Frequently Asked Questions About Peterbilt 567/579 Transmission Coolers

Will these transmission coolers fit my specific Peterbilt 567 or 579 model year?

Most aftermarket transmission coolers are designed to fit Peterbilt 567 models from 2013-present and Peterbilt 579 models from 2012-present. However, compatibility can vary based on your truck's specific configuration, engine type, and existing cooling system setup. We recommend checking the product specifications for your exact model year or contacting our support team with your VIN to ensure proper fitment before ordering.

How difficult is the installation process, and what tools will I need?

Installation typically takes 2-4 hours for someone with moderate mechanical experience. You'll need basic hand tools including wrenches, screwdrivers, and potentially a drill for mounting brackets. Most coolers come with detailed instructions and mounting hardware. The main challenges involve proper routing of transmission lines, ensuring adequate clearance from moving parts, and bleeding the system after installation. Professional installation is recommended if you're not comfortable working with hydraulic lines.

What's the difference between tube-and-fin and plate-and-bar cooler designs?

Tube-and-fin coolers are more economical and provide good cooling for standard applications, while plate-and-bar coolers offer superior heat dissipation and durability for heavy-duty use or extreme conditions. Plate-and-bar designs typically have 20-30% better cooling efficiency and are more resistant to road debris damage, making them ideal for trucks that tow heavy loads regularly or operate in hot climates.

How do I know if I need to upgrade my transmission cooler?

Common signs include transmission temperatures consistently running above 200?F during normal operation, fluid that appears dark or has a burnt smell, slipping gears, or if you've increased your hauling capacity or added performance modifications. Trucks operating in mountainous terrain, pulling heavy loads, or running in hot climates benefit most from upgraded cooling. A quality aftermarket cooler can reduce transmission temperatures by 20-40?F compared to stock.

Are these coolers compatible with my existing transmission fluid type?

Yes, quality aftermarket transmission coolers are designed to work with all standard automatic transmission fluids including Dexron VI, Mercon V, and synthetic ATF formulations. The cooler materials (typically aluminum with brass fittings) are chemically compatible with all major fluid types. However, it's important to use the fluid type specified by Peterbilt for your transmission model to maintain warranty coverage and optimal performance.