• Top Street Performance 1/4"-20 and 5/16"-18 Black & Chrome Large Spinner Air Cleaner Nut - for street and performance builds
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Top Street Performance

1/4"-20 & 5/16"-18 Black & Chrome Large Spinner Air Cleaner Nut

1/4"-20 & 5/16"-18 Black & Chrome Large Spinner Air Cleaner Nut

SKU: SP7220

$7.95
$7.95 $8.75
Shipping calculated at checkout.

In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Large spinner nut for easy hand-tightening without tools
  • Fits both 1/4"-20 and 5/16"-18 threaded studs — one nut, two sizes
  • Black and chrome steel finish for a clean engine-bay look
  • Common replacement or spare for round/oval air-cleaner kits

Description

This large spinner air-cleaner nut is designed to accommodate two common thread sizes — 1/4"-20 and 5/16"-18 — in a single part, reducing the need to stock separate nuts for different stud sizes. The oversized spinner design allows hand-tightening without tools, convenient for routine filter service or air-cleaner removal.

Steel construction with a black and chrome finish provides a clean, two-tone appearance for the engine bay. Confirm your air-cleaner stud's thread size before ordering — while this nut is designed to fit both 1/4"-20 and 5/16"-18, verify compatibility if you're unsure which thread your assembly uses.

Commonly purchased as a replacement or spare mounting nut for standard round or oval air-cleaner kits, or for custom intake-system builds.


Applications
Fits air-cleaner assemblies with either a 1/4"-20 or 5/16"-18 threaded stud; commonly used as a replacement or spare mounting nut for standard round/oval air-cleaner kits, or in custom intake-system builds.

Sizing
Fits both 1/4"-20 and 5/16"-18 thread sizes, steel construction, black and chrome finish.

Specs

Thread Size1/4"-20 and 5/16"-18
MaterialSteel
FinishBlack & Chrome

Engine Fitment

COMPATIBLE WITH
Universal — fits 1/4"-20 and 5/16"-18 threaded studs.

NOTES
• Confirm your stud's thread size before ordering — this nut is designed to accommodate both, but verify fit if you're unsure which thread your air-cleaner assembly uses.
• Large spinner design for easy hand-tightening without tools.

COMMON VEHICLE APPLICATIONS
Replacement or spare mounting nut for standard round/oval air-cleaner kits
Custom intake-system builds

Q&A

Does this nut fit 1/4"-20 or 5/16"-18 threads?
This air cleaner nut is designed to fit both 1/4"-20 and 5/16"-18 threaded studs.

How do I know which thread size my air-cleaner stud uses?
Check the thread size of your existing stud or refer to your air cleaner assembly's specifications. Since this nut fits both 1/4"-20 and 5/16"-18 studs, it is compatible with the two most common air cleaner stud thread sizes.

Do I need tools to tighten this nut?
No. The spinner-style design is intended for hand-tightening, allowing quick installation and removal without tools.

What's this nut typically used for?
This nut is commonly used as a replacement or spare air cleaner mounting nut for round and oval air cleaner assemblies, as well as custom intake system builds.

Is this nut chrome-plated or a mixed finish?
This air cleaner nut features a black and chrome two-tone finish, rather than a single uniform finish.

Emissions Notice

This product does not affect vehicle emissions and is not subject to emissions compliance regulations.