Frequently Asked Questions About Kenworth W900A Frame Nut Covers

What materials are these frame nut covers made from, and how long will they last?

Our Kenworth W900A frame nut covers are primarily available in two materials: chrome-plated ABS plastic and 304 stainless steel. The chrome-plated ABS options offer excellent shine at an affordable price point and typically last 3-5 years with proper care. The stainless steel versions provide superior durability and corrosion resistance, lasting 10+ years even in harsh weather conditions. Both materials are designed to withstand road salt, UV exposure, and temperature extremes common in commercial trucking applications.

Will these nut covers fit my specific W900A model year?

These frame nut covers are designed to fit Kenworth W900A models from 1961 through 1984. They accommodate the standard 1-1/2" (38mm) frame nuts used on these classic trucks. However, if your W900A has been modified with aftermarket frame components or non-standard fasteners, we recommend measuring your existing nuts before ordering. The covers require approximately 1/4" clearance around the nut for proper fitment.

How difficult is the installation process, and what tools do I need?

Installation is straightforward and typically takes 30-45 minutes for a complete set. Most covers use a push-on design that snaps securely over your existing frame nuts - no tools required for these models. Some premium versions feature threaded designs that replace your existing nuts entirely, requiring only a standard socket wrench. We recommend cleaning the frame area thoroughly before installation and applying a small amount of anti-seize compound to threaded versions for easier future removal.

What styles and finishes are available for the W900A?

We offer several popular styles including smooth dome, pointed bullet, and flat-top designs. Finish options include mirror-polished chrome, brushed stainless steel, and powder-coated colors (typically black, red, and blue). The smooth dome style in chrome remains our best-seller for W900A owners seeking that classic look. Each style is available in standard 1-1/2" size, with some designs also offered in 1-3/4" for trucks with larger frame modifications.

How many nut covers do I need for a complete set on my W900A?

A standard Kenworth W900A typically requires 32-40 frame nut covers for complete coverage, depending on your specific configuration and wheelbase. The most common setup uses 16 covers per side for the main frame rails. Additional covers may be needed if you have auxiliary equipment brackets, fifth wheel assemblies, or extended frames. We offer sets of 10, 20, and 40 pieces, with the 40-piece set being the most popular choice for full frame coverage. Count your visible frame nuts before ordering to ensure you purchase the correct quantity.