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Peterbilt 357/378 Frame Nut Covers

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 7/8 x 15/16 Inch Chrome Plastic Top Hat Nut Cover

    7/8 x 15/16 Inch Chrome Plastic Top Hat Nut Cover

    GRAND GENERAL

    $1.58
    Chrome Plated Top Hat Style Nut Cover* High Quality Nut Cover* Chrome-Plated Plastic* 7/8 x 15/16 Inch* Flat Top Hat Style* Sold Individually* Warranty On Nut Covers Against Defects In Workmanship &...
    09-0506104
    SKU:
    09-0506104
    Truck Class:
    Universal
    Style Options:
    Flat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.58
    Qty in Cart: 0
    Price:
    $1.58
    Subtotal:
  • Limited Quantity Available
    FREE SHIPPING OVER $249
    Chrome Spike Nut Covers For Hex Nuts - Push On

    Chrome Spike Nut Covers For Hex Nuts - Push On

    UNITED PACIFIC

    $0.79 - $74.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Trucks and Trailers1/2 X 1 7/16 Inch Chrome Spike Nut Covers - Push On - 10 PackChrome Plated Plastic Push On Nut Covers W/...
    PPR_205713
    SKU:
    PPR_205713
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Spike
    Diameter Options:
    1 1/8 Inch
    Diameter Options:
    3/4 Inch
    Length Options:
    1 1/2 Inch
    Length Options:
    2 1/2 Inch
    Location:
    Made In USA
    Diameter Options:
    11/16 Inch
    Diameter Options:
    7/16 Inch
    Diameter Options:
    1/2 Inch
    Length Options:
    1 7/8 Inch
    Diameter Options:
    15/16 Inch
    Diameter Options:
    5/8 Inch
    Length Options:
    2 3/4 Inch
    Diameter Options:
    9/16 Inch
    Length Options:
    1 1/4 Inch
    Type Options:
    Push On
    Length Options:
    2 1/16 Inch
    Length Options:
    2 1/4 Inch
    Length Options:
    2 Inch
    Product Type:
    Wheels
    Ready To Ship:
    Yes
    Diameter Options:
    2 Inch
    Height Options:
    5/8 Inch
    $0.79 - $74.99
    Qty in Cart: 0
    Price:
    $0.79 - $74.99
    Subtotal:
  • FREE SHIPPING OVER $249
    15/16 And 7/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    15/16 And 7/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $12.89
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 15/16 Inch And 7/8 Inch Bolt Heads* Sold As Pack* Warranty On Nut Cover Against Defects In Workmanship & Material...
    09-050603010
    SKU:
    09-050603010
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $12.89
    Qty in Cart: 0
    Price:
    $12.89
    Subtotal:
  • FREE SHIPPING OVER $249
    12MM & 7/16 Inch Chrome Plastic Top Hat Nut Cover with Flange - 10 Pack

    12MM & 7/16 Inch Chrome Plastic Top Hat Nut Cover with Flange - 10 Pack

    AFTERMARKET

    $10.71
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 7/16 Inch And 12MM Bolt Heads* Sold As Pack* Warranty On Nut Cover Against Defects In Workmanship & Material From...
    09-050602810
    SKU:
    09-050602810
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    12 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $10.71
    Qty in Cart: 0
    Price:
    $10.71
    Subtotal:
  • FREE SHIPPING OVER $249
    15MM & 5/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    15MM & 5/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $12.89
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 5/8 Inch And 15MM Bolt Heads* Sold As Pack* Made In USA* Warranty On Nut Cover Against Defects In Workmanship &...
    09-050602610
    SKU:
    09-050602610
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    15 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $12.89
    Qty in Cart: 0
    Price:
    $12.89
    Subtotal:
  • FREE SHIPPING OVER $249
    1.125 & 1.0625 Inch Chrome Plastic Top Hat Nut Cover with Flange - 10 Pack

