Four Seasons 91662 HVAC Heater Core - Front

Reliable Heater Core Replacement for Toyota 4Runner and Pickup

The Four Seasons Heater Core 91662 is designed specifically for Toyota 4Runner and Pickup models, providing efficient heating performance and durability. Crafted from aluminum, this heater core ensures effective heat transfer and long-lasting operation.

• Core dimensions: 8-1/2 inches length, 5-3/4 inches width, 1-1/4 inches thickness
• Constructed from lightweight, corrosion-resistant aluminum
• Specific fit for Toyota 4Runner and Pickup vehicles
• Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet
• Meets or exceeds OEM specifications for reliable performance

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on delivering precise fit and dependable heating components for various vehicle makes and models. The 91662 part number is part of this line, engineered to match OEM standards and provide consistent cabin heating through efficient aluminum core construction.

Detailed Product Description

This HVAC heater core features an aluminum core measuring 8.5 inches in height, 5.75 inches in width, and 1.25 inches in depth. The aluminum material offers excellent thermal conductivity and resistance to corrosion, which helps maintain optimal heating performance over time. The heater core includes two tubes, each with a diameter of 0.625 inches (15.875 mm), designed for secure coolant flow. This specific fit heater core is engineered for Toyota 4Runner and Pickup models, ensuring proper installation and compatibility without the need for adjustable pipe positioning.

Common Applications and Issues Addressed

• Restores heating functionality in Toyota 4Runner and Pickup vehicles
• Resolves coolant leaks within the heater core assembly
• Eliminates reduced cabin heat output due to clogged or damaged cores
• Prevents overheating caused by inefficient heat exchange
• Replaces corroded or deteriorated OEM heater cores

Installation Notes and Tips

When installing the Four Seasons Heater Core 91662, ensure compatibility with your Toyota 4Runner or Pickup model year. The heater core is a direct replacement part with no adjustable pipe positioning, so proper alignment of inlet and outlet tubes is essential. It is recommended to flush the cooling system before installation to prevent contamination and ensure optimal performance.

Quality Assurance and Warranty

The Four Seasons Heater Core 91662 meets or exceeds OEM specifications, providing reliable heating performance and durability. Manufactured with high-quality aluminum, this heater core is built to withstand corrosion and wear. Please refer to Four Seasons' warranty policy for specific coverage details.