Peterbilt 567/579 Drivetrain Parts

Frequently Asked Questions About Peterbilt 567/579 Drivetrain Parts

Will these drivetrain parts fit both my Peterbilt 567 and 579 models, or are they model-specific?

While many drivetrain components are interchangeable between the Peterbilt 567 and 579 models from 2013 onwards, some parts are model-specific. Key differences include driveshaft lengths, transmission mounting brackets, and certain differential components. Always verify the part number against your OEM or contact our tech support team with your truck's year, model, and transmission type to ensure proper fitment.

What are the most common signs that my clutch needs replacement, and which clutch kit should I choose?

Common indicators include slipping during acceleration, difficulty shifting gears, burning smell, or clutch pedal changes. For Peterbilt 567/579 models, we recommend ceramic clutches for heavy-duty applications over 80,000 lbs GVW, while organic clutches work well for highway and lighter loads. Most customers choose Eaton or Spicer replacement kits, which include the pressure plate, disc, and release bearing for complete replacement.

Can I install these drivetrain parts myself, or do I need special tools and expertise?

While experienced mechanics can handle many drivetrain repairs, most require specialized tools and knowledge. U-joint replacements and some carrier bearing installations can be DIY projects with basic tools. However, transmission work, differential repairs, and clutch replacements typically require transmission jacks, alignment tools, and torque specifications that make professional installation recommended for safety and warranty purposes.

How do I identify the correct differential ratio and carrier type for my truck?

Your differential ratio is stamped on a tag attached to the differential housing or can be found on your truck's build sheet. Common ratios for 567/579 models range from 2.64 to 4.30. The carrier type (single reduction or tandem) depends on your application. Check your door jamb sticker for the axle model number, or count the bolts on your differential cover - 10 bolts typically indicate a lighter duty unit, while 12 or more suggest heavy-duty applications.

What's the typical lifespan of driveline components, and how can I extend their service life?

With proper maintenance, expect 300,000-500,000 miles from clutches, 500,000-750,000 miles from transmissions, and 750,000-1,000,000 miles from differentials. Regular fluid changes using the correct spec lubricants are crucial - every 50,000 miles for most applications. U-joints typically last 150,000-200,000 miles but should be greased every 5,000-10,000 miles. Proper driver technique, avoiding overloading, and addressing vibrations early significantly extend component life.