{"product_id":"stainless-steel-exhaust-headers-for-infiniti-g35-2003-2006-3-5l","title":"Stainless Steel Exhaust Headers for Infiniti G35 (2003-2006) 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow Stainless Steel Exhaust Headers for 2003-2006 Infiniti G35 (V35)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Stainless Steel Exhaust Headers replace the restrictive factory cast iron manifolds on the 2003-2006 Infiniti G35 to reduce exhaust backpressure and optimize cylinder scavenging for improved power delivery.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Infiniti G35 Manifold Restriction\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust manifolds on the \u003cstrong\u003eV35\u003c\/strong\u003e chassis utilize rough cast-iron construction with compromised, unequal-length runners. These OEM manifolds suffer from abrupt directional transitions and internal casting flash that impede high-velocity exhaust pulses from the \u003cstrong\u003eVQ35DE\u003c\/strong\u003e cylinder head. The uneven runner geometry causes reversion pulses that contaminate adjacent combustion chambers, trapping residual heat soak inside the exhaust ports, increasing pumping losses, and choking high-RPM volumetric efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThese shorty performance headers feature a dedicated 2 x 3-1 runner configuration manufactured from mandrel-bent \u003cstrong\u003eT-304 stainless steel\u003c\/strong\u003e tubing. Sized with 1.75 x 1.25-inch oval primary inlets and smooth 2.25-inch collectors, each bank merges exhaust pulses smoothly into the factory catalytic converter flanges. CNC-machined, thick sealing flanges prevent thermal warpage across heat cycles, while integrated TIG-welded O2 sensor bungs retain stock sensor placement. The lowered backpressure optimizes exhaust gas velocity and scavenges spent gases rapidly, sharpening throttle response across the powerband.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Exhaust Headers (Left and Right)\u003c\/li\u003e\n  \u003cli\u003e2 Header Gaskets\u003c\/li\u003e\n  \u003cli\u003e2 Collector Gaskets\u003c\/li\u003e\n  \u003cli\u003eMounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2003-2006 Infiniti G35\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eVQ35DE \/ V35\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e260-298 hp \/ 260-270 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eHDS350ZG35\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003-2006 Infiniti G35 3.5L VQ35DE V6 (Rear-Wheel Drive)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the V35 G35?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2003-2006 Infiniti G35 equipped with the \u003cstrong\u003eVQ35DE\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit the Infiniti FX35, all-wheel-drive models, or later VQ35HR dual-throttle-body models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eShould header bolts be retorqued after installation?\u003c\/h4\u003e\n\u003cp\u003eYes, retorque all header bolts and collector hardware after the first 2 to 3 thermal heat cycles to ensure proper gasket compression and prevent exhaust leaks.\u003c\/p\u003e\n\n\u003ch3\u003eThe Infiniti Performance Caliber\u003c\/h3\u003e\n\u003cp\u003eTailored specifically for the high-revving characteristics of the JDM-engineered VQ platform, these headers unlock aggressive exhaust acoustics, sharper mid-range torque, and improved top-end breathability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67896005165304,"sku":"DS-EBSTRJC1I","price":156.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/stainless-steel-exhaust-headers-for-infiniti-g35-2003-2006-3-5l-1.jpg?v=1793290785","url":"https:\/\/performancechiptuning.com\/products\/stainless-steel-exhaust-headers-for-infiniti-g35-2003-2006-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}