Peterbilt 357/378 Exhaust Kits

Peterbilt 357/378 Exhaust Kits

Peterbilt 357/378 Exhaust Kits

Make upgrading your exhaust a breeze with Peterbilt 378 aftermarket exhaust kits. Shop for custom, chrome, and aftermarket exhaust kits, designed to fit your Peterbilt. We have exhaust kits and parts that will fit your big rig and budget.
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  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt
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    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,396.59
    Was: $3,773.99
    Chrome 7 Inch Exhaust Kit With 55 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 2 - 01-08017000- Chrome Long Leg 7 Inch Elbow With Tapered Top 7 Inch O.D. Bottom - 1 -...
    Now: $3,396.59
    Was: $3,773.99
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    Now: $3,396.59
    Was: $3,773.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,396.59
    Was: $3,773.99
    Chrome 7 Inch Exhaust Kit With 52 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 2 - 01-08017000- Chrome Long Leg 7 Inch Elbow With Tapered Top 7 Inch O.D. Bottom - 1 -...
    Now: $3,396.59
    Was: $3,773.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,396.59
    Was: $3,773.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Bull Hauler Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,522.59
    Was: $3,913.99
    Chrome 7 Inch Exhaust Kit With 55 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 4 - 01-0800700- Wide Angled Clamp 7 Inch Peterbilt Chrome-Plated Stainless Steel - 2 -...
    Now: $3,522.59
    Was: $3,913.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,522.59
    Was: $3,913.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Bull Hauler Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,522.59
    Was: $3,913.99
    Chrome 7 Inch Exhaust Kit With 52 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 4 - 01-0800700- Wide Angled Clamp 7 Inch Peterbilt Chrome-Plated Stainless Steel - 2 -...
    Now: $3,522.59
    Was: $3,913.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,522.59
    Was: $3,913.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Bull Hauler Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,464.09
    Was: $3,848.99
    Chrome 7 Inch Exhaust Kit With 52 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 2 - 01-08017000- Chrome Long Leg 7 Inch Elbow With Tapered Top 7 Inch O.D. Bottom - 1 -...
    Now: $3,464.09
    Was: $3,848.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,464.09
    Was: $3,848.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Bull Hauler Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Bull Hauler Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,464.09
    Was: $3,848.99
    Chrome 7 Inch Exhaust Kit With 55 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 2 - 01-08017000- Chrome Long Leg 7 Inch Elbow With Tapered Top 7 Inch O.D. Bottom - 1 -...
    Now: $3,464.09
    Was: $3,848.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,464.09
    Was: $3,848.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Miter Cut Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Miter Cut Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Miter Cut Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,392.99
    Was: $3,769.99
    Chrome 7 Inch Exhaust Kit With 55 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 4 - 01-0800700- Wide Angled Clamp 7 Inch Peterbilt Chrome-Plated Stainless Steel - 2 -...
    Now: $3,392.99
    Was: $3,769.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,392.99
    Was: $3,769.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Miter Cut Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Miter Cut Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Miter Cut Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,392.99
    Was: $3,769.99
    Chrome 7 Inch Exhaust Kit With 52 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 4 - 01-0800700- Wide Angled Clamp 7 Inch Peterbilt Chrome-Plated Stainless Steel - 2 -...
    Now: $3,392.99
    Was: $3,769.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,392.99
    Was: $3,769.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Flat Top Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,392.99
    Was: $3,769.99
    Chrome 7 Inch Exhaust Kit With 55 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 4 - 01-0800700- Wide Angled Clamp 7 Inch Peterbilt Chrome-Plated Stainless Steel - 2 -...
    Now: $3,392.99
    Was: $3,769.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,392.99
    Was: $3,769.99
    Subtotal:
  • On Sale
    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 7-5 X 102 Inch Chrome Exhaust Kit W/ Flat Top Top Stack Long 90S & Chrome Tapered Y-Pipe 7 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,392.99
    Was: $3,769.99
    Chrome 7 Inch Exhaust Kit With 52 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 4 - 01-0800700- Wide Angled Clamp 7 Inch Peterbilt Chrome-Plated Stainless Steel - 2 -...
    Now: $3,392.99
    Was: $3,769.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,392.99
    Was: $3,769.99
    Subtotal:
  • On Sale
    7-5 X 108 Inch Chrome Flat Top Stack Exhaust Kit W/ Long 90S & Tapered Y-Pipe by BESTfit 7-5 X 108 Inch Chrome Flat Top Stack Exhaust Kit W/ Long 90S & Tapered Y-Pipe by BESTfit
    Add to Cart

    7-5 X 108 Inch Chrome Flat Top Stack Exhaust Kit W/ Long 90S & Tapered Y-Pipe by BESTfit

    BESTFIT TRUCK PARTS

    Now: $3,639.59
    Was: $4,043.99
    BESTfit Chrome 7 Inch Exhaust Kit With 52 Inch Spool Fits Peterbilt 378 & 379Introducing BESTfit CHROME EXHAUST KITS! These Kits Are Installer-Friendly, Produced With All High Quality Components, Offer The Best Tee Pipe Options In The Industry, And Have...
    Now: $3,639.59
    Was: $4,043.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,639.59
    Was: $4,043.99
    Subtotal:
  • On Sale
    8 X 96 Inch Chrome West Coast Turnout Stack Exhaust Kit W/ Long 90S & 8 Inch Y-Pipe by BESTfit 8 X 96 Inch Chrome West Coast Turnout Stack Exhaust Kit W/ Long 90S & 8 Inch Y-Pipe by BESTfit
    Add to Cart

    8 X 96 Inch Chrome West Coast Turnout Stack Exhaust Kit W/ Long 90S & 8 Inch Y-Pipe by BESTfit

    BESTFIT TRUCK PARTS

    Now: $3,857.39
    Was: $4,285.99
    BESTfit Chrome 8 Inch Exhaust Kit With 52 Inch Spool Fits PeterbiltIntroducing BESTfit CHROME EXHAUST KITS! These Kits Are Installer-Friendly, Produced With All High Quality Components, Offer The Best Tee Pipe Options In The Industry, And Have A...
    Now: $3,857.39
    Was: $4,285.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,857.39
    Was: $4,285.99
    Subtotal:
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