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 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt
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    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/ Flat Top Top Stack Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $2,964.59
    Was: $3,293.99
    Chrome 8 Inch Exhaust Kit With 52 Inch Spool & Long Drop 90 Degree Elbows  - Exhaust Kit  - Kit Includes:  - (2) 8 O.D. X 54 Flat Top Chrome Top Stack   - (2) Exhaust Spool 8 Inch O.D. X 52 Inch Chrome Tapered Top  - (2) Chrome...
    Now: $2,964.59
    Was: $3,293.99
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    Qty in Cart: 0
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    Now: $2,964.59
    Was: $3,293.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  OE Style Elbows  Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  OE Style Elbows  Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
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    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/ Flat Top Top Stack OE Style Elbows Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $2,889.89
    Was: $3,210.99
    BESTfit Chrome 8 Inch Exhaust Kit With 52 Inch Spool Fits Peterbilt  - Made Of High Quality Chrome-Plated Steel - Sleeper Type: Unibilt - Top Cut: Flat Top - Length: 108 Inches - Peterbilt Style Elbows - 52 Inch...
    Now: $2,889.89
    Was: $3,210.99
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    Qty in Cart: 0
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    Now: $2,889.89
    Was: $3,210.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long Drop Elbows No Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long Drop Elbows No Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt
    Add to Cart

    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/ Flat Top Top Stack Long Drop Elbows No Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $2,964.59
    Was: $3,293.99
    Chrome 8 Inch Exhaust Kit With 55 Inch Spool & Long Drop 90 Degree Elbows  - Exhaust Kit  - Kit Includes:  - (2) 8 O.D. X 54 Flat Top Chrome Top Stack   - (2) Exhaust Spool 8 Inch O.D. X 55 Inch Chrome Tapered Top  - (2) Chrome...
    Now: $2,964.59
    Was: $3,293.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $2,964.59
    Was: $3,293.99
    Subtotal:
  • On Sale
    BESTfit 8 X 108 Inch  Flat Top Top Stack  8 Inch 90 Degree Elbow & Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt 378, 379 (1987-2003) 52 Inch Standard Spool Non-Unibilt BESTfit 8 X 108 Inch  Flat Top Top Stack  8 Inch 90 Degree Elbow & Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt 378, 379 (1987-2003) 52 Inch Standard Spool Non-Unibilt
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    BESTfit 8 X 108 Inch Flat Top Top Stack 8 Inch 90 Degree Elbow & Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt 378, 379 (1987-2003) 52 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,842.09
    Was: $4,268.99
    BESTfit Chrome 8 Inch Exhaust Kit With 52 Inch Spool Fits Peterbilt  - Exhaust Kit - Kit Includes:  - (2) Flat Top Stack  - (2) 52 Inch Center Spools   - (2) 8 Inch To 5 Inch Long Drop Elbows  - (4) Exhaust Brackets   -...
    Now: $3,842.09
    Was: $4,268.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,842.09
    Was: $4,268.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/ Flat Top Top Stack Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,198.59
    Was: $3,553.99
    Chrome 8 Inch Exhaust Kit With 52 Inch Spool & Long Drop 90 Degree Elbows  - Exhaust Kit - Made Of Chrome-Plated Steel - Length 108 Inch - (2) Wide Angled Clamp 8 Inch Chrome-Plated Stainless Steel - (2) Exhaust Mount Grommets...
    Now: $3,198.59
    Was: $3,553.99
    Add to Cart
    Qty in Cart: 0
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    Price:
    Now: $3,198.59
    Was: $3,553.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 108 Inch  Flat Top Top Stack  Long 90S & Chrome Tapered Y-Pipe 5 Inch Taper Lock Chrome Tee Peterbilt 378, 379 (1987-2003) 52 Inch Standard Spool Non-Unibilt BESTfit 8-5 X 108 Inch  Flat Top Top Stack  Long 90S & Chrome Tapered Y-Pipe 5 Inch Taper Lock Chrome Tee Peterbilt 378, 379 (1987-2003) 52 Inch Standard Spool Non-Unibilt
    Add to Cart

