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Chrome Rush countdown – 14% off semi truck parts and chrome accessories at 4 State Trucks
Chrome Rush countdown – 14% off semi truck parts and chrome accessories at 4 State Trucks

Peterbilt 357/378 Frame Nut Covers

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  • FREE SHIPPING OVER $249
    13MM And 1/2 Inch Chrome Plastic Top Hat Style Nut Cover

    13MM And 1/2 Inch Chrome Plastic Top Hat Style Nut Cover

    LIFETIME NUT COVERS

    $2.07
    Chrome 13MM And 1/2 Inch Top Hat Style Nut CoverThis lug nut cover comes in chrome plastic and fits 1/2" and 13MM nuts. It's a top hat style cover with a flange, made of ABS plastic and triple chrome...
    09-0506089
    SKU:
    09-0506089
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    13 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Diameter Options:
    1/2 Inch
    Ready To Ship:
    Yes
    $2.07
    Qty in Cart: 0
    Price:
    $2.07
    Subtotal:
  • Chrome Huck Rivet / Nut Cover Set - 48 Pieces

    Chrome Huck Rivet / Nut Cover Set - 48 Pieces

    UNITED PACIFIC

    $36.82
    Chrome Plastic Huck Nut CoversCheck out this chrome plastic huck rivet/nut cover set! This complete set includes forty-four 1 3/16-inch nut covers and four 3/4-inch nut covers. Perfect for enhancing...
    09-05060034
    SKU:
    09-05060034
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $36.82
    Qty in Cart: 0
    Price:
    $36.82
    Subtotal:
  • FREE SHIPPING OVER $249
    15/16 Chrome Plastic Top Hat Style Nut Cover

    15/16 Chrome Plastic Top Hat Style Nut Cover

    LIFETIME NUT COVERS

    $2.03
    Chrome Plastic 15/16 Inch Round Top Hat Lug Nut CoverWe carry a wide variety of Lifetime Nut Covers parts to add to the look of your truck including chrome-plated plastic round top hat lug nut covers...
    09-0506000
    SKU:
    09-0506000
    Location:
    Made In USA
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $2.03
    Qty in Cart: 0
    Price:
    $2.03
    Subtotal:
  • FREE SHIPPING OVER $249
    Nut Cover and Bumper Button Set For Standard Frame For Peterbilt

    Nut Cover and Bumper Button Set For Standard Frame For Peterbilt

    LIFETIME NUT COVERS

    $91.99
    Nut Covers for Frame Fits Peterbilt W/ Standard Bolts 2000 & OlderCheck out this awesome nut cover set for Peterbilt models from 1995 and newer! It's got 44 - 15/16 - 7/8 inch bolt covers and 4 - 3/4...
    01-050600
    SKU:
    01-050600
    Diameter Options:
    3/4 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Plastic/Poly
    Make:
    Peterbilt
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
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Upgrade your Peterbilt 357/378 with premium nut covers that combine style and functionality. These durable chrome plastic covers come in a variety of sizes and designs to dress up your truck's frame hardware. From classic skull and spike patterns to sleek top hat styles, you'll find the perfect accents to complement your rig's look. These push-on covers install easily and securely, enhancing the appearance of your Peterbilt without any complicated installation. Whether you're looking to add a touch of personalization or just keep your bolts and nuts protected, this wide selection of Peterbilt 357/378 nut covers has you covered.

Frequently Asked Questions About Peterbilt 357/378 Frame Nut Covers

What are frame nut covers and what do they do?

Frame nut covers are decorative caps that snap or thread over the exposed frame bolts and nuts running along the chassis rail of your Peterbilt 357 or 378. They hide the raw hardware for a cleaner, more finished look and help protect the nuts and bolt threads from road grime, moisture, and corrosion buildup over time.

Will these covers fit my specific Peterbilt 357 or 378?

Frame nut covers are typically sized to match standard frame bolt hardware found on 357 and 378 models, but nut sizes can vary slightly depending on year and how the truck was originally built or later serviced. Before ordering, measure the hex size across your existing frame nuts and compare it to the cover's listed size to confirm a proper fit.

What materials and finishes are available?

These covers are commonly offered in chrome-plated plastic and stainless steel, with steel typically holding up better long-term against heat, road debris, and repeated washing. Chrome plastic offers a lower-cost option that still delivers a shiny, finished appearance for owners looking to dress up their frame rail without a heavy investment.

How do I install frame nut covers, and do I need any tools?

Most frame nut covers are designed as a simple push-on or snap-fit application that requires no tools and does not involve removing or loosening the actual frame nut. Simply clean the area around the nut, then press the cover into place until it seats securely over the hardware.

Will these covers stay secure in normal driving conditions, or fall off over time?

Quality frame nut covers are built to stay in place under normal highway vibration and driving conditions once properly seated. That said, extreme temperature swings, road salt, and rough terrain can loosen the fit over time, so it is a good idea to periodically check that each cover is still snapped on tight, especially after long hauls or a fresh wash.

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