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GMC Sierra 3500 HD Muffler

We have 4 Items In-stock. Select a year to continue.
$188.99 List Price $244.58 Save $55.59 Availability: In Stock
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FLOWMASTER – PRO SERIES MUFFLERS

Flowmaster’s versatile Pro Series mufflers turn your street or track vehicle into a performance powerhouse that sounds great with a nice, deep tone that will still meet strict dB race regulations. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Full-size is great for diesel or gas trucks or race vehicles
  • ‘Shorty’ styles are perfect for performance or muscle cars
  • Round case style means optimal performance and a nice, deep tone
  • Cool Shell technology works well for vehicles with compact or heat-sensitive space issues
  • Versatile applications – from street to strip
  • Backed by a lifetime warranty
  • Fully MIG-welded for maximum strength
  • Comes in stainless steel
  • Fabricated utilizing patented Laminar Flow process for custom tones
  • Quick and easy installation
  • Dyno-tested
  • SKU#: F1314020100
  • Brand: Flowmaster
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
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Fits the following GMC Sierra 3500 HD Years:
  • 2007 | 8 Cyl 6.6L | SLE, SLT, WT
$95.88 List Price $113.14 Save $17.26 Availability: In Stock
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KOOL VUE HIGH PERFORMANCE MUFFLER, STAINLESS STEEL, POLISHED

Looking for a high performance muffler? KOOL VUE mufflers offer a selection that improves your vehicle's performance and at the same time dramatically decreases its noise. It also produces an aggressive but cool tone from the inside %X96 something to be proud of when you are in the streets.

Features and Specifications:
  • Oval casing
  • 2.5 in. inlet diameter; 3.5 in. outlet diameter
  • Single center inlet and dual center outlet configuration
  • 14 in. length x 9 in. width x 5 in. height; 24 in. overall length

Benefits:
  • Improves vehicle's performance
  • Dramatically decreases the noise
  • Stainless steel material for extended durability and longer life


  • SKU#: KV150105
  • Brand: Kool Vue
  • Quantity Sold: Sold Individually
  • Sound Level: Mild
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Weld-On
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Fits the following GMC Sierra 3500 HD Years:
  • 2007-2008 | 8 Cyl 6.6L | SLE, SLT, WT
Rating: (see review/s)

"This comp. was there when I lost My order and I had only my ebay receit. Thay founded my order and sent out right any Thanks" posted by: zzsplash on March 11, 2014

"I opted to have this muffler professionally installed (welded on) because it didnt have a hanger attached to it. The frost heaves and dirt roads that we have to deal with in northern New Hampshire would guarantee it would fall off with just clamps holding it in place. The finish and quality is really nice and it looks good on the car the duals make it look unique as well. Its my 19 year old sons car and he says its too loud and well be having a resonator installed when hes home from college during Christmas break. The bottom line is this take into consideration the cost of a resonator and professional installation before you buy it it might be cheaper to buy an entire exhaust with a resonator included. Fortunately this car had a brand new cataytic converter and mid pipe being installed at the same time paid for by the dealer so the cost of the muffler install was minimal." posted by: NEDiver on October 9, 2013 view all 5 reviews

$41.83 List Price $61.18 Save $19.35 Availability: In Stock
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THRUSH – TURBO MUFFLERS

Thrush makes a wide selection of mufflers with a choice of sizes and inlet/outlet positions to make sure you get the right fitting muffler for your ride. Thrush Turbo Mufflers have the classic Thrush sound and have a tested reverse flow design. Thrush Mufflers was founded almost 50 years ago during a time when hot rods and muscle cars ruled the streets of America. Fast forward to today and Thrush Mufflers are still the preferred muffler of muscle car and hot rod owners across the land. Be assured that when installing a Thrush Muffler you will get an aggressive and powerful sounding exhaust tone, hence Thrush’s motto; “Vintage Sound…Today’s Power.”

  • Available in 2.25 inch, 2.5 inch and 3 inch inlets and outlets
  • Available muffler shell sizes from 11 inches to 20 inches
  • Made of 100 % aluminized steel
  • Completely reversible for Flexibility during installation
  • Classic Thrush sound
  • Does not void your vehicle’s factory warranty
  • Reverse flow design
  • SKU#: D2217715
  • Brand: Thrush
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
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Fits the following GMC Sierra 3500 HD Years:
  • 2007-2008 | 8 Cyl 6.6L | SLE, SLT, WT
Rating: (see review/s)

"Good buy, would be better with adapters for ends to match car." posted by: on September 26, 2014

"PRODUCT WAS JUST AS ORDERED. WAS INSTALLED WITH EASE." posted by: G LAB on March 21, 2013 view all 8 reviews

$28.96 List Price $61.18 Save $32.22 Availability: In Stock
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DYNOMAX – THRUSH TURBO MUFFLERS

Dynomax offers a selection of mufflers with a choice of sizes and inlet/outlet positions to make sure you get the right fitting muffler for your ride. Dynomax Thrush Turbo Mufflers have the classic Thrush sound and have a tested reverse flow design. Dynomax is a world leader in the performance exhaust space, manufacturing products held to the highest engineering standards and backed by extensive research and development.

  • Available in various inlet and outlet sizes and muffler shell lengths
  • Made of 100 % aluminized steel
  • Completely reversible for flexibility during installation
  • Classic Thrush sound
  • Does not void your vehicle’s factory warranty
  • Reverse flow design
  • SKU#: D2217702
  • Brand: Dynomax
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
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Fits the following GMC Sierra 3500 HD Years:
  • 2007-2008 | 8 Cyl 6.6L | SLE, SLT, WT
Rating: (see review/s)

"Everything as described, shipped timely, recieved in good condition, works as expected." posted by: endoftheriver on July 30, 2009