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Peterbilt 357/378 Leaf Springs, Hangers & Acc.

  • Product
  • Qty in Cart
  • Quantity
  • Price
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  • Steel Leaf Spring Suspension 27 Inch Axis 1 & 32 Inch Axis 2 Length

    Steel Leaf Spring Suspension 27 Inch Axis 1 & 32 Inch Axis 2 Length

    DAYTON / DORMAN

    $1,514.99
    Steel Leaf Spring Suspension W/ 5 Leaves & 2 Threaded M32 X 4 Inch Diameter Bushing Pins* High Quality Leaf Spring Suspension* Made Of Steel* Full Taper Front Axle Type* Includes:  - (2) Up Turned...
    29-05090259
    SKU:
    29-05090259
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Make:
    Universal Items
    $1,514.99
    Qty in Cart: 0
    Price:
    $1,514.99
    Subtotal:
  • Front Spring Hanger, Rear Of Steer For Peterbilt

    Front Spring Hanger, Rear Of Steer For Peterbilt

    AFTERMARKET

    $117.99 - $123.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 320 1988 thru 2018* Fits Peterbilt 330 1995 thru 2005* Fits Peterbilt 335 2005 thru 2010* Fits Peterbilt 337 2011 thru 2022* Fits Peterbilt...
    PPR_300529
    SKU:
    PPR_300529
    Truck Class:
    Heavy Duty
    Height Options:
    4 Inch
    Product Type:
    Frame & Chassis
    Material Options:
    Steel
    Make:
    Peterbilt
    $117.99 - $123.99
    Qty in Cart: 0
    Price:
    $117.99 - $123.99
    Subtotal:
  • BESTfit Wear Pad Assembly With 5/8 Inch Mounting, Replaces E-7862, E7862 For Peterbilt W/ Air Trac Suspension Hangers

    BESTfit Wear Pad Assembly With 5/8 Inch Mounting, Replaces E-7862, E7862 For Peterbilt W/ Air Trac Suspension Hangers

    BESTFIT TRUCK PARTS

    $104.99
    Wear Pad Assembly With 5/8 Inch Mounting By BESTfit Replaces E-7862, E7862 Fits Peterbilt W/ Air Trac Suspension HangersThis Wear Pad Assembly is designed for Peterbilt Air Trac Suspension Hangers...
    01-051013
    SKU:
    01-051013
    Product Type:
    Frame & Chassis
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Position:
    Kit Full
    Location:
    Made In USA
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Spring Poly Bushing Kit W/ Lock Nut & Spring Bolt, Replaces R307840, CQ70782B, 03AL2 03-AL2 For Peterbilt

    Spring Poly Bushing Kit W/ Lock Nut & Spring Bolt, Replaces R307840, CQ70782B, 03AL2 03-AL2 For Peterbilt

    AFTERMARKET

    $97.99
    Spring Poly Bushing Kit W/ Compression Washer, Sleeve Spring Eye & Eye Washer Poly Replaces R307840, CQ70782B Fits PeterbiltThe Spring Poly Bushing Kit is engineered to provide durable and reliable...
    01-05100010
    SKU:
    01-05100010
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $97.99
    Qty in Cart: 0
    Price:
    $97.99
    Subtotal:
  • BESTfit 3 Leaf Parabolic Spring - 8,200 lbs Capacity For Peterbilt 375/377, 357/378 SFA & 379 Replaces 2001799

    BESTfit 3 Leaf Parabolic Spring - 8,200 lbs Capacity For Peterbilt 375/377, 357/378 SFA & 379 Replaces 2001799

    BESTFIT TRUCK PARTS

    $657.99
    3 Leaf Parabolic Spring W/ 8200 Lb. Capacity By BESTfit Replaces 2001799 Fits Replaces 2001799Restore your truck's suspension performance with the BESTfit 4 Inch Wide 3-Leaf Parabolic Spring,...
    01-050900017
    SKU:
    01-050900017
    Width Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Make:
    Peterbilt
    Rating:
    8000 LBS
    Material Options:
    Steel
    $657.99
    Qty in Cart: 0
    Price:
    $657.99
    Subtotal:
  • Front Spring Hanger 9.437 Inch Replaces 457361, 45736001, 34013095

