
06-07 GM 6.6L Duramax 4 Inch Diamond Eye Aluminized Cat Back Dual
$540.03
- Part Number: K4124A
- Est. Ship Time: Contact To Confirm Availability

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Starting From $405.23
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive Sound
*Better Throttle Response
*Easy Bolt-On Kits
*Utilizes OEM Hangers
*1-Year Limited Warranty on Aluminized kits
*6-Year Limited Warranty on Stainless Steel Kits
*Made in the USA
K4124A - FOR 2006 & EARLY 2007 - CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 (ALL CAB AND BED LENGTHS) 4" ALUMINIZED - PERFORMANCE DIESEL EXHAUST KIT - CATALYTIC CONVERTER BACK DUAL

Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$540.03
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$662.58
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$538.47
321045 - FOR 2001, 2002, 2003, 2004, 2005, 2006 & EARLY 2007 - CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 - 4" ALUMINIZED - ..
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Backordered with No ETA (Updated on 6/3/2025)
361045 - FOR 2001, 2002, 2003, 2004, 2005, 2006 & EARLY 2007 - CHEVY/GMC 6.6L D..
$96.09
4001 - FOR 2001, 2002, 2003, 2004, 2005, 2006 & EARLY 2007 - CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 - PERFORMANCE DIESEL EXHAUST - HIG..
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Diamond Eye Aluminized 5" Tailpipe. This is the piece that exits from the vehicle. If you need the 1st tailpipe piece, see below.
Fits 2001 - ..
$106.60
Diamond Eye Aluminized 5" Tailpipe. This is the piece that connects to the last tailpipe piece. If you need the 2nd tailpipe piece (exiting piece..
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Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$405.23
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$347.57
Backordered with No ETA (Updated on 6/3/2025)
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Dir..
$478.75
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$419.19
Allow a 1 week lead time!
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increas..
$478.75
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
..
$419.19
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$405.23
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$347.57
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$478.75
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$478.75
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$419.19
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$558.76
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$464.52
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$360.99
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
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Banks' new Monster Sport Exhaust is one cool cat-back system! And its low price? That's way cool. The system slashes backpressure, increases exhaust f..
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Fits, GM Duramax Diesel 2001-2007 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually.
4" Mandrel bent tubing for maximum flow
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Fits, GM Duramax Diesel 2001-2007 6.6L 2500/3500. For, Extended Cab, Long/Short box, Dually.
4" Mandrel bent tubing for maximum flow
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$609.40
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
..
$419.19
2006-2007 Chevy/GMC 2500/3500 Duramax, Classic, EC/CCCat Back, Single Side, T409S6012409 2006-2007 Chevy/GMC 2500/3500 Classic Duramax Cat Back, Ext..
$719.99
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$405.23
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$347.57
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$478.75
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$478.75
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$419.19
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$558.76
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$464.52
Banks' 4" heavy-duty stainless Monster exhaust system cuts backpressure up to 98% and flows up to 176% better than stock. The streamlined intermediate..
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Fits, GM Duramax Diesel 2001-2007 6.6L 2500/3500. For, Extended/Club Cab, Long/Short box. Please choose Dual Axel application above.
4" Mandrel bent ..
$639.87
SoCal Diesel is a company known for providing high-performance diesel parts and accessories, particularly for trucks and heavy-duty vehicles. They foc..
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