{"product_id":"advance-headers-commodore-vtii-vz-ls-tuned-4-into-1-extractors-a317tx","title":"Advance Headers | Mild Steel Tuned 4-into-1 Extractors | Holden Commodore VTII-VZ Monaro Statesman Crewman LS1 LS2 | A317TX","description":"\u003ch2\u003eAdvance Headers High-Performance Tuned Length 4-into-1 Mild Steel Exhaust Extractors for Holden Gen III LS1 \u0026amp; Gen IV LS2 V8 Platforms\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe 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.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"feature-block\"\u003e\n\u003cdiv class=\"feature-content pb-6\"\u003e\n\u003ch3 style=\"color: #e60000; font-weight: bold;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003ePRODUCT CONTENTS:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Heavy-Duty Mild Steel Tuned Length 4-into-1 Left-Hand Header Bank Assembly\u003c\/li\u003e\n\u003cli\u003e1 x Heavy-Duty Mild Steel Tuned Length 4-into-1 Right-Hand Header Bank Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced 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\u003c\/li\u003e\n\u003cli\u003eHeavy-wall, mandrel-bent 1¾\" primary pipelines maintain completely perfect internal diameters to clear backpressure bottlenecks entirely\u003c\/li\u003e\n\u003cli\u003eHigh-velocity 3\" outlet pipe collectors significantly boost exit volume capacity—ideal for high-lift camshaft configurations, dyno-tuned maps, and track use\u003c\/li\u003e\n\u003cli\u003eHeavy-duty mild steel construction structurally built to absorb intense thermal shock cycles, high-RPM vibration stresses, and harsh engine bay environments safely\u003c\/li\u003e\n\u003cli\u003eThick, 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\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"specs\"\u003e\n\u003cul class=\"flex flex-col space-y-2 text-xs\"\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eBrand:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eAdvance Headers\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003ePart Number:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eA317TX\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eMaterial:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eMild Steel (Standard Finish)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eExtractor Configuration:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eTuned Length 4-into-1 Headers\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003ePrimary Piping Size:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003e1¾\" (44.5mm)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eCollector Outlet Size:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003e3\" (76.2mm)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eEngine Suitability:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eGM Gen III LS1 (5.7L) \u0026amp; Gen IV LS2 \/ L76 \/ L98 (6.0L) V8 Petrol Only\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eEstimated Fitting Time:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003e3 Hours\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eWelding\/Modification Required:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eYes (Requires downstream exhaust adaptation to bridge the 3\" collectors back into standard or aftermarket cat configurations)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Crucial Generation-Specific Harness Extension \u0026amp; Fitment Requirements:\u003c\/strong\u003e\u003cbr\u003eDue 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:\u003cbr\u003e1. \u003cstrong\u003eVY Series II to VZ Models (5.7L LS1):\u003c\/strong\u003e Strictly requires \u003cstrong\u003e2 x Front Oxygen Sensor Extensions (Part No. OSEF)\u003c\/strong\u003e to securely bridge the primary management sensors back into position.\u003cbr\u003e2. \u003cstrong\u003e6.0-Litre V8 Engine Variants (VZ Series):\u003c\/strong\u003e Being a modern split emission management array, these engines strictly require a total of 4 link extensions: \u003cstrong\u003e2 x Front Oxygen Sensor Extensions (Part No. OSEF) AND 2 x Rear Oxygen Sensor Extensions (Part No. OSER)\u003c\/strong\u003e to satisfy full ECU diagnostics without fault tripping.\u003cbr\u003e3. \u003cstrong\u003eInduction Layout Note:\u003c\/strong\u003e Formed exclusively to bolt onto aluminum GM block patterns. Will not align with early VT Series I iron-block Holden 5.0L\/304 engines.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease 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.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe image shown may not reflect the actual product design.\u003c\/li\u003e\n\u003cli\u003eEnsure your vehicle details match the application guide below before purchasing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"font-family: Arial, sans-serif; max-width: 100%; padding: 20px; border: 1px solid #ccc; border-radius: 5px; font-size: 1rem;\" class=\"product-details-container\"\u003e\n\u003ch2\u003eVehicle Applications for A317TX Tuned Performance Extractors\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 10px;\"\u003e\n\u003ctable style=\"min-width: 1100px; border-collapse: collapse; font-size: 1rem; line-height: 1.5; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f0f0f0; border-bottom: 3px solid #333;\"\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eYear Range Spec\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eBody Type\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eChassis Series\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eEngine Details\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eFitting Time\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eDrivetrain \/ Sensor Extension Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eHolden\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eCommodore \/ Berlina \/ Calais \/ SS \/ HSV\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e1999 – 2006\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4-Door Sedan \/ 5-Door Station Wagon \/ Utility (Ute)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eVT Series II \/ VX \/ VY \/ VZ Series\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5.7L LS1 \u0026amp; 6.0L LS2 Gen III\/IV V8 Petrol Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e3.0 Hours\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRWD | 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 \u0026amp; 2x OSER extensions. Custom cat pipe adaptation needed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eHolden\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eMonaro \/ CV8 \/ HSV Coupe\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e2001 – 2006\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e2-Door Sports Coupe Muscle Variant\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eV2 \/ VZ Series Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5.7L LS1 \u0026amp; 6.0L LS2 Gen III\/IV V8 Petrol Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e3.0 Hours\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRWD | Heavy-duty tubular paths clear lower steering knuckles and standard subframes cleanly. Sensor extensions required based on build generation guidelines above.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eHolden\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eStatesman \/ Caprice \/ HSV Grange\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e1999 – 2006\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eLong-Wheelbase (LWB) Luxury Sedan\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eWH \/ WK \/ WL Series Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5.7L LS1 \u0026amp; 6.0L LS2 Gen III\/IV V8 Petrol Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e3.0 Hours\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRWD | Clears long-wheelbase chassis parameters and downstream floor panel layouts comfortably. Follow standard sensor wire extension parameters for WK\/WL series variants.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eHolden\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eCrewman \/ One Tonner\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e2003 – 2006\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4-Door Dual Cab Utility \/ Cab Chassis Heavy Duty\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eVY \/ VZ Commercial Lines\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5.7L LS1 \u0026amp; 6.0L LS2 Gen III\/IV V8 Petrol Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e3.0 Hours\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRWD \u0026amp; AWD | High-volume 1¾\" primaries provide ultimate mid-range exhaust scavenging velocity. Mapped safely past wider utility frames and Cross 8 front transfer cases.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003ePayment \u0026amp; Security\u003c\/h2\u003e\n\u003cp\u003eYour payment information is processed securely. We do not store credit card details nor have access to your credit card information.\u003c\/p\u003e","brand":"Advance Headers","offers":[{"title":"Default Title","offer_id":40480415481938,"sku":"A317TX","price":1179.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/7718\/9458\/files\/A317TX---Lrg-61-520x375.jpg?v=1747275287","url":"https:\/\/fastautoparts.com.au\/products\/advance-headers-commodore-vtii-vz-ls-tuned-4-into-1-extractors-a317tx","provider":"Fast Auto Parts Australia","version":"1.0","type":"link"}