    1.125 & 1.0625 Inch Chrome Plastic Top Hat Nut Cover with Flange - 10 Pack

    AFTERMARKET

    $20.39
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 1.125 Inch And 1.0625 Inch Bolt Heads* Sold As Pack* Warranty On Nut Cover Against Defects In Workmanship & Material...
    09-050602410
    SKU:
    09-050602410
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $20.39
    Qty in Cart: 0
    Price:
    $20.39
    Subtotal:
  • FREE SHIPPING OVER $249
    15/16 & 7/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    15/16 & 7/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $12.89
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 15/16 Inch And 7/8 Inch* Sold As Pack* Made In USA* Warranty On Nut Cover Against Defects In Workmanship & Material...
    09-050602210
    SKU:
    09-050602210
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $12.89
    Qty in Cart: 0
    Price:
    $12.89
    Subtotal:
  • FREE SHIPPING OVER $249
    30MM Chrome Plastic Huck Rivet Cover -10 Pack

    30MM Chrome Plastic Huck Rivet Cover -10 Pack

    AFTERMARKET

    $16.12
    Huck Rivet Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 30MM Bolt Heads* Sold As Pack* Warranty On Nut Cover Against Defects In Workmanship & Material From Date Of...
    09-050603110
    SKU:
    09-050603110
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Size Options:
    30 mm
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $16.12
    Qty in Cart: 0
    Price:
    $16.12
    Subtotal:
  • FREE SHIPPING OVER $249
    10MM And 3/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    10MM And 3/8 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $11.85
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 3/8 Inch And 10MM Bolt Heads* Sold As Pack* Made In USA* Warranty On Nut Cover Against Defects In Workmanship &...
    09-050602910
    SKU:
    09-050602910
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    10 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $11.85
    Qty in Cart: 0
    Price:
    $11.85
    Subtotal:
  • FREE SHIPPING OVER $249
    15/16 & 7/8 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    15/16 & 7/8 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $1.93
    Chrome Plastic Tall Top Hat Nut Cover With FlangeThis high quality tall top nut cover with a flange by Lifetime Nut Covers is made of chrome plated plastic. It is designed to turn one way to fit a...
    09-0506030
    SKU:
    09-0506030
    Truck Class:
    Universal
    Location:
    Made In USA
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.93
    Qty in Cart: 0
    Price:
    $1.93
    Subtotal:
  • FREE SHIPPING OVER $249
    14MM & 9/16 Inch Chrome Top Hat Nut Cover With Flange - 10 Pack

    14MM & 9/16 Inch Chrome Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $10.71
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 9/16 Inch And 14MM Bolt Heads* Sold As Pack* Warranty On Nut Cover Against Defects In Workmanship & Material From...
    09-050602710
    SKU:
    09-050602710
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    14 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $10.71
    Qty in Cart: 0
    Price:
    $10.71
    Subtotal:
  • FREE SHIPPING OVER $249
    12MM & 7/16 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    12MM & 7/16 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $1.42
    Chrome Plastic Top Hat Style Nut CoverWe strive to offer the largest variety of parts to meet your needs including a huge selection of chrome-plated nut covers made in the USA by Lifetime Nut Covers...
    09-0506028
    SKU:
    09-0506028
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Size Options:
    12 mm
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.42
    Qty in Cart: 0
    Price:
    $1.42
    Subtotal:
  • FREE SHIPPING OVER $249
    17MM & 11/16 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    17MM & 11/16 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $12.89
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 11/16 Inch And 17MM Bolt Heads* Sold As Pack* Made In USA* Warranty On Nut Cover Against Defects In Workmanship &...
    09-050602510
    SKU:
    09-050602510
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    17 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $12.89
    Qty in Cart: 0
    Price:
    $12.89
    Subtotal:
  • FREE SHIPPING OVER $249
    1.125 & 1.0625 Inch Chrome Plastic Bolt Head Top Hat Nut Cover W/ Flange

