5 Killer Axle Cover Styles to Personalize Your Semi Truck

14th Apr 2025

Semi truck axle covers protect the exposed axle housing from dirt and road debris while offering some really awesome-looking styles. And unlike "bigger" aftermarket purchases, like bumpers or grilles, a new set of semi truck hub caps won't eat into your budget.

Here are 5 great-looking styles to choose from. But first, here are a few general buyer's tips to know.

How to Purchase the Right Axle Cover

Axle Cover Compatibility

Designed for most hub-piloted or stud-piloted wheels
Common wheel diameters include 22.5 inches and 24.5 inches

Axle Cover Kits vs Individual Covers

You can buy them as kits or individual axle covers.
First, check how many wheels a kit covers, and if they're made to fit rear or front axles.
Check to see if it comes with lug nut covers too.

Exposed Thread Measurement

If less than 1/2 inch of exposed thread = push-on lug nut cover or a specialized axle cover.
If more than 1/2 inches of thread = threaded covers.

With this in mind, here are five of the best-looking axle covers to consider adding to your commercial truck.

#1. Polished Black Top Hat Axle Cover Set (Rear Axle)

Made with ABS reinforced (anti-rust), lightweight plastic that boasts a matte black finish, this rear axle cover by United Pacific offers a lot of value for the price tag.

Product Features:

33 mm threaded, spiked nut covers
Kit includes 1 cover, 1 cap, and 10 lug nut covers
Fits most 20, 22.5 and 24.5-inch wheels with an 11.25-inch bolt circle/center.
Removable center hub cap piece
Warranty-backed against workmanship defects

#2. Chrome Deluxe Rear Axle Cover Set with Flat Hubcap

Need a polished, stainless-steel aesthetic to match the rest of your exterior truck's trim? Delux chrome axle covers are a great option.

You can choose from various options:

Flat, Rounded or Cone Cap Styles
2.75 inch or 3.25 Inch Nut Cover
Tall Height vs Short Height Cover

#3. Pointed Axle Cover Combo Kit

Get more value for your dollars with an entire axle cover kit.

#4. Full Moon Rear Axle Cover Kit (Old-School Look)

Now, this is a unique style if there ever was one. This chrome-plated, reflective rear axle cover doesn't feature any lug nut covers, just a solid reflective plate to give your wheels a wider, fuller look.

#5. Rear High-Hat Axle Cover (8 Inches Tall)

If you really want your rear axle cover to protrude out and attract some attention, consider using this style!

It features a die-cast chrome finish that extends 8.5 inches. Due to size and material (stainless steel), it's not the cheapest option. But depending on the style you're shooting for, it might just be worth it.

Axle Cover & Hub Cap Fitment Tips

As a quick reminder, an axle cover (axle cap) covers the entire rear axle housing, while a hubcap (a smaller cover) only covers the front steer axle center wheel area, hiding any exposed lug nuts.

The majority of semi trucks have axle covers, but there are some that do use hubcaps (AKA wheel covers).

How to Find the Right Hub Cap Fitment for Your Truck

Buy Unique Axle Covers at 4 State Trucks

If you're looking to really customize your truck and take it to the next level, consider pairing your new axle cover kit with some stainless steel bumpers, reflective mirror covers, or additional underglow lighting. We'll help you find everything you need in one convenient place.

14th Apr 2025