Pacemaker | 1⅞" Competition Headers | Holden HQ HJ HX HZ WB LS Engine Swap | PH5343 L/R
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.
| 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:
| 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 |
| 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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Pacemaker | 1⅞" Competition Headers | Holden HQ HJ HX HZ WB LS Engine Swap | PH5343 L/R
Pacemaker | 1⅞" Competition Headers | Holden HQ HJ HX HZ WB LS Engine Swap | PH5343 L/R
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.
| 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:
| 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 |
| 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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
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.
| 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:
| 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 |
| 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.











