Just Arrived! Shop MBRP Exhaust

Just Arrived Rough Country!

Doug's Headers  |  SKU: D372Y-SS-BKLK

Tri-Y Headers for 69-72 GM Truck 265-400 SBC 2WD/4 WD 1-5/8in Primary D372Y-SS

Regular price $865.20 USD
Shipping calculated at checkout.

The "verify fitment tool" above is for Year, Make, and Model ONLY!

Please see description for full fitment notes!!!

Fitment

Warranty Information

Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.

Description

Overview:

69-72 GM Truck SBC Tri Y Stainless

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:

  • Natural stainless-steel finish offers superior resistance to rust and corrosion
  • 3/8" thick 304 stainless machine flanges to prevent warping
  • CNC 304 stainless mandrel bent tubes for an accurate fit and improved flow
  • Precision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower

Specs:

  • Brand: Doug's Headers
  • Collector Attachment: 3-Bolt Flange
  • Collector Diameter: 2.5 IN
  • Collector Port Diameter: 2.5 IN
  • Color: Silver
  • Cylinder Head Port Shape: Oval
  • Design: Tri-Y
  • EGT Port: No
  • Finish: 304 Stainless Steel
  • Flange Thickness: 0.375 IN
  • Gasket Or Seal Included: Yes
  • Gaskets Included: Yes
  • Grade Type: Performance
  • Header Material: 304 Stainless Steel
  • Header Style: Tri-Y
  • Material: 304 Stainless Steel
  • Mounting Hardware Included: Yes
  • Oxygen Sensor Port: No
  • Port Shape: Oval
  • Primary Tube Outside Diameter: 1.625 IN
  • Primary Tubing Diameter: 1.625 IN
  • Prop 65 (C, R or CR): CR
  • Prop 65 Yes/No: Yes
  • Sheen Level: Satin
  • Title: Doug's Tri Y Header 69-72 GM Truck 265-400 SBC 2WD & 4 WD 1 5/8-2" Primary 2 1/2" Collector 304 Stainless D372Y-SS
  • Tube Wall Thickness: 16 GU
  • Part Number: D372Y-SS

Applications:

