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Peterbilt 379 Frame Crossmembers & Covers

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Rear 12 Leaf HD Spring 12/PD - 27,000 Lbs. Capacity For Hendrickson

    Rear 12 Leaf HD Spring 12/PD - 27,000 Lbs. Capacity For Hendrickson

    AFTERMARKET

    $890.99
    Hendrickson Heavy Duty Multi-Leaf Spring* High Quality Leaf Spring* Dimensions:  - Width- 4 Inch  - Arch- 2-1/2 Inch* Spring Type- Multi Leaf Spring* Spring Eye- 1* Number Of Leaves- 12* Capacity-...
    29-05100037
    SKU:
    29-05100037
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Rating:
    25000 LBS
    Width Options:
    4 Inch
    Make:
    Trailer
    $890.99
    Qty in Cart: 0
    Price:
    $890.99
    Subtotal:
  • Center Beam Bushing 2.5 ID X 4 .75 OD X 12 Inch

    Center Beam Bushing 2.5 ID X 4 .75 OD X 12 Inch

    AFTERMARKET

    $201.99
    Center Beam Bushing With End Loose Plug* High Quality Bushing* Dimensions:  - 2.5 Inch ID   - 4.75 Inch OD  - 12 Inch Length* Includes Bushing End Loose Plug* Made In USA* Sold Individually* Warranty...
    29-05100190
    SKU:
    29-05100190
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    12 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $201.99
    Qty in Cart: 0
    Price:
    $201.99
    Subtotal:
  • 12 Leaf Spring 10/2PD/2 - 53260 For Hendrickson

    12 Leaf Spring 10/2PD/2 - 53260 For Hendrickson

    AFTERMARKET

    $693.99
    Multi- Leaf Spring With Radius Rod - 12 Leaves* High Quality Leaf Spring* 3 Inch Width* 30 1/4 Inch S.E./L.E.* 6 1/4 Inch Arch* Spring Type- Multi Leaf Spring* Spring Eye- No* Number Of Leaves-12*...
    29-05100043
    SKU:
    29-05100043
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Diameter Options:
    9 Inch
    Width Options:
    3 Inch
    Rating:
    10000 LBS
    Make:
    Trailer
    $693.99
    Qty in Cart: 0
    Price:
    $693.99
    Subtotal:
  • Steering Tie Rod End 1-1/4 Inch-12 Passenger Side Thread W/ 1/2 Inch Lock Bolt Slot

    Steering Tie Rod End 1-1/4 Inch-12 Passenger Side Thread W/ 1/2 Inch Lock Bolt Slot

    AFTERMARKET

    $60.99
    5-3/4 Inch C To End Tie Rod End* High Quality Tie Rod End* Dimensions:  - 5-3/4In C To End  - 1-1/4In-12 Rh Thread* 1-1/4In-12 Rh Thread* With 1/2In Lock Bolt Slot* Height Of Taper- 2 Inch* Sold...
    29-05091223
    SKU:
    29-05091223
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • End Beam Bushing 2-1/2 Inch ID x 4-3/8 Inch OD x 5-1/4 Inch

    End Beam Bushing 2-1/2 Inch ID x 4-3/8 Inch OD x 5-1/4 Inch

    AFTERMARKET

    $89.99
    Hendrickson End Beam Bushing* High Quality Beam Bushing* Rubber* Dimensions:  - 2 1/2 Inch ID   - 4 3/8 Inch OD   - 5 1/4 Length  - 3 1/2 Inch Sleeve* Made In USA* Sold Individually* Warranty On Beam...
    29-05100184
    SKU:
    29-05100184
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $89.99
    Qty in Cart: 0
    Price:
    $89.99
    Subtotal:
  • Rear Load Cushion - 70 Durometer For Hendrickson RS 460-520/ 650/ 850/100/1200 Series.

    Rear Load Cushion - 70 Durometer For Hendrickson RS 460-520/ 650/ 850/100/1200 Series.

