Advance Headers | Mild Steel Tuned 4-into-1 Extractors | Holden Commodore VTII-VZ Monaro Statesman Crewman LS1 LS2 | A317TX
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Advance Headers | Mild Steel Tuned 4-into-1 Extractors | Holden Com...
Description
Description
Advance Headers High-Performance Tuned Length 4-into-1 Mild Steel Exhaust Extractors for Holden Gen III LS1 & Gen IV LS2 V8 Platforms
The Advance Headers Performance Tuned Length 4-into-1 Extractors (A317TX) are the ultimate bolt-on manifold solution for late-model Australian muscle, passenger car, and heavy-duty utility lines running the General Motors 5.7-Litre Gen III LS1 and 6.0-Litre Gen IV LS2/L76/L98 engine families. Designed strictly for street/strip enthusiasts and performance tourers demanding peak gas flow efficiency, this premium kit features true tuned-length primary tube paths merging into massive high-velocity collectors. Covering VT Series II through VZ Commodore platforms, V8 Monaro coupes, WH to WL Statesman flagships, and rugged Crewman dual-cabs, this kit maximizes mid-to-high RPM scavenging velocity to unlock maximum horsepower and throatier, uncompromised V8 acoustic signatures.
PRODUCT CONTENTS:
- 1 x Heavy-Duty Mild Steel Tuned Length 4-into-1 Left-Hand Header Bank Assembly
- 1 x Heavy-Duty Mild Steel Tuned Length 4-into-1 Right-Hand Header Bank Assembly
Key Features:
- Advanced tuned-length 4-into-1 layout groups gas flow routing columns uniformly to drastically increase top-end scavenged velocity fields above typical Tri-Y designs
- Heavy-wall, mandrel-bent 1¾" primary pipelines maintain completely perfect internal diameters to clear backpressure bottlenecks entirely
- High-velocity 3" outlet pipe collectors significantly boost exit volume capacity—ideal for high-lift camshaft configurations, dyno-tuned maps, and track use
- Heavy-duty mild steel construction structurally built to absorb intense thermal shock cycles, high-RPM vibration stresses, and harsh engine bay environments safely
- Thick, precision laser-cut cylinder head flanges maintain a flat, ultra-stable mating footprint to permanently guard against warping, face distortion, and high-pressure gas leaks
Specifications:
- Brand: Advance Headers
- Part Number: A317TX
- Material: Mild Steel (Standard Finish)
- Extractor Configuration: Tuned Length 4-into-1 Headers
- Primary Piping Size: 1¾" (44.5mm)
- Collector Outlet Size: 3" (76.2mm)
- Engine Suitability: GM Gen III LS1 (5.7L) & Gen IV LS2 / L76 / L98 (6.0L) V8 Petrol Only
- Estimated Fitting Time: 3 Hours
- Welding/Modification Required: Yes (Requires downstream exhaust adaptation to bridge the 3" collectors back into standard or aftermarket cat configurations)
⚠️ Crucial Generation-Specific Harness Extension & Fitment Requirements:
Due to the optimized tuned-length runner design moving the final collectors further downstream, factory oxygen sensor wiring paths must be extended using specialized harness links to prevent system faults:
1. VY Series II to VZ Models (5.7L LS1): Strictly requires 2 x Front Oxygen Sensor Extensions (Part No. OSEF) to securely bridge the primary management sensors back into position.
2. 6.0-Litre V8 Engine Variants (VZ Series): Being a modern split emission management array, these engines strictly require a total of 4 link extensions: 2 x Front Oxygen Sensor Extensions (Part No. OSEF) AND 2 x Rear Oxygen Sensor Extensions (Part No. OSER) to satisfy full ECU diagnostics without fault tripping.
3. Induction Layout Note: Formed exclusively to bolt onto aluminum GM block patterns. Will not align with early VT Series I iron-block Holden 5.0L/304 engines.
Please Note: Due to the high-velocity 3" collector exit formatting and required loom extensions, professional installation by an exhaust specialist or qualified performance automotive technician is highly recommended to guarantee absolute alignment bounds and a perfect gas-tight, leak-free seal.
Important Information
- The image shown may not reflect the actual product design.
- Ensure your vehicle details match the application guide below before purchasing.
Vehicle Applications for A317TX Tuned Performance Extractors
| Make | Model | Year Range Spec | Body Type | Chassis Series | Engine Details | Fitting Time | Drivetrain / Sensor Extension Notes |
|---|---|---|---|---|---|---|---|
| Holden | Commodore / Berlina / Calais / SS / HSV | 1999 – 2006 | 4-Door Sedan / 5-Door Station Wagon / Utility (Ute) | VT Series II / VX / VY / VZ Series | 5.7L LS1 & 6.0L LS2 Gen III/IV V8 Petrol Only | 3.0 Hours | RWD | Tuned 4-into-1 design path. Primary pipes merge into massive 3" outlets. **Note:** VY Series II to VZ (5.7L) requires 2x OSEF extensions. VZ 6.0L variants require 2x OSEF & 2x OSER extensions. Custom cat pipe adaptation needed. |
| Holden | Monaro / CV8 / HSV Coupe | 2001 – 2006 | 2-Door Sports Coupe Muscle Variant | V2 / VZ Series Only | 5.7L LS1 & 6.0L LS2 Gen III/IV V8 Petrol Only | 3.0 Hours | RWD | Heavy-duty tubular paths clear lower steering knuckles and standard subframes cleanly. Sensor extensions required based on build generation guidelines above. |
| Holden | Statesman / Caprice / HSV Grange | 1999 – 2006 | Long-Wheelbase (LWB) Luxury Sedan | WH / WK / WL Series Only | 5.7L LS1 & 6.0L LS2 Gen III/IV V8 Petrol Only | 3.0 Hours | RWD | Clears long-wheelbase chassis parameters and downstream floor panel layouts comfortably. Follow standard sensor wire extension parameters for WK/WL series variants. |
| Holden | Crewman / One Tonner | 2003 – 2006 | 4-Door Dual Cab Utility / Cab Chassis Heavy Duty | VY / VZ Commercial Lines | 5.7L LS1 & 6.0L LS2 Gen III/IV V8 Petrol Only | 3.0 Hours | RWD & AWD | High-volume 1¾" primaries provide ultimate mid-range exhaust scavenging velocity. Mapped safely past wider utility frames and Cross 8 front transfer cases. |
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