Frequently Asked Questions About International S1700-S1900 Torque Rods & U-Bolts

What years and models do these torque rods and U-bolts fit?

These torque rods and U-bolts are designed specifically for International S1700, S1800, and S1900 series trucks manufactured from 1989 through 2002. They're compatible with both single and tandem axle configurations. Before ordering, verify your truck's specific model number and axle configuration, as some specialty models may require different components.

Are these torque rods greaseable or maintenance-free?

Most torque rods for the S-Series come in both greaseable and maintenance-free options. Greaseable rods feature zerk fittings that allow periodic lubrication, extending bushing life but requiring regular maintenance every 10,000-15,000 miles. Maintenance-free rods use sealed, self-lubricating bushings that don't require greasing but typically need replacement sooner. Consider your maintenance schedule and preferences when choosing between the two styles.

What's the difference between standard and heavy-duty U-bolts?

Standard U-bolts are typically made from Grade 5 steel and work well for standard applications and loads. Heavy-duty U-bolts are manufactured from Grade 8 steel, offering approximately 25% more tensile strength. They feature thicker diameters and enhanced corrosion-resistant coatings. If you regularly haul maximum loads, operate in harsh conditions, or have experienced U-bolt stretching or failure, heavy-duty options provide added peace of mind.

Can I replace torque rods one at a time or should I do them in sets?

While you can technically replace a single failed torque rod, we strongly recommend replacing them in axle sets (both sides) at minimum. Mismatched torque rod wear can cause alignment issues, uneven tire wear, and handling problems. For best results and to maintain proper driveline angles, replace all torque rods on an axle simultaneously. This ensures even suspension geometry and prevents premature failure of the new components.

What torque specifications should I use for installation?

U-bolt torque specifications vary by size and application, but typically range from 65-85 ft-lbs for 1/2-inch U-bolts to 110-120 ft-lbs for 5/8-inch U-bolts. Always tighten in a cross pattern and retorque after 50-100 miles of operation. Torque rod mounting bolts generally require 250-300 ft-lbs, depending on bolt grade and size. Consult your service manual for exact specifications, as over-tightening can damage components while under-tightening risks failure.