  • 1967-1969 Chevrolet C10 Pickup 327 CID
  • 1967-1967 Chevrolet C10 Pickup 283 CID
  • 1968-1972 Chevrolet C10 Pickup 307 CID
  • 1969-1972 Chevrolet C10 Pickup 350 CID
  • 1967-1969 Chevrolet C20 Pickup 327 CID
  • 1967-1967 Chevrolet C20 Pickup 283 CID
  • 1968-1972 Chevrolet C20 Pickup 307 CID
  • 1969-1972 Chevrolet C20 Pickup 350 CID
  • 1967-1969 Chevrolet C30 Pickup 327 CID
  • 1967-1967 Chevrolet C30 Pickup 283 CID
  • 1968-1972 Chevrolet C30 Pickup 307 CID
  • 1969-1972 Chevrolet C30 Pickup 350 CID
  • 1967-1969 Chevrolet K10 Pickup 327 CID
  • 1967-1967 Chevrolet K10 Pickup 283 CID
  • 1968-1972 Chevrolet K10 Pickup 307 CID
  • 1969-1972 Chevrolet K10 Pickup 350 CID
  • 1967-1969 Chevrolet K20 Pickup 327 CID
  • 1967-1967 Chevrolet K20 Pickup 283 CID
  • 1968-1972 Chevrolet K20 Pickup 307 CID
  • 1969-1972 Chevrolet K20 Pickup 350 CID
  • 1968-1972 Chevrolet K30 Pickup 307 CID
  • 1968-1969 Chevrolet K30 Pickup 327 CID
  • 1969-1972 Chevrolet K30 Pickup 350 CID
  • 1969-1972 Chevrolet Blazer 307 CID
  • 1969-1972 Chevrolet Blazer 350 CID
  • 1967-1969 Chevrolet C10 Suburban 327 CID
  • 1967-1967 Chevrolet C10 Suburban 283 CID
  • 1968-1972 Chevrolet C10 Suburban 307 CID
  • 1969-1972 Chevrolet C10 Suburban 350 CID
  • 1967-1969 Chevrolet C20 Suburban 327 CID
  • 1967-1967 Chevrolet C20 Suburban 283 CID
  • 1968-1972 Chevrolet C20 Suburban 307 CID
  • 1969-1972 Chevrolet C20 Suburban 350 CID
  • 1967-1969 Chevrolet K10 Suburban 327 CID
  • 1967-1967 Chevrolet K10 Suburban 283 CID
  • 1968-1972 Chevrolet K10 Suburban 307 CID
  • 1969-1972 Chevrolet K10 Suburban 350 CID
  • 1967-1969 Chevrolet K20 Suburban 327 CID
  • 1967-1967 Chevrolet K20 Suburban 283 CID
  • 1968-1972 Chevrolet K20 Suburban 307 CID
  • 1969-1972 Chevrolet K20 Suburban 350 CID
  • 1967-1968 GMC C15/C1500 Pickup 327 CID
  • 1967-1967 GMC C15/C1500 Pickup 283 CID
  • 1968-1972 GMC C15/C1500 Pickup 307 CID
  • 1969-1972 GMC C15/C1500 Pickup 350 CID
  • 1967-1968 GMC C15/C1500 Suburban 327 CID
  • 1967-1967 GMC C15/C1500 Suburban 283 CID
  • 1968-1972 GMC C15/C1500 Suburban 307 CID
  • 1969-1972 GMC C15/C1500 Suburban 350 CID
  • 1967-1968 GMC C25/C2500 Pickup 327 CID
  • 1967-1967 GMC C25/C2500 Pickup 283 CID
  • 1968-1972 GMC C25/C2500 Pickup 307 CID
  • 1969-1972 GMC C25/C2500 Pickup 350 CID
  • 1967-1968 GMC C25/C2500 Suburban 327 CID
  • 1967-1967 GMC C25/C2500 Suburban 283 CID
  • 1968-1972 GMC C25/C2500 Suburban 307 CID
  • 1969-1972 GMC C25/C2500 Suburban 350 CID
  • 1967-1968 GMC C35/C3500 Pickup 327 CID
  • 1967-1967 GMC C35/C3500 Pickup 283 CID
  • 1968-1972 GMC C35/C3500 Pickup 307 CID
  • 1969-1972 GMC C35/C3500 Pickup 350 CID
  • 1967-1968 GMC K15/K1500 Pickup 327 CID
  • 1967-1967 GMC K15/K1500 Pickup 283 CID
  • 1968-1972 GMC K15/K1500 Pickup 307 CID
  • 1969-1972 GMC K15/K1500 Pickup 350 CID
  • 1967-1968 GMC K15/K1500 Suburban 327 CID
  • 1967-1967 GMC K15/K1500 Suburban 283 CID
  • 1969-1972 GMC K15/K1500 Suburban 350 CID
  • 1970-1972 GMC K15/K1500 Suburban 307 CID
  • 1967-1968 GMC K25/K2500 Pickup 327 CID
  • 1967-1967 GMC K25/K2500 Pickup 283 CID
  • 1968-1972 GMC K25/K2500 Pickup 307 CID
  • 1969-1972 GMC K25/K2500 Pickup 350 CID
  • 1967-1968 GMC K25/K2500 Suburban 327 CID
  • 1968-1972 GMC K25/K2500 Suburban 307 CID
  • 1968-1972 GMC K35/K3500 Pickup 307 CID
  • 1968-1968 GMC K35/K3500 Pickup 327 CID
  • 1969-1972 GMC K35/K3500 Pickup 350 CID
  • 1970-1972 GMC Jimmy 350 CID
  • 1970-1972 GMC Jimmy 307 CID

Emissions:

  • This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.

Instructions:

Fitment Notes:

  • Fits most angle plug heads.
  • Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 and ZZ6 engines.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.