Doug Thorley Diesel Cat Back Exhaust System
Home » - Diesel Exhaust Systems, - Doug Thorley Headers, Exhaust, Mufflers & Tips » Doug Thorley Diesel Cat Back Exhaust System
List Price: $375.00-$670.00
Our Price: $315.95-$562.95
Shipping: Free Shipping
Financing:
No Payments for 90 Days on purchases over $250!
Customer Rating:
(11 Reviews)

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Doug Thorley Headers Doug Thorley Diesel Cat Back Exhaust System, Doug Thorley Headers - Exhaust, Mufflers & Tips - Diesel Exhaust Systems

Product Info

Features

  • The Doug Thorley Diesel Exhaust System juices-up Powerstroke, Duramax and Cummins diesel trucks with free-flowing power
  • Utilizes custom CNC mandrel-bent 16-gauge aluminized steel tubing to eliminate restrictions and backpressure
  • Doug Thorley Diesel Exhausts boast a massive 4″ pipe diameter to accommodate high-displacement diesel engines
  • Bolts directly to stock mounting positions at the turbo or catalytic converter without any modifications required
  • Doug Thorley Headers’ Diesel Exhaust Systems employ factory-style hangers for straightforward mounting
  • Exit pipes are capped-off by a whopping 5″ chrome exhaust tip
  • Includes a high-performance Thorley muffler
  • Your Doug Thorley Diesel Exhaust carries a Lifetime Warranty for the original owner

Description

Your diesel rig came with more than enough horsepower and torque for the average driver. Doug Thorley Exhausts have never been much for average, though. Their decades-long mission has been to make stock exhausts look inferior.

This is where Doug Thorley Headers’ Diesel Exhaust comes in for your truck. Using 16-gauge aluminized steel tubing in a girthy 4” diameter, custom CNC mandrel bending and a free-flowing muffler, a Thorley Diesel Exhaust adds instant punch at the pedal. It provides loads of low-end pulling torque, too.

Doug Thorley Diesel Exhausts keep installation simple. All diesel exhausts mount to the original positions, and include factory-style hangers for straightforward mounting. Plus, each Doug Thorley Diesel Exhaust stays 50-state smog legal.

To top it all off, your Doug Thorley Diesel Exhaust is capped by a burly 5” diameter chrome exhaust tip and carries a Lifetime Warranty for the original owner—hardly an average deal on diesel exhaust.

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Manufacturer Info

Doug Thorley Headers is an industry icon synonymous with power, performance, speed and sound. It is a demanding position to maintain but we are committed to our mission of upholding a standard of excellence that places us second to none in the automotive exhaust market.

Based in the heyday of muscle cars and drag racing, a solid foundation began for the development of products used in everyday street driven vehicles. Over time, that massive amount of research, expertise and proven results brought some of the biggest names in the industry to our door. Companies such as Honda, Roush, TRD, Kawasaki, Suzuki and a host of other well-known trade names rely on us to provide the “Show & Go” our name has come to imply It is a fact we’re very proud of.

In the coming years, Doug Thorley Headers and Exhaust Shows no signs of slowing down. Our application list continues to rapidly expand thanks to our talented team of engineers, expert developers and skilled machinists. Having added a state-of-the-art facility in 2002, our combined space now totals over 143,000 square feet. This has allowed for implementation of the latest methods in modernized manufacturing techniques. With production streamlined, we are able to focus on what matters most: providing quality products, expeditious delivery and attentive service to you.

The above information has been provided by the Manufacturer and AutoAnything cannot guarantee the accuracy thereof or endorse the opinions expressed.

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Reviews

99 dodge cummins
Posted on 10/22/2007 by Rick L G. (Harrison,AR)
“I ordered the Doug Thorley turbo back 4 in. exhaust, but it was back orderd twice from the factory which was 4 week delay. I recieved instead was the Jardine exhaust . I,m happy with it . Seems to be a Quality product. Installation was real smooth and all the OEM hangers fit good. Has a real nice chrome tip and has a real nice throaty sound. It took me less then 3 hr. to cut off old and install the new exhaust in my driveway by myself. I beleive it was a good purchase and worth waiting for.”
Easy Installation
Posted on 04/18/2007 by Jeremy H. (Mcveytown,PA)
“The kit was very easy to install. I am happy with the sound!”
OK
Posted on 04/13/2007 by James M. (Carbondale,KS)
“I ordered the Doug Thorley exhast, but the jardine exhaust was what I got. the picture was bolt up but this system was cut and weld. It did go on and seems to fit.”
Excellent
Posted on 04/06/2007 by Randall H. (Montague,MI)
“System was VERY easy to install. I suggest using a sawsall to remove the stock system in three pieces. I removed the stock, installed and welded the new, in 1 1/2 hours! Excellent system, sounds AWESOME! Really brought the 7.3 to life!”
Wasnt so simple. But worth it.
Posted on 01/31/2007 by Alex M. (Carthage,MO)
“Well the shipping came in on time as promised. Everything was there, no missing parts. I have basic knowledge of mechanics but the instructions were not very clear at all. I have a 2002 Excursion Limited Diesel, I would have to say that the biggest problems with this were getting the rubber hangers of, and the down pipe would not come out at all. It will have to be hacksawed or you will have to remove the peice holding the transmission up to provide enough clearance of the downpipe removal. Also you will need to have a high jack or the cat back will not have enough clearance to be removed, but it can be hacksawed. All in all, if you can manage the removal of the old muffler, putting the new one will be much much easier. I hope this helps.”
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