2002-07 Chevy/GMC Silverado/Sierra/Tahoe/Yukon/Suburban 1 5/8" Shorty Header with Hi-Temp Black Coating

Emissions code 1 Emissions CodeC.A.R.B. EO Number: D-57-48
Part Number: D3373-B In Stock
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Regular price $528.73
Sale price $528.73 Regular price Save %
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Free Delivery

Free shipping on orders over $100 in contiguous 48 states.

Easy Returns

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Reliable Quality

Products built to last for enduring performance.

Features & Benefits

Highlights

Doug's Shorty Headers deliver real performance in a compact package. Designed as a direct replacement for restrictive stock manifolds, these headers improve exhaust flow and free up horsepower - all with a straightforward bolt-on installation that works where underhood clearance is at a premium.

  • 3/8” thick machined flanges to prevent warping
  • CNC mandrel bent tubes for an accurate fit and improved flow
  • Durable 16 gauge tubing
  • 1 5/8" Primary Tubing Diameter
  • 2.5" Collector Port Diameter
  • Round Port Shape
  • Hi-Temp Black Coating
Why pick Doug's Hi-Temp Black Coating Finish?

Built for durability without the added cost of specialty coatings, our high-temp black finish delivers clean looks and reliable protection where it counts. Designed to withstand the heat of everyday performance, this coating helps guard against rust and corrosion while maintaining a smooth, uniform appearance. The sleek black finish offers a subtle, aggressive style that holds up under real-world conditions—making it a practical, no-nonsense choice for drivers who want solid protection and a classic look without the need for thermal barrier coatings.

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Specifications

Finish Hi-Temp Black Coating
Material Steel
Design Shorty
Primary Tubing Diameter 1.625 Inches
Collector Port Diameter 2.5 Inches
Port Shape Round
Tube Wall Thickness 16 Gauge
Flange Thickness 0.375 Inches
Collector Attachment 3-Bolt Flange
Oxygen Sensor Port No
Gasket Or Seal Included Yes
Mounting Hardware Included Yes
Grade Type Performance
Color Black
Sheen Level Matte

Installation instructions

Instruction Manual
Installation Instructions
Download

Shipping & Delivery

Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.

 Shipping Class Order Value Shipping Cost
UPS Ground $0 - 49.99 $6.99 flat rate
UPS Ground $50 - 108.99 $7.49 flat rate
UPS Ground $109+ Free


  • At this time, PerTronix does not offer expedited shipping options from our website.

  • All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.

  • PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.

  • Once an item has tracking info, it cannot be cancelled. If you decide you don’t want the items after shipment, please take receipt of the item and process it via our return policy. Thank you for understanding!

 

Shipping Dock Hours of Operations

7:00am to 4:00pm CST Monday-Friday

Receiving Dock Numbers: 7 and 8

Shipping Dock Numbers: 13, 14, and 15

Returns, Replacements & Warranty

Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.

Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.

For complete details, visit our Returns page.

