Peterbilt 388 Frame Crossmembers & Covers

Product
Qty in Cart
Quantity
Price
Subtotal

On Sale

Limited Quantity Available

Bronze Bushing 1.625 OD x 1.375 ID X 4 Inch

AUTOMANN USA

MSRP:

Now: $11.24

Was: $19.26

4 Inch Bronze Bushing* High Quality Bronze Bushing* 4.00 Inch Length* 1.625 Inch O.D.* 1.375 Inch I.D.* Sold Individually* Warranty On Bronze Bushings Against Defects In Workmanship & Material From...

09-05250118

SKU:

09-05250118

Truck Class:

Universal

Material Options:

Brass

Diameter Options:

4 Inch

Make:

Universal Items

Product Type:

Frame & Chassis

Ready To Ship:

Yes

MSRP:

Now: $11.24

Was: $19.26

Qty in Cart: 0

Price:

MSRP:

Now: $11.24

Was: $19.26

Subtotal:
Torque Rod W/ Poly Bushings 17 5/16 Inch C To C, Replaces 345-240 For Peterbilt

BESTFIT TRUCK PARTS

MSRP:

$196.99

Was:

17 5/16 Inch C To C Torque Rod W/ Poly Bushings Replaces 345-240 Fits PeterbiltEnsure reliable suspension performance with this 17 5/16 Inch Torque Rod with Poly Bushings, a high-quality replacement...

01-05100034

SKU:

01-05100034

Truck Class:

Heavy Duty

Material Options:

Steel

Make:

Peterbilt

Product Type:

Frame & Chassis

Diameter Options:

1 1/4 Inch

MSRP:

$196.99

Was:

Qty in Cart: 0

Price:

MSRP:

$196.99

Was:

Subtotal:
Type 30 Service Chamber W/ 1 5/8 Inch Push Rod & Tailgate Lock

AFTERMARKET

MSRP:

$157.99

Was:

Type 30 Service Chamber W/ 4.75 Inch Chamber & Tailgate StrokeKeep your truck's tailgate functioning flawlessly with the Type 30 Service Chamber W/ 1 5/8 Inch Push Rod & Tailgate Lock, a...

09-05170093

SKU:

09-05170093

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$157.99

Was:

Qty in Cart: 0

Price:

MSRP:

$157.99

Was:

Subtotal:
Castellated Nut, 1-1/4 Inch

AUTOMANN USA

MSRP:

$16.18

Was:

1-1/4 Inch -12 Thread Castle Nut* High Quality Castellated Nut* 1.25 Inch Size* 1-1/4 Inch Thickness* Used On Advance Mixer Front 20K Axle* Sold Individually* Warranty On Castellated Nuts Against...

80-05250000

SKU:

80-05250000

Material Options:

Steel

Truck Class:

Universal

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$16.18

Was:

Qty in Cart: 0

Price:

MSRP:

$16.18

Was:

Subtotal:
Pivot Bolt Kit For Hendrickson Lift Axle

AFTERMARKET

MSRP:

$162.99

Was:

Lift Axle Bolt Kit* High Quality Bolt Kit* Consists Of - (8) Cap Screw - (8) Lock Nut - (16) Iron Flat Washer* Made In USA* Sold Individually* Warranty On Bolt Kits Against Defects In...

29-05250045

SKU:

29-05250045

Truck Class:

Universal

Make:

Universal Items

Product Type:

Frame & Chassis

Ready To Ship:

Yes

MSRP:

$162.99

Was:

Qty in Cart: 0

Price:

MSRP:

$162.99

Was:

Subtotal:
On Sale

Limited Quantity Available

Hex Head Flange Bolt 5/8-18 X 2-1/2 Inch Grade 8

AUTOMANN USA

MSRP:

Now: $2.42

Was: $3.45

Grade 8 Flanged BoltBuilt for strength and precision, this Hex Head Flange Bolt features a 5/8-18 thread, 2-1/2 inch length, and Grade 8 construction. The flanged head ensures even clamping pressure...

