SKU: 72410945652

Pacemaker | 1¾" Tuned Exhaust Headers | Holden HQ HJ HX HZ WB LS Engine Swap | PH5342 L/R

Sale price$551.83 Regular price$613.14
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Description

Pacemaker | 1¾" Tuned Exhaust Headers | Holden HQ HJ HX HZ WB LS Engine Swap | PH5342 L/RPacemaker 1" Tuned Design Exhaust Headers Holden HQ WB LS Engine Swap PH 5342 L R Modernize your classic Holden HQ, HJ, HX, HZ, or WB with the power of an LS V8 using these high quality Pacemaker Tuned design exhaust headers. Specifically engineered for LS1 (Gen III), LS2, and LS3 (Gen IV) engine conversions, these 4 into 1 headers feature 1" primary pipes. This design provides the perfect balance of exhaust flow and clearance, making it an ideal

Pacemaker 1¾" Tuned Design Exhaust Headers - Holden HQ-WB LS Engine Swap - PH 5342 L/R

Modernize your classic Holden HQ, HJ, HX, HZ, or WB with the power of an LS V8 using these high-quality Pacemaker Tuned design exhaust headers. Specifically engineered for LS1 (Gen III), LS2, and LS3 (Gen IV) engine conversions, these 4-into-1 headers feature 1¾" primary pipes. This design provides the perfect balance of exhaust flow and clearance, making it an ideal choice for street-driven performance builds and engine swaps requiring a professional fit and finish.

Features:

This product offers the following high-performance features:

  • TUNED 4-into-1 Design: Precision-engineered to optimize exhaust scavenging and improve power delivery across the RPM range.
  • Optimized Pipe Sizing: Features 1¾" (44mm) primary pipes leading to a 3" (76mm) outlet for efficient gas flow from 5.7L, 6.0L, and 6.2L engines.
  • Conversion Specific: Tailored for the Holden HQ-WB chassis to ensure proper fitment during an LS engine swap.
  • Full Accessory Support: Compatible with both Power Steering and Air Conditioning systems for a complete and functional build.
Product Specifications for PH 5342 L/R
Feature Value Feature Value
Part # PH 5342 Gasket DSF 138
P/Steering Yes Primary Pipe 1¾" (44mm)
Air Con Yes Secondary Pipe -
Oxy Sen Yes Outlet 3" (76mm)
Fitting Time 2 Hrs Design Tuned 4-into-1

Important Notes:

  • Engine Suitability: Engineered for 5.7L, 6.0L, and 6.2L LS V8 engines (LS1, LS2, LS3).
  • Suitable for both Manual and Automatic transmissions.
  • Includes Oxygen Sensor provisions for modern ECU integration.
  • Designed specifically for the engine conversion market in HQ-WB series Holdens.

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 PH 5342
Make Model From To Body Series Engine Variant Drivetrain
HOLDEN (LS ENGINE SWAP)
Holden Kingswood / Premier / Monaro / Statesman 1971 1984 Sedan / Ute / Wagon / Coupe / Statesman HQ-HJ-HX-HZ-WB 5.7L / 6.0L / 6.2L LS V8 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:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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: 72410945652

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Bruce
Lowell, US
★★★★★ 5
98% cotton comfort
Color: Black, Size: Large
It's true to size. I have a 42" chest and typically wear a large. I ordered large and it fits. Grab these while you can as most of these mock neck t shirts are a cotton poly blend. These are 98% cotton. This is important because although the cotton/poly blends dry quicker, they are uncomfortably warm if it gets above 70 F. I have purchased other mock turtlenecks and had my local dry cleaners convert them from long sleeves to short, but they are slightly heavier weight than these. I do wish that they made these in a dark green or military green color.
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Reviewed in the United States on March 26, 2026
B
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Bella
Pawtucket, US
★★★★★ 1
100% SYNTHETIC CONSTRUCTION!!!
Color: All White, Size: XX-Large, Color: All White, Size: XX-Large
When I bought this shirt, the listing claimed it was 95% cotton and 5% spandex... the shirt that arrived was 51% polyester, 43% viscose and 6% spandex! I have been impressed by some of their other clothing, but this is the first time I was completely lied to and bamboozled. I probably wouldn't have noticed if the shirt wasn't so hot, shiny, and uncomfortable! I will absolutely be returning this shirt. Not even CLOSE to what I wanted. Quite, quite disappointed.
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Reviewed in the United States on April 29, 2026
J
Verified Purchase
jerryejohnson
Battle Creek, US
★★★★★ 3
Just okay for price.
Color: All White, Size: Large
Average quality and fit. The neck is bigger than I would like. Would not purchase again.
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Reviewed in the United States on February 22, 2026
K
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Karen Matinyan
Draper, US
★★★★★ 5
Great product
Color: Black, Size: Medium
Very soft, good-looking t-shirt
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Reviewed in the United States on May 28, 2026
M
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MarZ
Houston, US
★★★★★ 5
Perfect Color
This shirt is so soft and the color is as depicted. Great mock turtle. Size is as expected. Ordered a large- 5’9 165# It fits well maybe a bit long but I wanted it loose.
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Reviewed in the United States on March 25, 2026

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