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- Peterbilt 320 System
- 357,378,379 Single Exhaust Layout
- 357,378,379 Dual Exhaust Layout
- 359 Dual Exhaust
- 377 Dual Exhaust
- 379 Single Exhaust Right Side
- 379 Dual Exhaust System
- 379 Daycab
- 387 Dual Exhaust
- 387 Single Exhaust
- PETERBILT Aluminized Elbows
- PETERBILT Chrome Elbows & Reducers
- PETERBILT Y-Pipes
- SHOP BY MUFFLER SIZE
- Universal Mufflers & Patches
- Type 1 End In-End Out Centered
- Type 2 End In-End Out Offset Ends
- Type 2A - Dual End IN - End OUT
- Type 3 - IN and OUT Same End
- Type 4 Side IN - End OUT
- Type 6 End IN-Side Out
- Type 7 End In-Dual Side Out
- High Flow Muffer
- Quiet Performance Muffler
- Type 1 Resonators
- Internal Mufflers
- Muffler Clamps
- Muffler Guards
- Muffler Hangers
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Galvanized Steel Flex .018
Galvanized Conventional Flex
- .018 Thick Strip (magnetic) (GOOD)