SKU: 52815942328

Pacemaker | 1 3/4" Tri-Y Competition Headers | Holden HQ-WB 304-355 5.0L EFI Conv | PH5275 L/R

Sale price$507.33 Regular price$563.70
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

Pacemaker | 1 3/4" Tri-Y Competition Headers | Holden HQ-WB 304-355 5.0L EFI Conv | PH5275 L/RPacemaker 1 3 4" Competition Tri Y Headers Holden HQ WB 304 355 5. 0L EFI PH5275 L R Maximize the performance of your EFI converted classic Holden with these premium Pacemaker Competition Tri Y headers. Specifically designed for HQ through WB models fitted with a 5 Litre EFI motor (304) or EFI heads on a traditional block, these headers deliver exceptional exhaust scavenging for high performance 304, 355, or supercharged builds. Note: Engineered for

Pacemaker 1 3/4" Competition Tri-Y Headers - Holden HQ-WB 304-355 5.0L EFI - PH5275 L/R

Maximize the performance of your EFI-converted classic Holden with these premium Pacemaker Competition Tri-Y headers. Specifically designed for HQ through WB models fitted with a 5 Litre EFI motor (304) or EFI heads on a traditional block, these headers deliver exceptional exhaust scavenging for high-performance 304, 355, or supercharged builds. Note: Engineered for engine conversions using VN-VT Series 1 engine platforms.

Features:

This product offers the following high-performance features:

  • Competition Tri-Y Design: Features large 1¾" (44mm) primary pipes transitioning to 2" (51mm) secondaries for maximum torque and high-rev flow.
  • Stroker & Supercharger Ready: Specifically tuned to support 5.7 Litre stroked engines or supercharged applications requiring high-volume exhaust evacuation.
  • Broad Compatibility: Precision engineered to clear various manual and automatic transmissions, including Supra 5-speed and Turbo 700 conversions.
Product Specifications for PH5275 L/R
Feature Value Feature Value
Part # PH 5275 Gasket DSF 63
P/Steering Yes Primary Pipe 1¾" (44mm)
Air Con Yes Secondary Pipe 2" (51mm)
Oxy Sen Yes Outlet 3" (76mm)
E.G.R N/A Y Branch N/A
Fitting Time 2 Hrs Design Competition Tri-Y

Important Notes:

  • Compatible with High Energy Sump (including HE2101).
  • Will clear HQ type mechanical clutch linkages.
  • Fits a wide range of transmissions including Australian 4-speed, VN-VS 5-speed, Supra 5-speed, Trimatic, and Turbo 350/400/700.

Important Information

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

Vehicle Applications:

Vehicle Applications for PH5275 L/R
Make Model From To Body Series Engine Variant Drivetrain
HOLDEN
Holden Kingswood / Monaro / Ute 1971 1984 Sedan / Wagon / Ute / Van HQ-WB 304 / 308 EFI 5.0L Engine Conv. 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: 52815942328

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Tsia
Whiting, US
★★★★★ 4
Just as pictured
Size: X-Large, Color: Mauve/Apples
It is sized big so I suggest that you order a size down.other than that it is just as pictured.
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Reviewed in the United States on November 13, 2025
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Cynthia
Belleville, US
★★★★★ 5
Good
Size: Medium, Color: Pink/Unicorn
Fits as expected.
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Reviewed in the United States on March 26, 2026
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Tam I M
Whiting, US
★★★★★ 5
Great quality
Very comfortable and good quality we have washed it multiple times and still looks great
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Reviewed in the United States on November 24, 2025
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Jia
Port Orchard, US
★★★★★ 5
The pants are of excellent quality
Size: XX-Large, Color: Mauve/Apples
The pants are of excellent quality, made from thick material that feels very warm. By comparison, the long-sleeve T-shirt is thinner and not as warm as the pants.
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Reviewed in the United States on October 24, 2025
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Peggie Brown
Bozeman, US
★★★★★ 5
Cute toddlers outfit
Size: 2T, Color: Mauve/Apples
The material is good made well reasonably priced
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Reviewed in the United States on November 22, 2025

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