Warranty

Fitment

Vehicles

Year / Make / Model Engine Type Engine Size(s) Notes
2003-2006 Cadillac Escalade ESV V8 Liters: 6.0
Cubic Inches: 364
2007-2013 Cadillac Escalade ESV V8 Liters: 6.2
Cubic Inches: 376
2002-2006 Cadillac Escalade EXT V8 Liters: 6.0
Cubic Inches: 364
2007-2013 Cadillac Escalade EXT V8 Liters: 6.2
Cubic Inches: 376
2002-2006 Cadillac Escalade V8 Liters: 6.0
Cubic Inches: 364
2009-2013 Cadillac Escalade V8 Liters: 6.0
Cubic Inches: 364
2002-2005 Cadillac Escalade V8 Liters: 5.3
Cubic Inches: 325
2007-2013 Cadillac Escalade V8 Liters: 6.2
Cubic Inches: 376
2007 Chevrolet Silverado 1500 Classic V8 Liters: 4.8, 5.3, 6.0
Cubic Inches: 294, 325, 364
2007 Chevrolet Silverado 2500 HD Classic V8 Liters: 6.0
Cubic Inches: 364
2007 Chevrolet Silverado 3500 Classic V8 Liters: 6.0
Cubic Inches: 364
2007 Chevrolet Silverado 1500 HD Classic V8 Liters: 6.0
Cubic Inches: 364
2007-2013 Chevrolet Avalanche V8 Liters: 5.3
Cubic Inches: 325
2007-2009 Chevrolet Avalanche V8 Liters: 6.0
Cubic Inches: 364
2002-2006 Chevrolet Avalanche 1500 V8 Liters: 5.3
Cubic Inches: 325
2002-2013 Chevrolet Silverado 1500 V8 Liters: 4.8, 5.3
Cubic Inches: 294, 325
2003-2013 Chevrolet Silverado 1500 V8 Liters: 6.0
Cubic Inches: 364
2009-2013 Chevrolet Silverado 1500 V8 Liters: 6.2
Cubic Inches: 376
2002-2003 Chevrolet Silverado 1500 HD V8 Liters: 6.0
Cubic Inches: 364
2005-2006 Chevrolet Silverado 1500 HD V8 Liters: 6.0
Cubic Inches: 364
2002-2004 Chevrolet Silverado 2500 V8 Liters: 6.0
Cubic Inches: 364
2002-2013 Chevrolet Silverado 2500 HD V8 Liters: 6.0
Cubic Inches: 364
2002-2006 Chevrolet Silverado 3500 V8 Liters: 6.0
Cubic Inches: 364
2002-2013 Chevrolet Suburban 1500 V8 Liters: 5.3
Cubic Inches: 325
2006-2009 Chevrolet Suburban 1500 V8 Liters: 6.0
Cubic Inches: 364
2002-2013 Chevrolet Suburban 2500 V8 Liters: 6.0
Cubic Inches: 364
2002-2013 Chevrolet Tahoe V8 Liters: 5.3
Cubic Inches: 325
2002-2009 Chevrolet Tahoe V8 Liters: 4.8
Cubic Inches: 294
2008-2013 Chevrolet Tahoe V8 Liters: 6.0
Cubic Inches: 364
2008-2009 Chevrolet Tahoe V8 Liters: 6.2
Cubic Inches: 376
2007-2013 Chevrolet Silverado 3500 HD V8 Liters: 6.0
Cubic Inches: 364
2007 GMC Sierra 1500 Classic V8 Liters: 4.8, 5.3, 6.0
Cubic Inches: 294, 325, 364
2007 GMC Sierra 2500 HD Classic V8 Liters: 6.0
Cubic Inches: 364
2007 GMC Sierra 3500 Classic V8 Liters: 6.0
Cubic Inches: 364
2007 GMC Sierra 1500 HD Classic V8 Liters: 6.0
Cubic Inches: 364
2002-2013 GMC Sierra 1500 V8 Liters: 4.8, 5.3, 6.0
Cubic Inches: 294, 325, 364
2007-2013 GMC Sierra 1500 V8 Liters: 6.2
Cubic Inches: 376
2002-2003 GMC Sierra 1500 HD V8 Liters: 6.0
Cubic Inches: 364
2005-2006 GMC Sierra 1500 HD V8 Liters: 6.0
Cubic Inches: 364
2002-2004 GMC Sierra 2500 V8 Liters: 6.0
Cubic Inches: 364
2002-2013 GMC Sierra 2500 HD V8 Liters: 6.0
Cubic Inches: 364
2002-2006 GMC Sierra 3500 V8 Liters: 6.0
Cubic Inches: 364
2002-2013 GMC Yukon V8 Liters: 5.3
Cubic Inches: 325
2002-2009 GMC Yukon V8 Liters: 4.8
Cubic Inches: 294
2002-2006 GMC Yukon V8 Liters: 6.0
Cubic Inches: 364
2008-2013 GMC Yukon V8 Liters: 6.0
Cubic Inches: 364
2007-2013 GMC Yukon V8 Liters: 6.2
Cubic Inches: 376
2002-2013 GMC Yukon XL 1500 V8 Liters: 5.3
Cubic Inches: 325
2002-2009 GMC Yukon XL 1500 V8 Liters: 6.0
Cubic Inches: 364
2007-2013 GMC Yukon XL 1500 V8 Liters: 6.2
Cubic Inches: 376
2002-2013 GMC Yukon XL 2500 V8 Liters: 6.0
Cubic Inches: 364
2007-2013 GMC Sierra 3500 HD V8 Liters: 6.0
Cubic Inches: 364

Always Read All Product Page Details For More Important Fitment Information

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