Frequently Asked Questions About Kenworth T700 Drivetrain Parts

What drivetrain components are most critical to replace on my T700, and how often?

The most critical components include the clutch assembly (typically every 250,000-400,000 miles depending on driving conditions), U-joints (inspect every 50,000 miles), and driveshaft carrier bearings (replace every 150,000-200,000 miles). Heavy-duty applications and frequent stop-and-go driving will require more frequent replacements. Always check your differential fluid every 50,000 miles and transmission fluid according to your specific transmission manufacturer's recommendations.

Will aftermarket drivetrain parts fit my specific T700 model year and transmission type?

Compatibility depends on your specific T700 configuration. Most aftermarket parts are designed to fit 2008-2019 T700 models, but you'll need to verify your transmission type (Eaton Fuller, Eaton UltraShift, or Allison), gear ratio, and whether you have a single or tandem axle setup. Check the part specifications against your VIN or door jamb sticker information. When in doubt, contact us with your truck's serial number for exact fitment verification.

What are the most common signs my T700 drivetrain components need replacement?

Watch for vibrations during acceleration (often indicates worn U-joints or driveshaft issues), grinding noises when shifting (clutch or synchronizer problems), clunking sounds from under the truck (loose yokes or worn carrier bearings), and any fluid leaks around the transmission or differentials. Difficulty shifting gears or clutch slippage under load are immediate red flags requiring inspection.

Can I install T700 drivetrain parts myself, or do I need special tools?

While some components like U-joints can be replaced with basic tools and a press, most drivetrain work requires specialized equipment. Clutch replacements need a transmission jack and alignment tools, driveshaft work requires precise balancing, and differential repairs need specific pullers and measurement tools. Labor typically runs 4-8 hours for major components. Consider your mechanical experience and tool availability before attempting DIY installation.

What's the difference between OEM and aftermarket drivetrain parts for the T700?

OEM parts guarantee exact fit and typically come with longer warranties (12-24 months), but cost 20-40% more than quality aftermarket options. Reputable aftermarket brands like Eaton, Meritor, and Spicer often manufacture OEM components and offer comparable quality at lower prices. Heavy-duty aftermarket upgrades may actually exceed OEM specifications for high-mileage or severe-duty applications. Always verify the manufacturer's warranty and whether parts meet or exceed OEM torque and load ratings.