29-05250048

SKU:

29-05250048

Material Options:

Steel

Truck Class:

Universal

Length Options:

2 1/2 Inch

Make:

Universal Items

Product Type:

Frame & Chassis

Ready To Ship:

Yes

MSRP:

Now: $2.42

Was: $3.45

Qty in Cart: 0

Price:

MSRP:

Now: $2.42

Was: $3.45

Subtotal:
Spacer Washer, 3 Inch ID

AUTOMANN USA

MSRP:

$13.87

Was:

Spacer Washer Bushing For Rear Drive Air* High Quality Spacer Washer* Dimensions: - 4.225 Inch O.D. - 3.000 Inch I.D. - 0.306 Inch Thickness* Sold Individually* Warranty On Spacer Washers Against...

29-05250044

SKU:

29-05250044

Diameter Options:

3 Inch

Truck Class:

Universal

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$13.87

Was:

Qty in Cart: 0

Price:

MSRP:

$13.87

Was:

Subtotal:
Drag Link Assembly 24.75 Inch C To C - 129858 For TAS65 Steering Gear

AFTERMARKET

MSRP:

$305.99

Was:

Drag Link With Tie Rod Ends* High Quality Drag Link* Includes: - Passenger Side Tie Rod End - Driver Side Tie Rod End* 24.75 Inch C To C* Used With Steering Gear* Made In USA* Sold Individually*...

29-05090169

SKU:

29-05090169

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$305.99

Was:

Qty in Cart: 0

Price:

MSRP:

$305.99

Was:

Subtotal:
Hex Head Flange Bolt 5/8-18 X 2-1/4 Inch Grade 8

AUTOMANN USA

MSRP:

$2.47

Was:

Grade 8 Flanged Bolt* High Quality Flange Bolt* 5/8 Inch Bolt Diameter* 2-1/4 Inch Bolt Length* Flanged Bolts Bolt Type-* Thread- 18* Pitch- Fine* Grade- 8* Sold Individually* Warranty On Flange...

29-05250046

SKU:

29-05250046

Length Options:

2 1/4 Inch

Material Options:

Steel

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$2.47

Was:

Qty in Cart: 0

Price:

MSRP:

$2.47

Was:

Subtotal:
Semi Round U Bolt Kit- 3/4 X 3 X 18-3/8 Inch Replaces 15624750, 15643019, 1897594, 793298

AFTERMARKET

MSRP:

$60.99

Was:

3/4 X 3 X 18-3/8 Inch Semi Round Top U Bolt KitStrengthen your truck's suspension with the Semi Round U Bolt Kit 3/4 x 3 x 18-3/8 Inch, designed as a replacement for OEM 15624750, 15643019, 1897594,...

29-05100298

SKU:

29-05100298

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$60.99

Was:

Qty in Cart: 0

Price:

MSRP:

$60.99

Was:

Subtotal:
Bronze Bushing- 1-3/4 X 1-1/2 X 4 Inch

AUTOMANN USA

MSRP:

$11.55

Was:

4 Inch Bronze Bushing Replaces 22285, 22285000Extend the life of your equipment with the Bronze Bushing, 1-3/4 x 1-1/2 x 4 Inch. Built from durable bronze, it provides excellent wear resistance and...

29-05100286

SKU:

29-05100286

Material Options:

Brass

Truck Class:

Universal

Make:

Universal Items

Product Type:

Frame & Chassis

Ready To Ship:

Yes

MSRP:

$11.55

Was:

Qty in Cart: 0

Price:

MSRP:

$11.55

Was:

Subtotal:
Rear Upper Shock Bracket Chalmer

AFTERMARKET

MSRP:

$71.99

Was:

Chalmers Upper Shock Bracket Replaces 800154. 3516765C1Keep your Chalmers suspension aligned with the Rear Upper Shock Bracket. Measuring 2.5 inches center-to-center, it ensures an exact fit for...

29-05100277

SKU:

29-05100277

Material Options:

Steel

Truck Class:

Universal

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$71.99

Was:

Qty in Cart: 0

Price:

MSRP:

$71.99

Was:

Subtotal:
Castellated Nut, 1-1/8 Inch

AUTOMANN USA

MSRP:

$13.87

Was:

1 1/8 Inch.-12 Thread Castle Nut* High Quality Castellated Nut* 1.125 InchSize * 1-5/32 Inch Thickness* TPI- 12* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship &...