    1.125 & 1.0625 Inch Chrome Plastic Bolt Head Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $3.05
    Top Hat Style Nut CoverLifetime Nut Covers is a made in the USA source for nut covers and we offer a wide variety to meet your needs including chrome-plated top hat covers with flanges. These nut...
    09-0506024
    SKU:
    09-0506024
    Truck Class:
    Universal
    Location:
    Made In USA
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $3.05
    Qty in Cart: 0
    Price:
    $3.05
    Subtotal:
  • FREE SHIPPING OVER $249
    18MM & 3/4 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    18MM & 3/4 Inch Chrome Plastic Top Hat Nut Cover With Flange - 10 Pack

    AFTERMARKET

    $12.89
    Nut Cover* Made Of High Quality Chrome Plated Plastic* Top Hat Style With Flange* 3/4 Inch* 18MM Bolt Heads* Sold As Pack* Warranty On Nut Cover Against Defects In Workmanship & Material From Date Of...
    09-050602110
    SKU:
    09-050602110
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    18 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $12.89
    Qty in Cart: 0
    Price:
    $12.89
    Subtotal:
  • FREE SHIPPING OVER $249
    15/16 & 7/8 Inch Chrome Plastic Top Hat Nut Cover W/ Flange

    15/16 & 7/8 Inch Chrome Plastic Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $1.65
    Top Hat Nut Cover With FlangeThis top hat Lifetime Nut Cover with a flange is specially designed to fit two different sizes of nuts. Turn the nut covers one way to fit a 15/16 inch bolt head or turn...
    09-0506022
    SKU:
    09-0506022
    Truck Class:
    Universal
    Location:
    Made In USA
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.65
    Qty in Cart: 0
    Price:
    $1.65
    Subtotal:
  • FREE SHIPPING OVER $249
    30MM Chrome Plastic Huck Rivet Cover Bolt Heads

    30MM Chrome Plastic Huck Rivet Cover Bolt Heads

    LIFETIME NUT COVERS

    $2.23
    Top Hat Style Huck Rivet Cover With FlangeWith so many different shapes and sizes of nut covers, be sure to check out our huge selection of ABS plastic injected with triple chrome plating nut covers...
    09-0506031
    SKU:
    09-0506031
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    30 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $2.23
    Qty in Cart: 0
    Price:
    $2.23
    Subtotal:
  • FREE SHIPPING OVER $249
    10MM & 3/8 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    10MM & 3/8 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $1.42
    Chrome Plastic Top Hat Style Nut Cover With FlangeThis top hat Lifetime Nut Cover with a flange is specially designed to fit two different sizes of nuts. Turn the nut covers one way to fit a 3/8 inch...
    09-0506029
    SKU:
    09-0506029
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Size Options:
    10 mm
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.42
    Qty in Cart: 0
    Price:
    $1.42
    Subtotal:
  • FREE SHIPPING OVER $249
    14MM & 9/16 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    14MM & 9/16 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $1.42
    Top Hat Style Nut CoverNot only is having the nut covers to add some shine to your truck something to look for, but also the fitment of the nut covers. We proudly offer Lifetime Nut Covers made in...
    09-0506027
    SKU:
    09-0506027
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Size Options:
    14 mm
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.42
    Qty in Cart: 0
    Price:
    $1.42
    Subtotal:
  • FREE SHIPPING OVER $249
    17MM & 11/16 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    17MM & 11/16 Inch Chrome Plastic Bolt Heads Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $2.03
    Top Hat Style Nut Cover With FlangeThis top hat Lifetime Nut Cover with a flange is specially designed to fit two different sizes of nuts. Turn the nut covers one way to fit a 11/16 inch bolt head or...
    09-0506025
    SKU:
    09-0506025
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Material Options:
    Plastic/Poly
    Size Options:
    17 mm
    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:
  • Total: items /

Adding your products to cart

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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