Four Seasons 90050 HVAC Heater Core - Front

Reliable Heater Core Replacement for GM Trucks and SUVs

The Four Seasons Heater Core 90050 is designed to restore efficient heating performance in select Cadillac, Chevrolet, GMC, and Hummer vehicles. Engineered with durable aluminum construction, this heater core ensures consistent cabin warmth and reliable operation for models like the Chevrolet Silverado and GMC Sierra.

• Core dimensions: 8-1/4" length, 7-1/2" width, 1-1/4" thickness
• Constructed from corrosion-resistant aluminum material
• Meets or exceeds OEM specifications for quality and fit
• Compatible with multiple GM models including Avalanche, Escalade, Sierra, Silverado, Suburban, Tahoe, Yukon, and Hummer H2
• Standard 3/4" (19.05 mm) inlet and outlet tubes for direct replacement

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering reliable HVAC components that meet or exceed original equipment manufacturer standards. This aluminum heater core model 90050 is part of that line, offering a balance of durability and efficient heat transfer. The product line emphasizes precise fitment and long-lasting performance for a range of GM trucks and SUVs.

Product Details and Specifications

This heater core features an aluminum core measuring 8.25 inches in height, 7.5 inches in width, and 1.25 inches in depth. The core’s aluminum construction provides resistance to corrosion and efficient heat exchange, essential for maintaining comfortable cabin temperatures. The inlet and outlet tubes are both 0.75 inches (19.05 mm) in diameter, matching OEM dimensions for straightforward installation. Note that this model does not include adjustable pipe positioning, ensuring a direct OEM-style fit.

Common Applications and Issues Addressed

• Restores heating function in Cadillac Escalade and Escalade ESV models
• Replaces leaking or clogged heater cores in Chevrolet Silverado 1500 and 2500 series
• Solves insufficient cabin heat problems in GMC Sierra 3500 and Yukon XL vehicles
• Eliminates coolant leaks inside the passenger compartment
• Prevents engine overheating caused by heater core blockages

Installation Notes and Tips

• Ensure compatibility with your specific make and model before installation
• Drain the cooling system prior to heater core removal to avoid spills
• Handle the aluminum core carefully to prevent damage to fins and tubes
• Replace all associated seals and hoses to maintain system integrity
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

The Four Seasons Heater Core 90050 meets or exceeds OEM standards, providing reliable performance for your vehicle’s heating system. Manufactured with corrosion-resistant aluminum, this heater core is built for durability. While specific warranty details may vary, Four Seasons products typically include a limited warranty against defects in materials and workmanship to ensure customer confidence.