Proform Parts Air Cleaner Mounting Nut

Proform Parts Air Cleaner Mounting Nuts: Where Function Meets Engine-Bay Style

When it comes to finishing off a classic carburetor-fed engine build, few details make as immediate a visual impact as the air cleaner mounting nut. Proform Parts has built a well-earned reputation in this niche by treating the humble center nut as more than just a fastener — it's a statement piece for your engine bay. Browse the full selection of air cleaner mounting nuts to find the right fit for your build.

Officially Licensed GM & Mopar Designs

Proform is the factory source for Chevrolet Performance licensed engine dress parts and Ford Performance licensed products , and that licensing heritage is on full display in their air cleaner mounting nut lineup. These are officially licensed GM Performance Parts products , which means the Chevrolet Bowtie and other branded emblems are authentic, not imitation. For Mopar enthusiasts, Proform also offers a floating MOPAR Omega emblem design with hand-inlaid paint, making it the perfect accent piece for the Mopar muscle car enthusiast.

Quality Materials and Thoughtful Engineering

Proform's air cleaner mounting nuts are engineered with the same philosophy that drives the rest of their catalog. They are manufactured from high-quality die-cast aluminum material with a great-looking chrome finish. For chrome fans, chrome-plated zinc die-cast center nuts are also available in three popular styles, in both large and small sizes.

One of the most practical features across the lineup is universal stud compatibility. The large size is recommended for 14-inch and 10-inch air cleaner kits, while the small size suits smaller air cleaner kits — and all styles fit both 1/4"-20 and 5/16"-18 studs. This broad thread compatibility means less guesswork when sourcing hardware for a build.

Style Options for Every Build Aesthetic

Whether you're after a classic chrome show look or something more aggressive, Proform covers the spectrum. For a bolder look, Proform offers an extra-large Bowtie center nut with a 3D contoured design featuring sleek slanted edges, a black crinkle finish, and black Bowtie center — made from quality aluminum and compatible with both 1/4"-20 and 5/16"-18 studs. The black crinkle finish option has become especially popular with builders who want a more sinister under-hood appearance, while the traditional chrome variants suit show cars and restorations alike.

Part of a Trusted Performance Brand

Proform Parts (Specialty Auto Parts U.S.A., Inc.) is a leader in the high-performance automotive aftermarket, engineering and manufacturing creative products from intelligent concepts — with dozens of patents, thousands of SKUs, and millions of satisfied customers built up over more than 30 years. Their air cleaner mounting nuts fit neatly into a broader engine dress-up philosophy: Proform offers a wide range of high-quality engine dress-up components and tools, with a focus on style, performance, and affordability.

For enthusiasts restoring a classic muscle car, building a hot rod, or simply wanting a polished engine bay, Proform's air cleaner mounting nuts deliver an authentic, officially licensed finishing touch that's hard to match at the price point.