    AFTERMARKET

    $150.99
    Hendrickson Load Cushion Suspension* High Quality Load Cushion* Dimensions:  - 3.00 Inch Hole Size   - 3.937 Inch Height  - 12.00 Inch Overall Length* 70 Durometer* Made In USA* Sold Individually*...
    29-05100139
    SKU:
    29-05100139
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $150.99
    Qty in Cart: 0
    Price:
    $150.99
    Subtotal:
  • Rear 12 Leaf Spring 12/PD - 25,000 Lbs. Capacity

    Rear 12 Leaf Spring 12/PD - 25,000 Lbs. Capacity

    AFTERMARKET

    $778.99
    Rear 12 Leaf Spring 12/PD* High Quality Leaf Spring* 4 Inch Width* 17 Inch S.E.* 20 3/8 Inch L.E.* 2 13/16 Inch Arch* Spring Type- Multi-Leaf Spring* Number Of Leaves- 12* Capacity- 25000* Bronze...
    29-05100133
    SKU:
    29-05100133
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $778.99
    Qty in Cart: 0
    Price:
    $778.99
    Subtotal:
  • Rear 10 Leaf Spring - 15,500 lbs. Capacity For Hendrickson

    Rear 10 Leaf Spring - 15,500 lbs. Capacity For Hendrickson

    AFTERMARKET

    $626.99
    Hendrickson Leaf Spring -10 Leaves Replaces Part 45027* High Quality Leaf Spring* 4 Inch Width* 17 1/16 Inch S.E.* 20 11/16 Inch L.E.* 3-1/4 Inch Arch* Spring Eye- 1* Number Of Leaves- 10* Capacity-...
    29-05100125
    SKU:
    29-05100125
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $626.99
    Qty in Cart: 0
    Price:
    $626.99
    Subtotal:
  • Rear 12 Leaf Spring 12/PD - 47057, 350033804, 85102483 For Hendrickson

    Rear 12 Leaf Spring 12/PD - 47057, 350033804, 85102483 For Hendrickson

    AFTERMARKET

    $822.99
    Hendrickson Tandem Two RT & RT2 Rear Multi-Leaf SpringThe Hendrickson Leaf Spring replaces the tandem suspensions on RT and RT2 with 33-inch hanger spacing. It has 12 leaves plus a pad and a capacity...
    29-05100004
    SKU:
    29-05100004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $822.99
    Qty in Cart: 0
    Price:
    $822.99
    Subtotal:
  • Leaf Spring Repair Plate 2-1/2 X 0.447 X 60 Inch W/ 6 Inch Arch

    Leaf Spring Repair Plate 2-1/2 X 0.447 X 60 Inch W/ 6 Inch Arch

    AFTERMARKET

    $85.99
    Spring Steel Repair Plate With No Center Hole* High Quality Repair Plate* Dimensions:  - 2 1/2 Inch Plate Width  - 0.447 Inch Plate Thickness  - 60 Inch Overall Length  - 5.187 Inch Arch* Spring...
    29-05100216
    SKU:
    29-05100216
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $85.99
    Qty in Cart: 0
    Price:
    $85.99
    Subtotal:
  • End Beam Bushing 70 Duro - 2-1/2 ID x 4-3/8 OD x 5-1/4 Inch

    End Beam Bushing 70 Duro - 2-1/2 ID x 4-3/8 OD x 5-1/4 Inch

    AFTERMARKET

    $59.99
    End Beam Bushing With 3-1/2 Inch Sleeve* High Quality End Beam Bushing* Rubber* Dimensions:  - 2 1/2 Inch ID   - 4 3/8 Inch OD   - 5 3/4 Inch Length  - 4 1/4 Inch Sleeve* Made In USA* Sold...
    29-05100185
    SKU:
    29-05100185
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $59.99
    Qty in Cart: 0
    Price:
    $59.99
    Subtotal:
  • Rear 12 Leaf Spring 12/PD - 22,400 Lbs. Capacity

