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Peterbilt 388 Frame Crossmembers & Covers

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 55.50 Inch Cross Tube - 2.50 In OD, 1-5/8 In-12 Ends

    55.50 Inch Cross Tube - 2.50 In OD, 1-5/8 In-12 Ends

    AFTERMARKET

    $334.99
    55.50 Inch C To C Cross Tube* High Quality Cross Tube* 55.50 Inch Length* 2.50 Inch O.D.* 1-5/8 Inch-12 I.D.* (2) Sleeve Adapters At 1-5/8 Inch 12 OD To 1-1/4 Inch-12 ID Threading On Both Sides* Made...
    29-05090127
    SKU:
    29-05090127
    Material Options:
    Steel
    Length Options:
    55 1/2 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $334.99
    Qty in Cart: 0
    Price:
    $334.99
    Subtotal:
  • 64 Inch Cross Tube - 2 In OD, 1-1/4 Inch-12 Ends Replaces 820635

    64 Inch Cross Tube - 2 In OD, 1-1/4 Inch-12 Ends Replaces 820635

    AFTERMARKET

    $233.99
    64 Inch Cross Tube Replaces 820635Built for toughness and precision, this 64 Inch Cross Tube offers superior strength for your truck's steering system. With a 2.00-inch outer diameter and 1-1/4...
    29-05090125
    SKU:
    29-05090125
    Length Options:
    64 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $233.99
    Qty in Cart: 0
    Price:
    $233.99
    Subtotal:
  • 54.61 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 1009011

    54.61 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 1009011

    AFTERMARKET

    $202.99
    54.61 Inch C To C Cross Tube Replaces 1009011Built for toughness, the 54.61 Inch Cross Tube delivers the support your truck needs for challenging roads. With a 1.75-inch outer diameter and 1-1/4...
    29-05090123
    SKU:
    29-05090123
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Length Options:
    54 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $202.99
    Qty in Cart: 0
    Price:
    $202.99
    Subtotal:
  • 59.38 Inch Cross Tube - 1.625 In OD, 1-1/8 In-12 Ends Replaces 140TR106

    59.38 Inch Cross Tube - 1.625 In OD, 1-1/8 In-12 Ends Replaces 140TR106

    AFTERMARKET

    $201.99
    59.38 Inch Cross Tube Replaces 140TR106* High Quality Cross Tube* 1-1/8 Inch-12 I.D.* 1.625 Inch O.D.* 59.380 Inch Length* Made In USA* Sold Individually * Warranty On Cross Tubes Against Defects In...
    29-05090144
    SKU:
    29-05090144
    Length Options:
    59 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $201.99
    Qty in Cart: 0
    Price:
    $201.99
    Subtotal:
  • 54 Inch Cross Tube - 1.75 In OD, 1-1/4 Inch-12 Ends Replaces 818817

    54 Inch Cross Tube - 1.75 In OD, 1-1/4 Inch-12 Ends Replaces 818817

    AFTERMARKET

    $200.99
    54 Inch C To C Cross Tube Replaces 818817, 820661* High Quality Cross Tube* 1-1/4 Inch-12 I.D.* 1.75 Inch O.D.* 54.00 Inch Length* Made In USA* Sold Individually * Warranty On Cross Tubes Against...
    29-05090142
    SKU:
    29-05090142
    Material Options:
    Steel
    Length Options:
    54 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $200.99
    Qty in Cart: 0
    Price:
    $200.99
    Subtotal:
  • 60.410 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends, Replaces 88936083

    60.410 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends, Replaces 88936083

    AFTERMARKET

    $189.99
    60.41 Inch C To C Cross Tube Replaces 88936083, 7Qh331P4. 8226L20Rt1364X1* High Quality Cross Tube* 60.410 Inch Length* 1.75 Inch OD* 1-1/4 Inch-12 ID* Made In USA* Sold Individually* Warranty On...
    29-05090119
    SKU:
    29-05090119
    Length Options:
    60 Inch
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $189.99
    Qty in Cart: 0
    Price:
    $189.99
    Subtotal:
  • 62.25 Inch Cross Tube - 1.75 In OD, 1-1/8 In-12 Ends Replaces 1009249, 806963

