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Doug's Headers 1958-64 Chevy 348/409 V8 1 3/4" TRI-Y Header D309Y

Doug's Headers 1958-64 Chevy 348/409 V8 1 3/4" TRI-Y Header D309Y
Doug's Headers 1958-64 Chevy 348/409 V8 1 3/4" TRI-Y Header D309YDoug's Headers 1958-64 Chevy 348/409 V8 1 3/4" TRI-Y Header D309Y
from $1,929.10 st

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Model: 5124704
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Doug's is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.
Features:
  • 3/8" thick machined flanges to prevent warping
  • CNC mandrel bent tubes ensure accurate fit and better flow
  • Heavy 16-guage tubing for longer life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating
About Doug's Headers

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.

Downloads:

Download Name File Size
D309Y.pdf339.23KB
D309Y-B.pdf339.23KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
Chevrolet Bel Air 1958 5.7L / 348 / V8 Tri-Y
Chevrolet Bel Air 1959 5.7L / 348 / V8 Tri-Y
Chevrolet Bel Air 1960 5.7L / 348 / V8 Tri-Y
Chevrolet Bel Air 1961 6.7L / 409 / V8
5.7L / 348 / V8
Tri-Y
Chevrolet Bel Air 1962 6.7L / 409 / V8 Tri-Y
Chevrolet Bel Air 1963 6.7L / 409 / V8 Tri-Y
Chevrolet Bel Air 1964 6.7L / 409 / V8 Tri-Y
Chevrolet Biscayne 1958 5.7L / 348 / V8 Tri-Y
Chevrolet Biscayne 1959 5.7L / 348 / V8 Tri-Y
Chevrolet Biscayne 1960 5.7L / 348 / V8 Tri-Y
Chevrolet Biscayne 1961 6.7L / 409 / V8
5.7L / 348 / V8
Tri-Y
Chevrolet Biscayne 1962 6.7L / 409 / V8 Tri-Y
Chevrolet Biscayne 1963 6.7L / 409 / V8 Tri-Y
Chevrolet Biscayne 1964 6.7L / 409 / V8 Tri-Y
Chevrolet El Camino 1959 5.7L / 348 / V8 Tri-Y
Chevrolet El Camino 1960 5.7L / 348 / V8 Tri-Y
Chevrolet Impala 1958 5.7L / 348 / V8 Tri-Y
Chevrolet Impala 1959 5.7L / 348 / V8 Tri-Y
Chevrolet Impala 1960 5.7L / 348 / V8 Tri-Y
Chevrolet Impala 1961 6.7L / 409 / V8
5.7L / 348 / V8
Tri-Y
Chevrolet Impala 1962 6.7L / 409 / V8 Tri-Y
Chevrolet Impala 1963 6.7L / 409 / V8 Tri-Y
Chevrolet Impala 1964 6.7L / 409 / V8 Tri-Y

Specifications:

Collector Attachment 3-Bolt Flange
Collector Diameter 2.5 IN
Collector Port Diameter 2.5 IN
Cylinder Head Port Shape SAP
Design Tri-Y
Flange Thickness 0.375 IN
Gasket Or Seal Included Yes
Gaskets Included Yes
Grade Type Performance
Header Style Tri-Y
Mounting Hardware Included Yes
Oxygen Sensor Port No
Part Type Exhaust Header
Port Shape SAP
Primary Tube Outside Diameter 1.75 IN
Proposition 65 www.P65Warnings.ca.gov
Tube Wall Thickness 16 GU
Warranty Time 24 Months

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Doug's Headers 1958-64 Chevy 348/409 V8 1 3/4" TRI-Y Header D309Y: