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Tri-Y Headers for 65-81 GM 265-400 SBC 1-5/8in Primary Ceramic Coated D375Y

Tri-Y Headers for 65-81 GM 265-400 SBC 1-5/8in Primary Ceramic Coated D375Y

D375Y-BKLK

$1,035.50 USD
$1,035.50 USD
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Overview:

65-77 Various GM SBC Tri Y Silver Ctd

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. This fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.

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

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: Metallic Ceramic Coated
  • Flange Thickness: 0.375 IN
  • Gasket Or Seal Included: Yes
  • Gaskets Included: Yes
  • Grade Type: Performance
  • Header Material: Steel
  • Header Style: Tri-Y
  • Material: 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: Semi-Gloss
  • Title: Doug's Tri Y Header 65-81 Various GM 265-400 SBC 1 5/8-2" Primary 2 1/2" Collector Silver Ceramic Coated D375Y
  • Tube Wall Thickness: 16 GU
  • Part Number: D375Y

Applications:

  • 1965-1966 Chevrolet C10 Pickup 283 CID
  • 1966-1966 Chevrolet C10 Pickup 327 CID
  • 1965-1966 Chevrolet C20 Pickup 283 CID
  • 1968-1968 Chevrolet Chevy II 307 CID
  • 1968-1968 Chevrolet Chevy II 327 CID
  • 1968-1973 Chevrolet Chevelle 307 CID
  • 1968-1973 Chevrolet Chevelle 350 CID
  • 1968-1968 Chevrolet Chevelle 327 CID
  • 1970-1973 Chevrolet Chevelle 400 CID
  • 1965-1969 Chevrolet Bel Air 327 CID
  • 1965-1967 Chevrolet Bel Air 283 CID
  • 1968-1968 Chevrolet Bel Air 307 CID
  • 1967-1974 Chevrolet Camaro 350 CID
  • 1967-1969 Chevrolet Camaro 302 CID
  • 1969-1973 Chevrolet Camaro 307 CID
  • 1966-1969 Chevrolet Caprice 327 CID
  • 1966-1967 Chevrolet Caprice 283 CID
  • 1968-1973 Chevrolet Caprice 307 CID
  • 1970-1974 Chevrolet Caprice 400 CID
  • 1955-1956 Chevrolet Corvette 265 CID
  • 1957-1961 Chevrolet Corvette 283 CID
  • 1962-1962 Chevrolet Corvette 327 CID
  • 1968-1977 Chevrolet El Camino 350 CID
  • 1968-1973 Chevrolet El Camino 307 CID
  • 1968-1969 Chevrolet El Camino 327 CID
  • 1970-1976 Chevrolet El Camino 400 CID
  • 1976-1977 Chevrolet El Camino 305 CID
  • 1965-1969 Chevrolet Impala 327 CID
  • 1965-1967 Chevrolet Impala 283 CID
  • 1968-1973 Chevrolet Impala 307 CID
  • 1969-1974 Chevrolet Impala 350 CID
  • 1970-1974 Chevrolet Impala 400 CID
  • 1973-1977 Chevrolet Malibu 350 CID
  • 1973-1976 Chevrolet Malibu 400 CID
  • 1973-1973 Chevrolet Malibu 307 CID
  • 1976-1977 Chevrolet Malibu 305 CID
  • 1969-1974 Chevrolet Nova 350 CID
  • 1969-1973 Chevrolet Nova 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.
  • Requires removal or modification of locking steering columns if equipped.
  • Does not fit 67-69 Camaro with A/C.
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Policies and FAQs

Return Policy

We accept returns on products within 30 days of delivery. Return shipping is the responsibility of the buyer unless we, the seller, are at fault.

Fault reasons include but are not limited to:
  • Buyer was shipped the wrong product
  • Buyer was shipped a damaged product
  • The product page had incorrect fitment and the part does not fit the Buyer's vehicle

The Buyer will not be refunded outbound shipping unless the Seller (Car Part People) is at fault.
 

In cases where the Buyer purchases and ships the return please note that if the Shipper (ex. USPS, FedEx, UPS, etc.) loses the return we will not be able to offer a refund as the Buyer must contact the Shipper and make a claim.
 

All products must be returned in original condition, meaning that the product must not be damaged, installed, or missing pieces/parts. If the product is not in original condition a deduction will be issued of up to 50% of the purchase price of the product.
 
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
 

When we, the seller, are at fault, please Contact Us for a return label, products returned with a shipping label not provided by the seller will not be refunded to the buyer. Please also note that our return labels are issued with the dimensions and weight of the original shipment, if the product is being returned in any box/package besides the original please contact us with the dimensions and weight.
 

Returns must be sent to this address:
Car Part People
218 S Lyman St.
Wadsworth, OH 44281
 

Products returned directly to a manufacturer or the incorrect address may be issued a deduction or denied a refund entirely.
 

If a product was delivered outside the 30 day return window or is no longer in original condition please contact us as we may be able to issue a refund in store credit and/or with a deduction. If this is the case please Contact Us as these situations are handled on a case by case basis.
 

If there are any questions, concerns, or doubts about return eligibility please Contact Us and we would be more than happy to assist you.
 
This policy and page were last updated: July 14th 2023

FAQs

|Q. What is an Intermediate Brake Line?

|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to  a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines. 

|Q. What is included in a pre bent brake line kit?

|A. Our kits include all of the solid metal lines for that section of the vehicle

|Q. I need to return something -  what's your return policy?

|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.

  • Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.

  • If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly. 

|Q. I live in the area. Can I come and pick up parts?

|A. Yes but you will need to order in advance. All of our items are not stocked at our location. So please place your order online and we will notify you when it is ready for pick up.

|Q. Do you sell just one line from a kit? 

|A. Unfortunately we cannot offer single lines outside of kits

|Q. Do your parts have a guarantee?

|A. Yes all are covered by the manufactures standard warranty's. Most warranties cover the cost of parts. Any installation or other fees are non-refundable.

|Q. Can I pay with a check, money order, or cash?

|A. Online we accept PayPal and all major Credit Cards. If your are picking an item up we gladly accept cash. 

|Q. Can I have this item shipped to someone other than myself?

|A. We can only ship to your confirmed address in PayPal or your billing address if you pay with a credit card. 

|Q. How long will it take for my order to arrive?

|A. Orders typically Arrive within 3 to 10 days depending if it is a stocked item or something  we have manufactured at time of sale. 

|Q. I need a part for my car that you don't have listed. Can I special order one

|A. Yes please send us a message through our custom orders page. 

|Q. Will you ship the part to anywhere in the world?

|A. Yes, but items sent out of the continental U.S. may incur additional charges based on their destination. 

|Q. How do I determine left or right of my vehicle?

|A. The left and right sides on a vehicle are determined as though you were sitting in the driver's seat. The left is the driver's side, and the right is the passenger's side.

|Q. I just got my tracking number and there's no info!

|A. Check it again tomorrow. It takes up to 1 day for the carrier to give status and a delivery date. UPS and FedEx provide delivery dates, USPS usually does not but they take no longer than 5 business days.

|Q. Do you ship to APO or FPO addresses?

|A. Yes! Thank you for your military service!

Still have a question or concern?  Please Contact Us!