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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
4.6 ★★★★★
Based on 1745 reviews
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Product Reviews
★★★★★ 3
Not my cup of tea.
Size: X-Large, Color: Black
The sweater seemed to be well made and fit me well. The color and style were nice and it's a comfortable material, but it's just not my style. The weave is so very open, it feels like I'm wearing an afghan from the back of the sofa. That kind of defeats the purpose of a sweater for me.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Men's relaxed fit cardigan
Size: XX-Large, Color: Dark Blue Stripe Knit, Size: XX-Large, Color: Dark Blue Stripe Knit
This Amazon Essentialsl men's relaxed fit cardigan is a stylish option for men. The cardigan is short sleeved and relaxed in fit. I ordered an XXL for my huband, which is his normal size, and it fits him well and is relaxed through the shoulders and body of the cardigan. The one we chose is blue and white striped with a white border on the sleeves and hem and a white collar. It's 100% cotton and is soft to the touch. It looks really nice on my husband, and he says it feels comfortable to wear. The weight is somewhat heavy, so I think for him, he will mostly wear it when it's a bit cooler. It gets very hot here in summer, but this will be nice when the weather cools off. He often wears short sleeves in colder months, too. This cardigan can be machine washed in cold, but it should be dried flat (the way you generally dry sweaters so they'll keep their shape). It's a very nice looking cardigan, and it looks great on my husband. I'm very pleased with the style and the quality.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Unbeatable Price! Great Quality!
Size: Medium, Color: Dark Green Stripe Knit, Size: Medium, Color: Dark Green Stripe Knit
I was very impressed with the softness and quality of this shirt. I am 6'1 and 195 lbs. and the medium shirt was a perfect fit. I will agree that the size is true to fit. The only thing I didn't like was the length. The length is short, so it comes to just to the top of my waist when wearing, however, that is the style of this cardigan. A longer length is my personal preference since I am taller. Also, with this being cotton, I would not recommend putting this garment in the dryer as it will likely shrink. The color (I got green) is just as pictured and the green and navy color mix blend well together. Although knitted, you do not see through the shirt, so an undershirt is not required. The price tag is unbeatable as you will not find a knitted cardigan anywhere else at this low price. Overall, I think it is a great buy, and I would highly recommend it.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Great fit.
Fit Type: Regular Fit, Color: Charcoal Heather/Charcoal Heather, Size: 5X-Large Big
Im 6'4 360lbs. They're not thick but and the neck is a little looser than what im use to. But overall im happy with the quality and the length of the shirt. I got a big belly and the shirt doesn't expose any of my belly and not too long where. It looks like a tall tee. Definitely will grab these again.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Quality!
Fit Type: Regular Fit, Color: Charcoal Heather/Charcoal Heather, Size: Small
The quality of these shirts surprise me and I recommend them to anyone.
Great fit, beautiful heavyweight fabric that feels soft to the touch.
Amazing!
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Reviewed in the United States on May 28, 2026