    62.25 Inch Cross Tube - 1.75 In OD, 1-1/8 In-12 Ends Replaces 1009249, 806963

    AFTERMARKET

    $279.99
    62.25 Inch C To C Cross Tube Replaces 1009249, 806963Reinforce your truck's chassis with this high-quality 62.25 Inch Cross Tube, built to deliver strength and durability where you need it most...
    29-05090121
    SKU:
    29-05090121
    Length Options:
    62 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $279.99
    Qty in Cart: 0
    Price:
    $279.99
    Subtotal:
  • 53.54 Inch Cross Tube, 1.812 In OD, 1-1/4 In-12 Ends Replaces A3102Y3847

    53.54 Inch Cross Tube, 1.812 In OD, 1-1/4 In-12 Ends Replaces A3102Y3847

    AFTERMARKET

    $165.99
    53.54 Inch C To C Cross Tube Replaces A3102Y3847* High Quality Cross Tube* 1-1/4 Inch-12 I.D.* 1.812 Inch O.D.* 53.540 Inch Length* Made In USA* Sold Individually * Warranty On Cross Tubes Against...
    29-05090140
    SKU:
    29-05090140
    Length Options:
    53 1/2 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $165.99
    Qty in Cart: 0
    Price:
    $165.99
    Subtotal:
  • 60.50 Inch Cross Tube - 2 In OD, 1-1/8 In-12 Ends Replaces 1006732

    60.50 Inch Cross Tube - 2 In OD, 1-1/8 In-12 Ends Replaces 1006732

    AFTERMARKET

    $173.99
    60.50 Inch C To C Cross Tube Replaces 1006732* High Quality Cross Tube* 1-1/8 Inch-12 I.D.* 2.00 Inch O.D.* 60.50 Inch Length* Made In USA* Sold Individually * Warranty On Cross Tubes Against Defects...
    29-05090138
    SKU:
    29-05090138
    Material Options:
    Steel
    Length Options:
    60 1/2 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $173.99
    Qty in Cart: 0
    Price:
    $173.99
    Subtotal:
  • 58.12 Inch Cross Tube - 1.75 In OD, 1-1/8 In-12 Ends Replaces A3102V3454

    58.12 Inch Cross Tube - 1.75 In OD, 1-1/8 In-12 Ends Replaces A3102V3454

    AFTERMARKET

    $197.99
    58.12 Inch C To C Cross Tube Replaces A3102V3454* High Quality Cross Tube* 58.12 Inch Length* 1.75 Inch OD* 1-1/8 Inch-12 ID* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects...
    29-05090117
    SKU:
    29-05090117
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    58 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • 17.625 Inch Fixed Torque Rod W/ Blank 1-1/4 Inch Dia. Shaft Replaces 90045540

    17.625 Inch Fixed Torque Rod W/ Blank 1-1/4 Inch Dia. Shaft Replaces 90045540

    AFTERMARKET

    $217.99
    17.625 Inch Torque Rod W/ Blank Shaft Replaces 90045540* High Quality Torque Rod* Includes  - Torque Rod Bushing - Apex Bushing  - Torque Rod Blank* 1-1/4 Inch Shaft Diameter* 17-5/8 Inch C To C*...
    29-05090135
    SKU:
    29-05090135
    Truck Class:
    Heavy Duty
    Length Options:
    17 5/8 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $217.99
    Qty in Cart: 0
    Price:
    $217.99
    Subtotal:
  • 60.60 Inch Cross Tube - 1.50 In OD, 1-1/8 In-12 Ends Replaces 339TR119