    BESTfit 8-5 X 108 Inch Flat Top Top Stack Long 90S & Chrome Tapered Y-Pipe 5 Inch Taper Lock Chrome Tee Peterbilt 378, 379 (1987-2003) 52 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,383.09
    Was: $3,758.99
    BESTfit Chrome 8 Inch Exhaust Kit With 52 Inch Spool Fits Peterbilt  - Exhaust Kit - Kit Includes:  - (2) Flat Top Stack  - (2) 52 Inch Center Spools   - (2) 8 Inch To 5 Inch Long Drop Elbows   - (4) Exhaust Brackets  ...
    Now: $3,383.09
    Was: $3,758.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,383.09
    Was: $3,758.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,922.19
    Was: $4,357.99
    Chrome 8 Inch Exhaust Kit With 55 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Exhaust Kit  - Chrome-Plated Steel - Length 102 Inch - (2) Wide Angled Clamp 8 Inch Chrome-Plated Stainless Steel - (2) Exhaust Mount Grommets Pack...
    Now: $3,922.19
    Was: $4,357.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,922.19
    Was: $4,357.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  OE Style Elbows  Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/  Flat Top Top Stack  OE Style Elbows  Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt
    Add to Cart

    BESTfit 8-5 X 108 Inch Chrome Exhaust Kit W/ Flat Top Top Stack OE Style Elbows Peterbilt (2005-Newer) 55 Inch Standard Spool Non-Unibilt

    BESTFIT TRUCK PARTS

    Now: $2,661.29
    Was: $2,956.99
    BESTfit Chrome 8 Inch Exhaust Kit With 55 Inch Spool Fits Peterbilt  - Made Of High Quality Chrome-Plated Steel - Sleeper Type: Standard - Top Cut: Flat Top - Length: 108 Inches - Peterbilt Style Elbows - 55 Inch...
    Now: $2,661.29
    Was: $2,956.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $2,661.29
    Was: $2,956.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack Long Drop Elbows No Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,164.39
    Was: $3,515.99
    Chrome 8 Inch Exhaust Kit With 52 Inch Spool & Long Drop 90 Degree Elbows  - Exhaust Kit  - Chrome-Plated Steel - Length 102 Inch - (2) Wide Angled Clamp 8 Inch Chrome-Plated Stainless Steel - (2) Exhaust Mount Grommets Pack Of 4...
    Now: $3,164.39
    Was: $3,515.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,164.39
    Was: $3,515.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  OE Style Elbows  Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  OE Style Elbows  Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack OE Style Elbows Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $2,855.69
    Was: $3,172.99
    Chrome 8 Inch Exhaust Kit With 55 Inch Spool & 58 Degree Elbow  - Made Of High Quality Chrome-Plated Steel - Length 102 Inch - 2- 01-0800800- Wide Angled Clamp 8 Inch Chrome-Plated Stainless Steel - 2- 01-0800003- Exhaust Mount...
    Now: $2,855.69
    Was: $3,172.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $2,855.69
    Was: $3,172.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long Drop Elbows No Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long Drop Elbows No Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack Long Drop Elbows No Tee Peterbilt (2005-Newer) 55 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,164.39
    Was: $3,515.99
    Chrome 8 Inch Exhaust Kit With 55 Inch Spool & Long Drop 90 Degree Elbows  - Exhaust Kit  - Chrome-Plated Steel - Length 102 Inch - (2)- 01-0800800- Wide Angled Clamp 8 Inch Chrome-Plated Stainless Steel - (2)- 01-0800003-...
    Now: $3,164.39
    Was: $3,515.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,164.39
    Was: $3,515.99
    Subtotal:
  • On Sale
    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/  West Coast Turn Top Stack  Long 90S & Chrome Tapered Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt
    Add to Cart

    BESTfit 8-5 X 102 Inch Chrome Exhaust Kit W/ West Coast Turn Top Stack Long 90S & Chrome Tapered Y-Pipe 8 Inch Taper Lock Chrome Tee Peterbilt (1987-2003) 52 Inch Standard Spool Unibilt

    BESTFIT TRUCK PARTS

    Now: $3,922.19
    Was: $4,357.99
    Chrome 8 Inch Exhaust Kit With 52 Inch Spool, Long Drop Elbows & 5 Inch T Pipe  - Exhaust Kit  - Chrome-Plated Steel - Length 102 Inch - (2) Wide Angled Clamp 8 Inch Chrome-Plated Stainless Steel - (2) Exhaust Mount Grommets Pack...
    Now: $3,922.19
    Was: $4,357.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $3,922.19
    Was: $4,357.99
    Subtotal:
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