Four Seasons 91512 HVAC Heater Core

Reliable Heater Core Replacement for Buick and Oldsmobile Models

The Four Seasons Heater Core 91512 is designed to restore efficient heating performance in select Buick and Oldsmobile vehicles. Engineered with durable copper and brass materials, this heater core ensures consistent heat transfer and long-lasting operation for your HVAC system.

• Core dimensions: 8 inches length, 8-5/8 inches width, 2 inches thickness
• Constructed from copper/brass for enhanced thermal conductivity
• Core depth and height precisely 2.000 inches and 8.000 inches respectively
• Tube sizes: 0.625 inch (15.875 mm) and 0.750 inch (19.050 mm)
• Meets or exceeds OEM specifications for reliable fit and function
• Compatible with Buick 98, Delta 88, and LeSabre models

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering replacement cores that meet or exceed original equipment manufacturer standards. This product line emphasizes quality materials such as copper and brass to provide efficient heat transfer and durability. The 91512 heater core is part of this line, offering a direct-fit solution for specific Buick and Oldsmobile vehicles requiring dependable HVAC performance.

Product Details and Specifications

This HVAC heater core features a copper/brass construction that supports effective heat exchange within the vehicle’s heating system. The core measures 8 inches in length, 8-5/8 inches in width, and 2 inches in thickness, with a core depth and height of 2.000 and 8.000 inches respectively. The two inlet tubes measure 0.625 inch (15.875 mm) and 0.750 inch (19.050 mm), designed to match OEM configurations. The heater core does not include adjustable pipe positioning, ensuring a straightforward replacement process.

Common Applications and Issues Addressed

• Restores heating efficiency in Buick 98, Delta 88, and LeSabre models
• Resolves insufficient cabin heat due to clogged or leaking heater cores
• Eliminates coolant leaks inside the vehicle’s HVAC system
• Prevents fogging and moisture buildup on interior windows
• Replaces corroded or damaged OEM heater cores

Installation Notes and Tips

When installing the Four Seasons Heater Core 91512, ensure compatibility with your specific Buick or Oldsmobile model. The heater core is designed for direct replacement without adjustable pipe positioning, so verify hose connections match the 0.625 inch and 0.750 inch tube sizes. Proper flushing of the cooling system before installation is recommended to prevent premature clogging. Follow vehicle manufacturer guidelines for removal and installation procedures.

Quality Assurance and Warranty

The Four Seasons Heater Core 91512 meets or exceeds OEM standards, providing reliable performance and durability. This part is manufactured with high-quality copper and brass materials to ensure long service life. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.