    Front Spring Hanger 9.437 Inch Replaces 457361, 45736001, 34013095

    AFTERMARKET

    $198.99
    Replacement Hendrickson Suspension Spring Hanger* High Quality Spring Hanger * 9.437 Inch C To C Length* 0.910 Inch Offset* Made In USA* Sold Individually* Warranty On Spring Hangers Against Defects...
    29-05100064
    SKU:
    29-05100064
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Length Options:
    9 1/4 Inch
    $198.99
    Qty in Cart: 0
    Price:
    $198.99
    Subtotal:
  • Front of Rear Leaf Spring Hanger 8 Inch For Air Trac Peterbilt

    Front of Rear Leaf Spring Hanger 8 Inch For Air Trac Peterbilt

    AFTERMARKET

    $547.99
    Front Of Rear 8 Inch Leaf Spring Hanger W/ 3/4 Inch FlangeThe 8-inch Leaf Spring Hanger for the front of the rear spring is an essential suspension component designed to provide secure mounting and...
    01-05100025
    SKU:
    01-05100025
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $547.99
    Qty in Cart: 0
    Price:
    $547.99
    Subtotal:
  • Leaf Spring Wear Pad 4.25 Inch - 306219 For Peterbilt Rear Air Trac

    Leaf Spring Wear Pad 4.25 Inch - 306219 For Peterbilt Rear Air Trac

    AFTERMARKET

    $131.99
    2.5 Inch C To C Leaf Spring Wear Pad Replaces 03-06219Ensure long-lasting suspension reliability with the Leaf Spring Wear Pad 4.25 Inch, engineered to minimize wear and tear on leaf springs. This...
    01-05100020
    SKU:
    01-05100020
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit Shackle Side Bar 3.5 Inch Replaces 201154 For Peterbilt W/ 4 Inch Wide Front Springs

    BESTfit Shackle Side Bar 3.5 Inch Replaces 201154 For Peterbilt W/ 4 Inch Wide Front Springs

    BESTFIT TRUCK PARTS

    $25.43
    BESTfit 3.50 Inch C To C Shackle Side Bar Replaces 02-01154The Bestfit Shackle Side Bar 3.5 Inch is a durable suspension component designed to enhance the performance and stability of your truck's...
    01-05090003
    SKU:
    01-05090003
    Length Options:
    5 3/4 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $25.43
    Qty in Cart: 0
    Price:
    $25.43
    Subtotal:
  • Spring Eye Sleeve 5.75 Inch,1.75 OD,1.016 ID For Peterbilt Air Leaf Models

    Spring Eye Sleeve 5.75 Inch,1.75 OD,1.016 ID For Peterbilt Air Leaf Models

    AUTOMANN USA

    $20.39
    Peterbilt Spring Eye Sleeve Replaces 0301669, 0307147Upgrade your truck's suspension with the Spring Eye Sleeve featuring a 5.75-inch overall length, 1.75-inch outer diameter, and 1.016-inch inner...
    01-05100023
    SKU:
    01-05100023
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    5 3/4 Inch
    Diameter Options:
    1 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $20.39
    Qty in Cart: 0
    Price:
    $20.39
    Subtotal:
  • Poly Leaf Spring Eye Bushing - D13 For Peterbilt Air Leaf Models, Eye Cast

    Poly Leaf Spring Eye Bushing - D13 For Peterbilt Air Leaf Models, Eye Cast

    BESTFIT TRUCK PARTS

    $13.99
    Peterbilt Spring Eye Bushing Replaces D13, E7509, E-7509, R307509The Poly Spring Eye Bushing D13 offers a durable and reliable solution for leaf spring suspensions on heavy-duty trucks. Made from...
    01-05100018
    SKU:
    01-05100018
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Diameter Options:
    1 3/4 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $13.99
    Qty in Cart: 0
    Price:
    $13.99
    Subtotal:
  • BESTfit 4 Inch Wide Heavy Duty Aluminum Alloy Axle Shims - Set Of 6 For Peterbilt