    Rear 12 Leaf Spring 12/PD - 22,400 Lbs. Capacity

    AFTERMARKET

    $678.99
    Rear Leaf Spring 12/PD* High Quality Leaf Spring* 4 Inch Width* 17 1/16 S.E. * 20 11/16 I.E.* 2 1/2 Inch Arch* Spring Type- Multi-Leaf Spring* Spring Eye- 1* Number Of Leaves- 12* Capacity- 22400 Lbs...
    29-05100154
    SKU:
    29-05100154
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $678.99
    Qty in Cart: 0
    Price:
    $678.99
    Subtotal:
  • Rear 8 Leaf Spring PD/8 - 8,500 Lbs. Capacity

    Rear 8 Leaf Spring PD/8 - 8,500 Lbs. Capacity

    AFTERMARKET

    $762.99
    Rear Leaf Spring PD/8 - 8 Leaves Replaces 47475. 350030035* High Quality Leaf Spring* 3 Inch Width * 19 Inch S.E.* 24 1/4 Inch I.E.* Arch- 2-7/8* Spring Type- Multi-Leaf Spring* Spring Eye-1* Number...
    29-05100140
    SKU:
    29-05100140
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $762.99
    Qty in Cart: 0
    Price:
    $762.99
    Subtotal:
  • Rear Load Cushion For Hendrickson Haulmaax

    Rear Load Cushion For Hendrickson Haulmaax

    AFTERMARKET

    $155.99
    Hendrickson Load Cushion Suspension Replaces E14374, 59257000, 64179002, 2586433C1* High Quality Load Cushion* Threads- 1/2 Inch- 13* (4) Flanged Lock Nut* Made In USA* Sold Individually* Warranty On...
    29-05100136
    SKU:
    29-05100136
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $155.99
    Qty in Cart: 0
    Price:
    $155.99
    Subtotal:
  • Rear 13 Leaf Spring - 17,500 Lbs. Capacity For Hendrickson

    Rear 13 Leaf Spring - 17,500 Lbs. Capacity For Hendrickson

    AFTERMARKET

    $795.99
    Hendrickson Leaf Spring - 13 Leaves Replaces Part 45121* High Quality Leaf Spring* 4 Inch Width* 17 1/8 Inch S.E.* 28-1/2 Inch L.E.* Spring Type- Multi- Leaf Spring * Spring Eye- 1* Number Of Leaves-...
    29-05100126
    SKU:
    29-05100126
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $795.99
    Qty in Cart: 0
    Price:
    $795.99
    Subtotal:
  • Rear 10 Leaf Spring - 1500 Capacity For Hendrickson

    Rear 10 Leaf Spring - 1500 Capacity For Hendrickson

    AFTERMARKET

    $552.99
    10 Leaf Spring Replaces 45027000, H45027000, 471347C91* High Quality Rear Leaf Spring* 4 Inch Width* S.E.- 17 1/16 Inch * L.E.- 20 11/16 Inch* Arch 3 1/4 Inch* Multi-Leaf Spring* Number Of Leaves-...
    29-05100005
    SKU:
    29-05100005
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Width Options:
    4 Inch
    $552.99
    Qty in Cart: 0
    Price:
    $552.99
    Subtotal:
  • Radius Rod Bushing 2.5 ID X 3.625 OD X 2.5 Inch

    Radius Rod Bushing 2.5 ID X 3.625 OD X 2.5 Inch

    AFTERMARKET

    $82.99
    Radius Rod Bushing Universal* High Quality Radius Rod Bushing* Dimensions:  - 2.50 Inch Length  - 3.625 Inch O.D.   - 2.50 Inch I.D.* Made In USA* Sold Individually* Warranty On Radius Rod Bushings...
    09-05250062
    SKU:
    09-05250062
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $82.99
    Qty in Cart: 0
    Price:
    $82.99
    Subtotal:
  • Camshaft Bushing 1.28 ID X 1.885 OD X 1.32 Inch For Eaton Steer Axle

