Doug's Headers

Doug's Steel Header - D300Y

Part #
D300Y
Line:
DGS

Product Information

  • Warranty:  30 Month Limited Warranty
  • Unit of Measure:  Per Set
  • UPC:  # 694342506865
  • Finish: Ceramic Coated, Semi-Gloss
  • Material: Steel
  • Port Shape: Oval
  • Style: Full-Length
  • Hardware Included: Yes
  • Attachment Method: Bolt-On, Flange
  • Tube Size (in): 1-5/8 Inch
  • Collector Size (in): 2-1/2 Inch
  • Gasket Or Seal Included: Yes
  • Head Flange Thickness (in): 3/8 Inch
  • Oxygen Sensor Port Included: No

Applications for this Product

  • Select a vehicle to see vehicle applications.

Detailed Description

Header; Tri Y; 1963 To 1991 GM Truck 265-400 SBC Non Cat, no EGR or A.I.R. 2 And 4 WD 1-5/8 To 2 Inch Primary; 2-1/2 Inch Collector; Silver; Ceramic Coated D300Y;

Doug's 2/4 WD TRUCK HEADERS Tri-Y Metallic Ceramic Coated Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's 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. Doug's headers are carefully developed on the vehicles they are intended to fit and are rechecked numerous times during the design and manufacturing process.

  • 3/8 inch thick machined flanges - no warping
  • CNC mandrel bent tubes - accurate fit and better flow
  • Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
  • Heavy 16 gauge tubing - longer life
  • Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 Degrees Fahrenheit

Brand Information

Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality Muscle Car performance Headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.
Show All Details Show Less Details