SKU: 89420173948

Pacemaker | 1 3/4" Tri-Y Competition Headers | 351 Windsor Spread Port XR-XY | PH4036 L/R

Sale price$534.59 Regular price$593.99
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Description

Pacemaker | 1 3/4" Tri-Y Competition Headers | 351 Windsor Spread Port XR-XY | PH4036 L/RPacemaker Tri Y Competition Headers 351 Windsor Spread Port Head PH4036 L R Engineered for high performance small block Ford builds, the Pacemaker PH4036 Competition series headers are designed specifically for the 351 Windsor engine equipped with Spread Port Dual Bolt Pattern cylinder heads. Unlike standard Windsor headers, these feature a Tri Y design with large 1" (44mm) primary pipes that step into 2" (51mm) secondaries, ultimately flowing into a

Pacemaker Tri-Y Competition Headers - 351 Windsor Spread Port Head - PH4036 L/R

Engineered for high-performance small block Ford builds, the Pacemaker PH4036 Competition series headers are designed specifically for the 351 Windsor engine equipped with Spread Port / Dual Bolt Pattern cylinder heads. Unlike standard Windsor headers, these feature a Tri-Y design with large 1¾" (44mm) primary pipes that step into 2" (51mm) secondaries, ultimately flowing into a 3" (76mm) outlet. This configuration is ideal for maximizing mid-range torque and high-end horsepower in classic Falcon and Fairlane models. Whether you are running a period-correct XR-XY or performing an engine swap into later chassis, these Australian-made headers provide the precision fitment and superior flow required for competition-level performance.

Features:

This product offers the following high-performance features:

  • Spread Port Compatibility: Designed exclusively for 351 Windsor heads featuring the wider dual bolt pattern.
  • Competition Tri-Y Design: Optimized for a broad power band and increased exhaust gas velocity.
  • Heavy-Duty Piping: 1¾" (44mm) primary and 2" (51mm) secondary mandrel-bent pipes for maximum flow.
  • Large 3" Outlet: 3" (76mm) collectors support high-horsepower engine configurations.
  • Broad Fitment Range: Suitable for original XR-XY Falcons and a wide variety of Ford engine swap models.
Product Specifications for PH4036 L/R
Feature Value Feature Value
Part # PH 4036 Outlet 3" (76mm)
Primary Pipe 1¾" (44mm) Secondary Pipe 2" (51mm)
P/Steering Yes Air Con Yes
Fitting Time 3½ Hrs Gasket N/A

Important Notes:

  • Head Type: This product will NOT fit standard Windsor heads. It requires the wider bolt pattern found on Spread Port / Dual Bolt Hole heads.
  • Engine Size: Will NOT fit 289 or 302 Windsor engines.
  • Transmission: Will NOT fit vehicles equipped with a C6 Transmission.
  • Engine Swaps: Fits XA-XF Falcons and ZF-ZL Fairlanes with a 351 Windsor swap. Note: Column automatic models will require linkage modification for fitment.

Important Information

  • The image shown may not reflect the actual product
  • Shipping times may vary depending on destination and stock availability

Vehicle Applications:

Make Model From To Body Series Engine Variant Drivetrain
Ford Falcon / Fairlane 1966 1972 Sedan / Coupe / Wagon XR, XT, XW, XY / ZA-ZD 351 Windsor (Spread Port) Manual & Automatic RWD
Ford Falcon / Fairlane 1972 1993 Sedan / Ute / Wagon XA-XF / ZF-ZL (Swaps) 351 Windsor (Spread Port) Manual & Automatic RWD
Warranty Information
Product Warranty Period
Pacemaker Headers Two (2) years.
Pacemaker King Brown 4x4 Exhaust systems Five (5) years.
Pacemaker Sports exhaust systems Five (5) years.
Fabrication products and accessories One (1) year.

Payment & Security:
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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89420173948

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4.8 ★★★★★
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Matthew Anderson
Port Orchard, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
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Reviewed in the United States on February 18, 2026
T
Verified Purchase
terlynn4
Alexandria, US
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do. I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
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Reviewed in the United States on April 30, 2026
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Verified Purchase
Shannon Brace
Lowell, US
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
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Reviewed in the United States on May 31, 2026
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Anna
Draper, US
★★★★★ 5
Nice chew toy
Color: Dogwood Mushroom, Size: Medium, Color: Dogwood Mushroom, Size: Medium
Super durable and puppy loves it. It was a bit hard for her at first but now at 5 months it’s one of her favorite things to gnaw on! It is heavy for the size but seems to be great quality and has given many hours of chew time with minimal wear.
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Reviewed in the United States on March 12, 2026
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Jennifer
Alexandria, US
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026

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