    Camshaft Bushing 1.28 ID X 1.885 OD X 1.32 Inch For Eaton Steer Axle

    AUTOMANN USA

    $3.79
    Camshaft Bushing Replacement Part For R627029, C66837, 28-1264* High Quality Camshaft Bushing* Dimensions:  - 1.28 Inch I.D.   - 1.885 Inch O.D.  - 1.32 Inch Length* Sold Individually* Warranty On...
    09-05170194
    SKU:
    09-05170194
    Material Options:
    Plastic/Poly
    Diameter Options:
    1 1/4 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $3.79
    Qty in Cart: 0
    Price:
    $3.79
    Subtotal:
  • Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 48 Inch OAL W/ 3.31 Inch Arch

    Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 48 Inch OAL W/ 3.31 Inch Arch

    AFTERMARKET

    $76.99
    Spring Steel Repair Plate With 12.5 MM Center Bolt Holes* High Quality Spring Leaf Plate* Dimensions:  - Plate Width- 70Mm  - Plate Thickness- 11Mm  - Divided Length A And B- 24 Inch  - Overall...
    09-05100016
    SKU:
    09-05100016
    Material Options:
    Steel
    Length Options:
    48 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $76.99
    Qty in Cart: 0
    Price:
    $76.99
    Subtotal:
  • Main Leaf For 12 Leaf Spring For Hendrickson

    Main Leaf For 12 Leaf Spring For Hendrickson

    AFTERMARKET

    $186.99
    Hendrickson Main Leaf* High Quality Main Leaf* For 12 Leaf Spring* Made In USA* Sold Individually* Warranty On Main Leafs Against Defects In Workmanship & Material From Date Of Purchase*** High...
    09-05100003
    SKU:
    09-05100003
    Material Options:
    Steel
    Length Options:
    27 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $186.99
    Qty in Cart: 0
    Price:
    $186.99
    Subtotal:
  • Total: items /

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Discover Peterbilt 379 Rear Crossmember Designs

Reinforce your truck's structural support with Peterbilt 379 Frame Crossmembers & Covers. This lineup of aftermarket products includes high-quality fiberglass and stainless steel rear frame covers, fuel tank filler frames, rear frame covers, replacement cross members, and other essential components to keep your truck's frame in top condition. Handle the demands of commercial hauling with the best-in-class cross members featuring durable, stainless steel materials, corrosion-resistant finishes, and easy installation instructions. If you're looking for improved structural integrity for your frame, secure mounting points, and better load management, invest in quality frame cross members and covers to bolster your Peterbilt 379.

Frequently Asked Questions About Peterbilt 379 Frame Crossmembers & Covers

What are frame crossmembers and covers used for on a Peterbilt 379?

Frame crossmembers are structural components that run horizontally between the frame rails, providing rigidity and support to the chassis. Covers are typically used to shield these crossmembers or nearby frame sections from road debris, moisture, and corrosion while also giving the underside of the truck a cleaner, finished appearance.

Will these crossmembers and covers fit my specific Peterbilt 379 model year?

Peterbilt 379 frames can vary slightly depending on the model year and how the truck was originally configured, so it is important to check listed specifications such as frame rail width, mounting hole patterns, and wheelbase before purchasing. If you are unsure about fitment, reach out to our team with your VIN or frame measurements so we can help confirm compatibility.

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

Most crossmembers and covers in this category are made from steel or aluminum, depending on the specific part and intended use. Steel components typically offer higher strength for structural applications, while aluminum covers are often chosen for reduced weight and natural corrosion resistance. Finish options may include raw metal, painted, or powder-coated surfaces to help protect against rust and wear from road exposure.

Are these parts a direct bolt-on replacement, or will modifications be needed for installation?

Many crossmembers and covers are designed to bolt into the existing mounting points on the frame, but installation can vary based on the part and whether your truck has had prior frame modifications. We recommend reviewing the product description for specific installation notes and having a qualified technician inspect your frame before installation, especially for structural crossmembers.

Do frame crossmembers affect the structural integrity or warranty of my truck?

Crossmembers play a role in the overall strength and stability of the frame, so it is important to select a part rated for your truck's application and to have it installed correctly. Improper installation or using a part not suited for your frame configuration can affect performance and safety. If your truck is still under any manufacturer or aftermarket warranty, check with the applicable warranty provider before making frame-related changes.


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