01-07.5 GM 6.6L Duramax 4 Inch Aluminized Intermediate Pipe
$121.49
- Part Number: 321046
- Est. Ship Time: Contact to Confirm Availability
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This is the pipe that is between the downpipe and muffler.
4" Aluminized
Diamond Eye part number: 321046
Aluminized Steel 4 Inch Front Pipe with Flange for 2001-2004 Chevy/GM 6.6L Duramax Diesel
THIS PRODUCT CANNOT SHIP TO CALIFORNIA
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321045 - FOR 2001, 2002, 2003, 2004, 2005, 2006 & EARLY 2007 - CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 - 4" ALUMINIZED - ..
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Replacement section for first section of tailpipe only on 01-07 6.6L Duramax.
The Second section is part # 321052
Image for Representation only..
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4" ALUMINIZED - PERFORMANCE DIESEL EXHAUST - MUFFLER REPLACEMENT PIPE - HIGH FLOW - STRAIGHT THROUGH - 4" I.D. X 4" I.D.
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FOR 2001, 2002, 2003, 2004, 2005, 2006, 2007 - CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 (ALL CAB AND BED LENGTHS) - 4" ALUMINI..
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2003-2007 Ford 6.0L Powerstroke Diesel Exhaust Manifold Bolt
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The Grand Rock V-Band Clamp VB-384G is a replacement for the factory clamp your 2001-2015 GM 6.6L Duramax. This clamp joins the bottom of your do..
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Backordered with No ETA (Updated on 10/13/25)
361045 - FOR 2001, 2002, 2003, 2004, 2005, 2006 & EARLY 2007 - CHEVY/GMC 6.6L D..
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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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2 13/16" - Length
7/8" - Height
5/16" - Hanger Holes
1 1/2" - Spacing between holes
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The simple, effective way to connect exhaust system components. Replaces U-bolts and clamps. Patented design makes for fast, easy and accurate install..
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321045 - FOR 2001, 2002, 2003, 2004, 2005, 2006 & EARLY 2007 - CHEVY/GMC 6.6L DURAMAX DIESEL 2500/3500 - 4" ALUMINIZED - ..
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Airflow Rating
Cotton, Cleanable: Flows 47.8% better than the Stock Intake
Dry: Flows 46.7% Better than the Stock Intake
Efficiency Rating ..
Starting From $349.00
Applications:
01-07 GM Silverado & Sierra 2500HD & 3500HD 6.6L Duramax
06-07 GM Express & Savana 6.6L Duramax
04-07 GM C4500 &..
$38.36
The AP Exhaust 9503 4" Zinc Plated Flat Band U-Bolt Clamp is for use on 4" exhaust systems and features a "flat band" instead of a..
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Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
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$506.52
**This Kit Does Not Include Muffler**
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*Increased Fuel Economy
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$437.34
Backordered with No ETA (Updated on 9/12/2025)
Features:
*Increased Fuel Economy
*Lower EGTs
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**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
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$562.66
Allow a 1 week lead time!
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increas..
$594.75
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
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$562.66
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$506.52
**This Kit Does Not Include Muffler**
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*Increased Fuel Economy
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*Mandrel Bent Tubing for Maximum Flow
*Di..
$437.34
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
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*Agressive So..
$640.09
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$594.75
**This Kit Does Not Include Muffler**
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*Increased Fuel Economy
*Lower EGTs
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$523.27
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
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$744.11
**This Kit Does Not Include Muffler**
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*Increased Fuel Economy
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*Mandrel Bent Tubing for Maximum Flow
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$621.58
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
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Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
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*Increased Horsepower and Torque
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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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**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
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$562.66
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..
$659.99
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$506.52
**This Kit Does Not Include Muffler**
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$437.34
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$640.09
Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$594.75
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Di..
$523.27
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
$744.11
**This Kit Does Not Include Muffler**
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
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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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Features:
*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
*Agressive So..
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**This Kit Does Not Include Muffler**
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
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*Increased Fuel Economy
*Lower EGTs
*Mandrel Bent Tubing for Maximum Flow
*Direct Fit
*Increased Horsepower and Torque
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