09-05250129

SKU:

09-05250129

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$13.87

Was:

Qty in Cart: 0

Price:

MSRP:

$13.87

Was:

Subtotal:
Hydraulic Disc Pad Hardware Kit For D225 Pads

AFTERMARKET

MSRP:

$24.35

Was:

Hardware Kit For D225 Hydraulic Disc Pads* High Quality Hydraulic Disc Hardware Kit * With Bendix Type Piston Caliper* For Brake Pads * Made In USA* Sold Individually* Warranty On Hydraulic Disc...

09-05170269

SKU:

09-05170269

Truck Class:

Universal

Material Options:

Plastic/Poly

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$24.35

Was:

Qty in Cart: 0

Price:

MSRP:

$24.35

Was:

Subtotal:
Castellated Nut, 7/8 Inch

AUTOMANN USA

MSRP:

$6.93

Was:

7/8 Inch -14 Thread Castle Nut* High Quality Castellated Nut* 0.875 Inch Size* 29/32 Inch Thickness * TPI- 14* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship &...

09-05250131

SKU:

09-05250131

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$6.93

Was:

Qty in Cart: 0

Price:

MSRP:

$6.93

Was:

Subtotal:
Castellated Nut, 3/4 Inch

AUTOMANN USA

MSRP:

$4.62

Was:

3/4 Inch -16 Thread Castle Nut* High Quality Castellated Nut* 0.75 Inch Size* 13/16 Inch Thickness* TPI- 16* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship & Material...

09-05250130

SKU:

09-05250130

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$4.62

Was:

Qty in Cart: 0

Price:

MSRP:

$4.62

Was:

Subtotal:
Castellated Nut, 1 Inch

AUTOMANN USA

MSRP:

$10.39

Was:

1 Inch -14 Thread Castle Nut* High Quality Castellated Nut* 1.00 Inch Size* 1 Inch Thickness* TPI- 14* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship & Material From...

09-05250128

SKU:

09-05250128

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$10.39

Was:

Qty in Cart: 0

Price:

MSRP:

$10.39

Was:

Subtotal:
Castellated Nut, 3/8 Inch

AUTOMANN USA

MSRP:

$1.93

Was:

3/8 Inch -24 Thread Castle Nut* High Quality Castellated Nut* 0.375 Inch Size* 13/32 Inch Thickness* TPI- 24* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship & Material...

09-05250127

SKU:

09-05250127

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$1.93

Was:

Qty in Cart: 0

Price:

MSRP:

$1.93

Was:

Subtotal:
Tapered Roll Pin, 1.281 Inch.

AUTOMANN USA

MSRP:

$2.53

Was:

Tapered Brake Shoe Roll Pin* High Quality Tapered Pin* Length- 1.281 Inch. * O.D.- 0.190 Inch And 0.185 Inch* Used On Eaton Drive Axle 16-1/2 Inch X 7 Inch* Sold Individually* Warranty On Tapered...

09-05170295

SKU:

09-05170295

Truck Class:

Universal

Material Options:

Steel

Make:

Universal Items

Product Type:

Frame & Chassis

MSRP:

$2.53

Was:

Qty in Cart: 0

Price:

MSRP:

$2.53

Was:

Subtotal:
Cabin Torque Rod Bushing 2.078 Inch W/ 1.437 OD .625 ID Inch, Replaces 15000896 For Peterbilt

AUTOMANN USA

MSRP:

$13.98

Was:

2.078 Inch Cabin Torque Rod Bushing W/ 1.437 OD & .625 ID Inch Replaces 15000896 Fits PeterbiltMaintain optimal cabin stability and reduce vibrations with the Cabin Torque Rod Bushing, designed for...

01-05090016

SKU:

01-05090016

Material Options:

Steel

Truck Class:

Heavy Duty

Make:

Peterbilt

Product Type:

Frame & Chassis

Ready To Ship:

Yes

Length Options:

2 Inch

MSRP:

$13.98

Was:

Qty in Cart: 0

Price:

MSRP:

$13.98

Was:

Subtotal:

Total: items /

Adding your products to cart

Items 1161 to 1180 of 1890 total

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.