    BESTfit 4 Inch Wide Heavy Duty Aluminum Alloy Axle Shims - Set Of 6 For Peterbilt

    BESTFIT TRUCK PARTS

    $57.99 - $83.99
    Each shim measures 4 inches wide with a 6.5-inch spring pad length and is available in multiple degree options, allowing for accurate caster angle correction to help reduce vibration and enhance...
    PPR_202836
    SKU:
    PPR_202836
    Truck Class:
    Heavy Duty
    Width Options:
    4 Inch
    Material Options:
    Aluminum
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $57.99 - $83.99
    Qty in Cart: 0
    Price:
    $57.99 - $83.99
    Subtotal:
  • FREE SHIPPING
    BESTfit Single Leaf C Spring, Replaces C81-6001, C81-6001A For Peterbilt Flex Air Suspension

    BESTfit Single Leaf C Spring, Replaces C81-6001, C81-6001A For Peterbilt Flex Air Suspension

    BESTFIT TRUCK PARTS

    $615.99
    Single Leaf C Spring By BESTfit Replaces C81-6001, C81-6001A Fits Peterbilt Flex Air SuspensionThe BESTfit Single Leaf C Spring Hanger is a durable and precise replacement designed to fit Peterbilt...
    01-051040K01
    SKU:
    01-051040K01
    Truck Class:
    Heavy Duty
    Width Options:
    4 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $615.99
    Qty in Cart: 0
    Price:
    $615.99
    Subtotal:
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Adding your products to cart

Shop for Aftermarket Leaf Springs, Hangers, and Accessories for the Peterbilt 357/378. These components are critical for enhancing the overall ride quality and providing better control for the driver even on difficult road conditions. Our leaf spring products are made from a durable, corrosion-resistant material that is made to extend the lifespan of the product and give a better value. Perfect for maintenance or upgrades, they prioritize safety, comfort, and reliability. Elevate your ride today!

Frequently Asked Questions About Peterbilt 357/378 Leaf Springs, Hangers & Acc.

Will these leaf springs, hangers, and accessories fit my Peterbilt 357 or 378?

Suspension components can vary significantly based on your truck's specific axle configuration, GVWR rating, and the original suspension setup installed at the factory. Before ordering, check your truck's spring capacity, leaf count, and hanger spacing against the product specifications listed, or contact our parts specialists with your VIN or chassis details to confirm proper fit.

What is the difference between the leaf springs, hangers, and other accessories offered in this category?

Leaf springs are the load-bearing components that support your truck's weight and absorb road shock, hangers are the mounting brackets that secure the springs to the frame, and accessories include related hardware such as bushings, U-bolts, spring pins, shackles, and wear plates needed for a complete suspension repair or rebuild.

How do I know if my leaf springs or hangers need to be replaced?

Common signs include visible cracks or rust on the spring leaves, sagging or uneven ride height, excessive bouncing or harsh ride quality, clunking or squeaking noises from the suspension area, and visible wear or looseness at the hanger mounting points. If you notice any of these symptoms, it is a good idea to have the suspension inspected before the issue affects handling or leads to further component damage.

Can I install these parts myself, or do I need a professional mechanic?

Leaf spring and hanger replacement involves heavy components under tension and typically requires the truck to be properly lifted and supported, along with specific tools for removing and torquing hardware to spec. While experienced DIYers with the right equipment can handle some of this work, many customers choose to have a qualified truck repair shop perform the installation to ensure everything is torqued and aligned correctly.

What materials and finishes are available for these suspension parts?

Leaf springs are typically made from heat-treated alloy steel for strength and durability, while hangers and brackets are commonly cast or fabricated steel components. Finish options vary by product and may include options such as raw steel, painted, or powder-coated hangers depending on the manufacturer and part number, so check the individual product listing for specific finish details.


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