Frequently Asked Questions About Kenworth T2000 Transmission Coolers

Will these transmission coolers fit my specific year Kenworth T2000, and are there any model variations I should know about?

Most aftermarket transmission coolers for the Kenworth T2000 are designed to fit models from 1996 to 2004. However, there can be variations based on your engine type (Caterpillar C12, C15, or Cummins ISX) and transmission model. We recommend checking your VIN or calling our tech support with your truck's year and engine configuration to ensure proper fitment. Some 2003-2004 models may have different mounting bracket requirements.

What size transmission cooler do I need for heavy hauling, and how much cooling capacity is enough?

For standard highway driving, a 20,000-24,000 GVW rated cooler typically suffices. However, if you're pulling heavy loads, operating in mountainous terrain, or running in hot climates, we recommend upgrading to a 30,000-40,000 GVW rated cooler. The most popular size for T2000 drivers is the 11" x 8" plate-style cooler with 3/4" or 5/8" fittings, which provides adequate cooling for most applications while fitting within the existing mounting space.

Can I install a transmission cooler myself, and what tools or additional parts will I need?

Installation typically takes 2-4 hours for someone with basic mechanical skills. You'll need standard hand tools, transmission cooler lines (if not included), ATF fluid for topping off, and mounting hardware. Most coolers mount in front of the radiator using the existing bracket holes. The main challenges are routing the lines to avoid heat sources and ensuring proper clearance from moving parts. We recommend having thread sealant and new hose clamps on hand.

Are aluminum or copper/brass transmission coolers better for the T2000, and how long do they typically last?

Both materials work well, but each has trade-offs. Aluminum coolers are lighter, resist corrosion better, and typically last 8-12 years with proper maintenance. Copper/brass units transfer heat more efficiently but are heavier and can develop green corrosion in salt-heavy environments, lasting 6-10 years on average. For T2000s operating in northern states with heavy road salt use, we generally recommend aluminum. For maximum cooling efficiency in hot climates, copper/brass performs slightly better.

My transmission is running hot even with a cooler installed - what should I check?

First, verify your cooler isn't clogged with debris - this is the most common issue. Check that cooler lines aren't kinked or restricted, and ensure the cooler is mounted with proper airflow (fins running vertically). Confirm your transmission fluid level is correct and the fluid isn't burnt. If running an auxiliary cooler, make sure it's plumbed in series after the radiator cooler, not before it. Operating temperatures should stay between 180-200 degrees Fahrenheit under normal loads. If problems persist, your transmission may need service beyond just cooling improvements.