Stepvan Exhaust Systems & Components

• Aluminized Muffler

  Part Number: 57-425

  Aluminized muffler, (2) 2-1/2" inlet, (1) 3" outlet, '96-On GM/Workhorse

  $205.86

   
• OE Style Catalytic Converter Assembly

  Part Number: 57-290

  OE Style catalytic converter assembly

  $540.29

   
• 2-Piece Y pipe for the 4.8L and 6.0L Workhorse Chassis

  Part Number: 57-280

  2-Piece 'Y' pipe for the 4.8L and 6.0L Workhorse Chassis. Your original 'Y' pipe is connected at the base by a 'Football Flange'. By ... more

  $412.80

   
• Heavy Duty Aluminized Muffler

  Part Number: 57-427

  Muffler, 8-1/2"dia. x 29-1/2"L. Has 3-1/2" pipe ends. All welded seams, long lasting heavy duty aluminized steel. Will not split at s... more

  $75.92

   
• Tail Pipe, Aluminized

  Part Number: 57-255

  Tail pipe, aluminized (cut in two for shipping) that fits B5.9L Cummins Diesel engine & 4.3L Mercedes. Tail pipe exits on RH side.

  $88.36

   
• Muffler Hanger, 8.5" ring

  Part Number: 57-231

  Muffler hanger with 8-1/2" ring includes mounting bolts. Fits 57-427 muffler.

  $47.32

   
• Tail Pipe Kit

  Part Number: 57-276

  Tail pipe kit. Includes 57-255, 57-223, 57-216 and 4 of 57-352.

  $149.03

   
• Aluminized Tail Pipe

  Part Number: 57-234

  Aluminized tail pipe, 3" dia. Formed in two pieces for shipping purposes. 1991-on

  $115.97

   
• Left Exhaust Pipe for 6.0L Gasoline Engines

  Part Number: 57-9162

  Left Exhaust Pipe for 6.0L Gasoline Engines - fits Freightliner MT45 & MT55 - 3"dia. x 48".

  $210.51

   
• Right Exhaust Pipe for 6.0L Gasoline Engines

  Part Number: 57-9163

  Right Exhaust Pipe for 6.0L Gasoline Engines - fits Freightliner MT45 & MT55 - 3"dia. x 24"

  $159.61

   
• Turbo Pipe with 5.9 Liter, Aluminized

  Part Number: 57-256

  Turbo pipe, aluminized, that fits B5.9L Cummins diesel engines on Freightliner 2004 and newer.

  $68.00

   
• Turbo Pipe, Aluminized

  Part Number: 57-254

  Turbo pipe, aluminized, that fits B5.9L Cummins diesel engines on Freightliner 2003 and older.

  $53.90

   
• Muffler, Two 2.5" Inlets; One 3" Outlet

  Part Number: 57-9168

  Aluminized Muffler. Fits Freightliner MT45/MT55 6.0L Gas Engine.

  $237.30

   
• Hanger for Double Pipe

  Part Number: 57-455

  Hanger for double pipe, '96-On GM/Workhorse

  $52.80

   
• Y-Pipe

  Part Number: 57-240

  Y-pipe for 6.5L diesel

  $409.80

   
• Catalytic Converter

  Part Number: 57-218

  Replacement Catalytic Converter for gas engines. This is a new converter, not rebuilt, and has 3" pipe connections for the inlet and ... more

  $213.68

   
• Right Exhaust Manifold Kit

  Part Number: 57-363

  Right Exhaust Manifold kit that fits Chevrolet 8 cylinder, 350 CID '87-ON, includes: 3 studs, 3 nuts, 3 springs. Come with Preheat Sh... more

  $100.62

   
• Catalytic Converter

  Part Number: 57-215

  Catalytic Converter used for single or dual exhaust for 87 and newer Chev P-30 with 350 c.i. engine under 9500 lbs. GVRW. W... more

  $159.59

   
• Aluminized Muffler

  Part Number: 57-220

  Muffler with 3" fittings. Fits 87-on Chev P-30 with 350 c.i. engine

  $64.22

   
• Insulator Hanger

  Part Number: 57-433

  Rubber insulator hanger for exhaust

  $13.95