Frequently Asked Questions About Kenworth T600 Drivetrain Parts

What years and models of Kenworth T600 are these drivetrain parts compatible with?

Most of our Kenworth T600 drivetrain components are designed to fit models from 1985 through 2007. However, compatibility can vary based on your specific engine configuration and transmission type. We recommend checking your VIN number or contacting our support team with your truck's year, engine model (such as CAT 3406E, Cummins N14, or Detroit Series 60), and transmission type to ensure proper fitment. Major changes occurred in 1994 and 2000 model years that may affect compatibility.

How difficult is it to install differential parts and U-joints on a T600, and what tools are required?

Installing most drivetrain components requires intermediate to advanced mechanical skills. For U-joint replacement, you'll need a heavy-duty U-joint press, snap ring pliers, and a torque wrench capable of 450-500 ft-lbs. Differential work typically requires specialized tools including a dial indicator, bearing puller, and pinion depth gauge. Many drivers report that driveshaft removal takes 2-3 hours, while differential rebuilds can take 6-8 hours. We strongly recommend professional installation for differential gears and bearings to ensure proper gear mesh and preload settings.

What's the difference between standard and heavy-duty driveshaft components for the T600?

Standard driveshafts and U-joints are rated for typical highway applications up to 80,000 GVWR. Heavy-duty components feature larger diameter tubing (typically 4.5" vs 4"), reinforced yokes, and sealed U-joints rated for 100,000+ GVWR or severe service applications. Heavy-duty U-joints use thicker cross sections and premium needle bearings. If you're hauling oversize loads, operating in mountainous terrain, or running a high-torque engine (550+ HP), we recommend upgrading to heavy-duty components for increased longevity.

How often should I replace carrier bearings and U-joints, and what are the warning signs of failure?

Under normal highway conditions, carrier bearings typically last 150,000-250,000 miles, while U-joints can last 100,000-200,000 miles. Warning signs include vibration that increases with speed, clunking sounds during gear changes, visible rust streaks from U-joint caps, and excessive play when manually checking the driveshaft. Carrier bearing failure often presents as a squealing or grinding noise at highway speeds. We recommend inspecting U-joints every oil change and replacing them at the first sign of looseness or corrosion.

Are aftermarket drivetrain parts as reliable as OEM for the Kenworth T600?

Quality aftermarket drivetrain components from reputable manufacturers like Spicer, Meritor, and Dana often match or exceed OEM specifications. These parts typically use the same forging processes and heat treatments as original equipment. The key difference is usually price - aftermarket parts can save you 30-50% compared to dealer pricing. However, avoid unknown brands for critical components like ring and pinion sets or driveshafts, as improper metallurgy can lead to premature failure. All drivetrain parts we carry meet or exceed OEM standards and include manufacturer warranties.