Size of stock exhaust on 2003 3500

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Nov 21, 2005 | 07:30 PM

herb

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From: Battle Creek Michigan

Size of stock exhaust on 2003 3500

Just picked up a 2003 dually 3500. am looking at a U.S. Gear D-Celerator RV Diesel Exhaust Brake , made for 3 1/2" exhaust anyone know off hand what is on this truck?

Nov 21, 2005 | 08:27 PM

SmokinDodge12V

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From: Salem,In.

Im pretty sure the size is 3.5in from downpipe to the mufler and then from rear of muf to tip is 4in

Nov 21, 2005 | 08:38 PM

wagonhauler

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From: Abilene, Texas

my 2500 was 3.5 in to the muff.

Nov 22, 2005 | 11:45 AM

Buffalo

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From: Glendale(Phoenix),AZ.

It's 3-1/2" all the way through the muffler & into the tail pipe. The tailpipe then expands to 4" to the tip.

Sounds like that exhaust brake will work, for you.

Good Luck.

Joe F.(Buffalo)

Nov 22, 2005 | 04:16 PM

truckjunkie

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From: St. Louis Metro Area, MO

Just a question - is the 4.5 and up a full 4" for the entire distance of the exhaust? I'm looking at getting a turn-down tip for mine - I thought I should be looking at a 4" one, correct?

Nov 23, 2005 | 08:46 AM

nickleinonen

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From: markham, ontario, canada

Quote:

Originally Posted by truckjunkie

Just a question - is the 4.5 and up a full 4" for the entire distance of the exhaust? I'm looking at getting a turn-down tip for mine - I thought I should be looking at a 4" one, correct?

03-04 = 3.5" from turbo to muffler outlet, then expands to 4" for the tailpipe section
04.5-06 4" from the turbo to tailpipe