    60.60 Inch Cross Tube - 1.50 In OD, 1-1/8 In-12 Ends Replaces 339TR119

    AFTERMARKET

    $206.99
    60.60 Inch C To C Cross Tube Replaces 339TR119* High Quality Cross Tube* 60.60 Inch Length* 1.50 Inch OD* 1-1/8 Inch-12 ID* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects In...
    29-05090113
    SKU:
    29-05090113
    Length Options:
    60 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $206.99
    Qty in Cart: 0
    Price:
    $206.99
    Subtotal:
  • 20 Inch Adjustable Torque Rod, 1-1/4 Inch Replaces 90045537

    20 Inch Adjustable Torque Rod, 1-1/4 Inch Replaces 90045537

    AFTERMARKET

    $336.99
    20.00 Inch C To C Torque Rod Replaces 90045537* High Quality Torque Rod * 20.00 Inch C To C* Shaft Diameter- 1-1/4 Inch* (2) Torque Rod Bushing* Side A And B- Straddle* Side A Angle 5 Degrees* Side B...
    29-05090132
    SKU:
    29-05090132
    Length Options:
    20 Inch
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $336.99
    Qty in Cart: 0
    Price:
    $336.99
    Subtotal:
  • 53.63 Inch Cross Tube - 1.50 In OD, 1-1/8 In-12 Ends Replaces 120TR108

    53.63 Inch Cross Tube - 1.50 In OD, 1-1/8 In-12 Ends Replaces 120TR108

    AFTERMARKET

    $167.99
    53.625 Inch C To C Cross Tube Replaces 120TR108 5C4Z3280AA, 5C4Z3280BB, 5C5O3280AA,1668403C91* High Quality Cross Tube* 1.50 Inch OD* 53.63 Inch Length* 1-1/8 Inch-12 ID* Made In USA* Sold...
    29-05090111
    SKU:
    29-05090111
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    53 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $167.99
    Qty in Cart: 0
    Price:
    $167.99
    Subtotal:
  • 62.875 Inch Cross Tube - 1.9 In OD, 1-1/4 In-12 Ends Replaces A3102N4460

    62.875 Inch Cross Tube - 1.9 In OD, 1-1/4 In-12 Ends Replaces A3102N4460

    AFTERMARKET

    $207.99
    62.875 Inch C To C Cross Tube Replaces A3102N4460* High Quality Cross Tube* 62.875 Inch Length* 1.90 Inch O.D.* 1-1/4 Inch-12 I.D.* Made In USA* Sold Individually* Warranty On Cross Tubes Against...
    29-05090128
    SKU:
    29-05090128
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    63 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $207.99
    Qty in Cart: 0
    Price:
    $207.99
    Subtotal:
  • 46.25 Inch Cross Tube - 2 In OD, 1-5/8 In-12 Ends Replaces 971097

    46.25 Inch Cross Tube - 2 In OD, 1-5/8 In-12 Ends Replaces 971097

    AFTERMARKET

    $302.99
    46.25 Inch C To C Cross Tube Replaces 971097* High Quality Cross Tube* 46.25 Inch Length* 2.00 Inch O.D.* 1-5/8 Inch-12 I.D.* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects...
    29-05090126
    SKU:
    29-05090126
    Length Options:
    46 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $302.99
    Qty in Cart: 0
    Price:
    $302.99
    Subtotal:
  • 52 Inch Cross Tube - 2 In OD, 1-1/4 In-12 Ends Replaces 820632

    52 Inch Cross Tube - 2 In OD, 1-1/4 In-12 Ends Replaces 820632

    AFTERMARKET

    $293.99
    52 Inch C To C Cross Tube Replaces 820632* High Quality Cross Tube* 52 Inch Length* 2.00 Inch O.D.* 1-1/4 Inch-12 I.D.* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects In...
    29-05090124
    SKU:
    29-05090124
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    52 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $293.99
    Qty in Cart: 0
    Price:
    $293.99
    Subtotal:
  • 51.42 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces A3102R4282

