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Kenworth T880 Torque Rods & U-Bolts
Frequently Asked Questions About Kenworth T880 Torque Rods & U-Bolts
Will these torque rods and U-bolts fit my specific year model T880?
Most torque rods and U-bolts for the T880 are compatible with model years 2013-present, as the suspension design has remained consistent. However, there are variations based on suspension type (Hendrickson, Kenworth AG400/460, or Neway). Always verify your suspension model before ordering. You can find this information on your suspension tag or contact us with your VIN for assistance.
What's the difference between OEM and aftermarket torque rods, and which should I choose?
OEM torque rods typically feature forged steel construction with factory-specified bushings that last 300,000-500,000 miles under normal conditions. Aftermarket options vary in quality - premium brands like Dayton Parts or Watson & Chalin match OEM specs at 20-30% less cost, while economy options may use cast components with shorter-lived bushings. For heavy-haul or severe-duty applications, stick with OEM or premium aftermarket. Standard highway use can reliably use quality aftermarket parts.
Can I replace torque rods myself, or do I need special tools?
Torque rod replacement requires a torque wrench capable of 450-500 ft-lbs, a suitable jack and stands rated for commercial trucks, and ideally a bushing press or heavy-duty C-clamp. The job typically takes 2-3 hours per axle for experienced mechanics. Critical steps include maintaining proper pinion angle (usually 0-2 degrees) and torquing to spec. Many drivers find it more cost-effective to have a shop perform the installation due to the specialized tools required.
How do I know when my U-bolts need replacement?
Replace U-bolts if you notice any visible stretching, thread damage, or rust beyond surface oxidation. During suspension work, always install new U-bolts - reusing them risks improper clamping force. Grade 8 U-bolts are standard for the T880. Check torque at 500 miles after installation, then every 10,000 miles. Proper torque specs are typically 450-500 ft-lbs for 3/4" U-bolts, but always verify with your suspension manufacturer's specifications.
What size torque rods and U-bolts do I need for my T880's suspension?
T880s commonly use 2-3/8" or 2-1/2" diameter torque rods with lengths varying from 24" to 30" depending on suspension configuration. U-bolt sizing depends on your axle: most T880s with standard 20,000-lb front axles use 3/4" x 3-1/8" x 13" round U-bolts. Rear suspensions typically require 3/4" or 7/8" U-bolts with 3-1/2" to 4" inside width. Measure your existing components or provide your suspension model number for exact specifications.