{"product_id":"stainless-steel-exhaust-headers-for-nissan-350z-2003-2006-3-5l","title":"Stainless Steel Exhaust Headers for Nissan 350Z (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 Nissan 350Z (Z33)\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 exhaust manifolds on the 2003-2006 Nissan 350Z to reduce exhaust backpressure and optimize cylinder scavenging for improved power delivery.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan 350Z Exhaust Manifold Bottleneck\u003c\/h3\u003e\n\u003cp\u003eThe OEM cast iron exhaust manifolds on the \u003cstrong\u003eZ33\u003c\/strong\u003e platform feature restrictive, uneven runner lengths and rough interior casting walls that generate severe turbulence. This restriction impedes exhaust gas velocity, increases cylinder head backpressure, and retains excessive thermal energy near the engine block. Under high-RPM track or performance driving, this restriction limits mid-to-high-range airflow dynamics and stifles the natural breathing potential of the naturally aspirated V6 platform.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered from mandrel-bent \u003cstrong\u003eT-304 stainless steel\u003c\/strong\u003e tubing, these shorty headers feature a tuned 2 x 3-into-1 runner configuration with 1.75 x 1.25-inch oval primary inlets transitioning into 2.25-inch collectors. The smooth internal bore accelerates exhaust scavenging pulses to pull burned gases cleanly from each combustion chamber. Precision CNC-machined, thick flanges eliminate surface warping under sustained heat cycles to prevent high-temperature blowouts, while integrated O2 sensor bungs allow a direct bolt-on transition to the OEM catalytic converters without cutting or welding.\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\u003eInstallation 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 Nissan 350Z\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 \/ Z33\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;\"\u003e287 hp \/ 274 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 Nissan 350Z 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 Z33 350Z?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2003-2006 Nissan 350Z equipped with the \u003cstrong\u003eVQ35DE\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit Infiniti FX35 or later 350Z models equipped with the dual-intake VQ35HR engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre these headers legal for street use in emissions-controlled states?\u003c\/h4\u003e\n\u003cp\u003eThese aftermarket headers are intended for off-road and racing use only as they are not CARB-certified and lack an Executive Order (EO) number for street use in California and states following CARB regulations.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Performance Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-revving JDM performance, these headers liberate the iconic tone of the \u003cstrong\u003eVQ35DE\u003c\/strong\u003e while sharpening throttle response and optimizing top-end pull across the rev range.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67896000610552,"sku":"DS-E27A40EMP","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-nissan-350z-2003-2006-3-5l-1.jpg?v=1793290748","url":"https:\/\/performancechiptuning.com\/es\/products\/stainless-steel-exhaust-headers-for-nissan-350z-2003-2006-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}