    51.42 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces A3102R4282

    AFTERMARKET

    $162.99
    51.42 Inch C To C Cross Tube Replaces A3102R4282* High Quality Cross Tube* 51.42 Inch Length* 1.75 Inch OD* 1-1/4 Inch-12 ID* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects...
    29-05090122
    SKU:
    29-05090122
    Length Options:
    51 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $162.99
    Qty in Cart: 0
    Price:
    $162.99
    Subtotal:
  • 59.25 Inch Cross Tube - 1-1/4 In OD, 1 In-16 Ends Replaces A3102B1978

    59.25 Inch Cross Tube - 1-1/4 In OD, 1 In-16 Ends Replaces A3102B1978

    AFTERMARKET

    $189.99
    59.25 Inch C To C Cross Tube Replaces A3102B1978* High Quality Cross Tube* 1-1/4 Inch OD * 59-1/4 Inch Overall Length* 1.0 Inch-16 Ends* Made In USA* Sold Individually* Warranty On Cross Tubes...
    29-05090109
    SKU:
    29-05090109
    Length Options:
    59 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $189.99
    Qty in Cart: 0
    Price:
    $189.99
    Subtotal:
  • 58 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 818818

    58 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 818818

    AFTERMARKET

    $207.99
    58 Inch C To C Cross Tube Replaces 818818* High Quality Cross Tube* 58.00 Inch Length* 1.75 Inch OD* 1-1/4 Inch-12 ID* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects In...
    29-05090120
    SKU:
    29-05090120
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $207.99
    Qty in Cart: 0
    Price:
    $207.99
    Subtotal:
  • Total: items /

Adding your products to cart

Enhance your Peterbilt 388 with durable Peterbilt 377, 378, 388, and 389 frame crossmembers and stylish covers. From stainless steel and aluminum options to fiberglass and steel designs, this product lineup offers a variety of high-quality products to protect your truck's rear frame. Keep your rig looking its best with customizable covers that feature notch cutouts, light openings, and emblem mounts. Plus, find the right walking beam components to ensure a smooth, comfortable ride. Whether you're restoring a classic Peterbilt or upgrading a newer model, this collection of frame crossmembers and covers has everything you need to elevate your Peterbilt 388's appearance and functionality.

Frequently Asked Questions About Peterbilt 388 Frame Crossmembers & Covers

What are frame crossmembers and covers used for on a Peterbilt 388?

Frame crossmembers are structural components that run horizontally between the frame rails, providing rigidity and support for the chassis, while covers protect these areas from road debris, moisture, and corrosion. Together they help maintain frame integrity and give the underside of the truck a cleaner, finished appearance.

Will these crossmembers and covers fit my specific Peterbilt 388 configuration?

Fitment can vary depending on wheelbase, frame rail spacing, and whether your truck has factory or aftermarket modifications. It is important to check the listed specifications and, when possible, compare part numbers with your truck's build sheet or consult with our parts team before ordering to confirm a proper fit.

What materials are these parts made from, and how well do they hold up over time?

Most crossmembers and covers are constructed from steel or aluminum, depending on the specific part and application. Steel components typically offer strength and durability for structural crossmembers, while aluminum covers are often chosen for their corrosion resistance and lighter weight. Finish options may include raw metal, painted, or powder-coated surfaces to help resist rust and wear from daily use.

Can I install a crossmember or cover myself, or should I have a professional do it?

Covers are generally straightforward to install with basic tools and can often be handled by anyone comfortable with routine truck maintenance. Structural crossmembers, however, are load-bearing components, and improper installation can affect frame integrity and safety. For crossmember replacement or modification, we recommend having the work done by a qualified technician familiar with frame repairs.

How do I know if my current crossmember or cover needs to be replaced?

Common signs include visible rust or corrosion, cracks, bending, loose or missing mounting hardware, or a cover that no longer sits flush and allows debris underneath. If you notice any flexing or unusual noise from the frame area while driving, it is a good idea to have the crossmember inspected as soon as possible.


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