provide direct-fit replacements for a range of vehicle makes and models, including the Audi and Volkswagen vehicles compatible with part number 91652.

Common Applications and Issues Addressed

• Restores heating system performance in Audi and Volkswagen Quattro models
• Resolves coolant leaks within the heater core
• Eliminates reduced cabin heat output due to clogged or damaged cores
• Prevents overheating caused by inefficient heat exchange
• Addresses heater core corrosion and deterioration over time

Installation Notes and Tips

• Ensure compatibility with specific Audi and Volkswagen models before installation
• Drain the cooling system prior to heater core removal to avoid coolant spills
• Handle the copper/brass core carefully to prevent damage to tubes and fins
• Replace all associated seals and gaskets during installation for leak-free operation
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

The Four Seasons Heater Core 91652 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes rigorous quality control to maintain consistent standards. Warranty coverage details should be confirmed with the product provider or manufacturer.