Kenworth T700 Frame & Chassis

Frequently Asked Questions About Kenworth T700 Frame & Chassis

What years and models of Kenworth T700 will these frame and chassis parts fit?

Our frame and chassis components are designed to fit Kenworth T700 models from 2008 through 2019. However, there are variations between early models (2008-2010) and later models (2011-2019) due to frame rail spacing and mounting point changes. Always verify your specific truck's OEM and model year before ordering, as some components like cross members and frame brackets may have different bolt patterns depending on whether you have a day cab or sleeper configuration.

What material grades are used in these frame components, and how do they compare to OEM?

Most of our frame rails and structural components are manufactured from high-strength steel with a minimum yield strength of 50,000 PSI, matching or exceeding OEM specifications. Critical wear components like fifth wheel plates and suspension brackets use heat-treated alloy steel for enhanced durability. All steel components feature either powder coating or e-coating for corrosion resistance, with zinc plating on hardware. We recommend inspecting and touching up any coating damage annually to maintain the warranty.

Do I need special tools or equipment to install frame and chassis components?

Installation typically requires heavy-duty equipment including a minimum 5-ton jack, jack stands rated for commercial vehicles, torque wrenches capable of 450-500 ft-lbs, and proper frame spreading tools for certain components. Many installations require two people for safety. Critical torque specifications vary by component but generally range from 250-475 ft-lbs for frame bolts. We strongly recommend professional installation for major components like frame rails or cross members to ensure proper alignment and safety.

What are the most common fitment issues with aftermarket frame components?

The most frequent fitment challenges involve frame width variations between different T700 configurations. Trucks with wider frame rails (especially some heavy-haul specs) may require different brackets or spacers. Additionally, trucks with factory-installed auxiliary equipment like APUs or hydraulic systems may have non-standard mounting points. Always measure your frame rail width (typically 34.5" or 35" center-to-center) and check for any modifications before ordering suspension hangers or cross members.

How do I determine if I need standard or heavy-duty frame components?

Check your truck's GVWR and typical load weights. Standard components work well for highway applications up to 80,000 lbs GVWR. Heavy-duty options are recommended for vocational use, frequent overweight permits, or severe service applications. Key indicators you need heavy-duty components include frequent frame flex complaints, existing cracks in cross members, or if you regularly haul close to maximum capacity. Heavy-duty versions typically feature thicker steel gauges and additional gusseting at stress points.