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Street Race Truck More... The Toolbox
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$1,073.31
$626.99
Doug's Headers D303Y-SP Tri-Y Header, 1-3/4 In, 68-87 Chevy Truck, CC
Doug's Headers D303Y-SP Tri-Y Header, 1-3/4 In, 68-87 Chevy Truck, CC

Doug's Headers D303Y-SP Tri-Y Header, 1-3/4 In, 68-87 Chevy Truck, CC

Chevy Big Block V8, Tri-Y Header Tube Type, Metallic Ceramic Coating, Standard Flange Style

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Doug's Headers D303Y-SP Tri-Y Header, 1-3/4 In, 68-87 Chevy Truck, CC
Doug's Headers D303Y-SP Tri-Y Header, 1-3/4 In, 68-87 Chevy Truck, CC
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We estimate this item will ship on or before November 15th.
Part # 447D303YSP
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$626.99
$1,073.31
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 2 business days for Dougs Headers to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

Header Tube Type:
Tri-Y
Finish:
Metallic Ceramic Coating
Flange Style:
Standard
Primary Tube Diameter:
1-3/4"
Material Type:
Steel
Color:
Silver
MFG. Part #:
D303Y-SP
Collector Diameter:
2-1/2 Inch
Hardware Included:
Yes
Gasket(s) Included:
Yes
Sold in Quantity:
Pair
GTIN Code:
694342507022

Info

Coated Header for Chevy/GMC 2WD & 4WD Trucks & SUV 1/2, 3/4, 1 Ton/ 1500, 2500, 3500 Trucks with Single Smog Pump

  • Blazer/Jimmy, Suburban, Tahoe/Yukon (68-87) 396-502 Engine
  • 1 Ton/3500 Crew, Standard Cab Dually (73-91) 396-502 Engine
  • Class A (Chevy Chassis) (75-91) 396-502 Engine
This part comes standard with Metallic Ceramic Thermal Barrier Coating (MCTBC). MCTBC protects and extends the life of headers by creating a thermal barrier that significantly lowers underhood temperatures and protects the substrate metal from thermal fatigue. It also provide corrosion resistance to protect it for years to come.

Please see our online catalog for specific application information.

Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

Installation Instructions (PDF)

Notes

  • Doug's Headers D303Y-SP 1 3/4" Tri-Y Header Chevrolet Truck with Single Smog Pump Fitting Big Block Chevrolet 68-87 Metallic Ceramic Coating
Some parts are not legal for use in California or other states with similar laws/regulations

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  • Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
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  • Pat shows that exhaust can make a difference on even your daily driver. Check out this video of Pat with the Hooker Muffler installed on his '03 Suburban.
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