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Description
Pacemaker | 1⅞" Competition Headers | Holden HQ HJ HX HZ WB LS Engine Swap | PH5343 L/RPacemaker 1" Tuned Competition Headers Holden HQ WB LS Engine Swap PH 5343 L R Convert your classic Holden HQ, HJ, HX, HZ, or WB to modern LS power with these premium Pacemaker Competition series headers. Specifically engineered for LS1 (Gen III), LS2, and LS3 (Gen IV) engine conversions, these headers feature a high flow 4 into 1 design with large 1" primary pipes. Designed for maximum performance, they are the perfect choice for high horsepower
Pacemaker 1⅞" Tuned Competition Headers - Holden HQ-WB LS Engine Swap - PH 5343 L/R
Convert your classic Holden HQ, HJ, HX, HZ, or WB to modern LS power with these premium Pacemaker Competition series headers. Specifically engineered for LS1 (Gen III), LS2, and LS3 (Gen IV) engine conversions, these headers feature a high-flow 4-into-1 design with large 1⅞" primary pipes. Designed for maximum performance, they are the perfect choice for high-horsepower street or competition builds, ensuring your LS swap breathes efficiently while maintaining essential clearances.
Features:
This product offers the following high-performance features:
- TUNED Competition Design: Engineered pipe lengths maximize exhaust scavenging and flow for 5.7L, 6.0L, and 6.2L LS engines.
- High-Flow Pipes: Large 1⅞" (48mm) primary pipes leading to a 3" (76mm) outlet, ideal for modified and high-output engines.
- Conversion Ready: Tailored specifically for the HQ-WB chassis to accommodate modern LS engine geometry.
- Full Accessory Compatibility: Designed to clear Power Steering and Air Conditioning systems for a comfortable, professional conversion.
Product Specifications for PH 5343 L/R
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5343 | Gasket | DSF 138 |
| P/Steering | Yes | Primary Pipe | 1⅞" (48mm) |
| Air Con | Yes | Secondary Pipe | - |
| Oxy Sen | Yes | Outlet | 3" (76mm) |
| Fitting Time | 2 Hrs | Design | Tuned 4-into-1 |
Important Notes:
- Engine Suitability: Fits LS1 (5.7L), LS2 (6.0L), and LS3 (6.2L) V8 engines.
- Compatible with both Manual and Automatic transmissions.
- Provisions for Oxygen Sensors are included for modern engine management integration.
- Ideal for vehicles being upgraded for high-performance use or modified applications.
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 5343
| 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:
- 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
4.1 ★★★★★
Based on 835 reviews
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Product Reviews
★★★★★ 1
Very disappointing workmanship. Last time.
Size: X-Large, Color: Lavender, Size: X-Large, Color: Lavender
Shirt came in actually nice day packaged. But opening it up spots all over the shirt very wheat material sending it back back.
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Reviewed in the United States on April 8, 2025
★★★★★ 5
High quality polo
Size: 3X-Large, Color: Dark Grey
Can’t beat this price and quality. With mainstream polos is going for about $80. This is a steal for the same quality. Fits good. Price is nice. Keeps me dry the golf course.
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Reviewed in the United States on July 22, 2025
★★★★★ 5
Awesome and comfortable jacket. Fit perfect and very warm.
Awesome and comfortable jacket. Fit perfect and very warm. The value on this is really really good. Would recommend. Easy to clean and looks beautiful.
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Reviewed in the United States on January 1, 2026
★★★★★ 4
Nice Stylish Midweight Jacket
Color: Dark Grey, Size: Medium, Color: Dark Grey, Size: Medium
I ordered this jacket because I wanted something with a little my style to wear out to dressy casual occasions. This jacket fits the bill. It looks nice in that it's got a casual laid back feel but at the same time you could wear over a collared shirt and it would look good.
I am 5'10" and about 165 lbs. I normally wear somewhere between a medium and large depending on the brand. I ordered a medium and it fit well. The arms and body were both the right length, not too short like some other jackets.
The reason I took 1 star off was because this is advertised as a winter puffer jacket and I wouldn't really call it that. It is a mid weight jacket that can get you by in southern winters but anything really cold I wouldn't wear this. Plus it's not a "puffer" jacket. It just has a minimal quilted feel to it but most of it is just a polyester glossy sweatshirt feel.
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Reviewed in the United States on October 29, 2025
★★★★★ 5
Maelreg Does It Again
Color: Dark Grey, Size: Medium
I just wrote a review for another Maelreg product. They're all good! lol 21st century fabrics are here to save us! ;) This one is also really well made. I love the fit and feel. It's perfect for those mild fall/spring days where an extra layer of windproof protection is just really handy. The arms aren't insulated, so it's great for active outdoor ventures. I use mine for jogging over a poly/blend wicking tee. It lives at the office where I sometimes need a stylish overcoat in the A/C freezing office. I bought a size M for my 5'10" 175 lb. frame and it fits perfectly. Just long enough to sit at the top of my glutes. The front of the jacket has a nice contrast/sheen that you don't see everywhere, it's a nice style addition. The poly blend fabric adds a nice degree of flex to the fit, it's comfortable under a heavy overcoat or over a light thermal layer. Super easy to launder on cold/low, and really low temp iron to rid it of those packaging wrinkles, and its easy care forever. Great product at a really nice price point, all things considered.
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Reviewed in the United States on October 23, 2025