{"product_id":"isr-performance-shorty-headers-nissan-350z-z33-infiniti-g35-vq35de","title":"ISR Performance Shorty Headers - Nissan 350Z Z33 Infiniti G35 VQ35DE","description":"\u003cp\u003eThe ISR Performance Shorty Headers are direct-replacement exhaust headers for the factory VQ35DE-powered Nissan 350Z and Infiniti G35. Built from 304 brushed stainless steel with 1 3\/4 inch primary tubing and heavy-duty flanges. Replaces the restrictive factory exhaust manifolds while retaining mid-range torque and adding top-end horsepower.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eThe factory VQ35DE exhaust manifolds are cast iron, heavy, and restrictive by design. The ISR Shorty Headers replace them with stainless tubular equivalents that flow significantly better while keeping a short primary length that preserves the VQ35DE's mid-range torque character. Top-end horsepower gains come from the reduced restriction and improved scavenging vs the factory cast manifolds.\u003c\/p\u003e\n\n\u003cp\u003eO2 sensor bungs are placed in the factory positions, which means you can reuse your factory O2 sensors and won't need a tune to address sensor placement on most builds.\u003c\/p\u003e\n\n\u003ch3\u003eImportant: This Is For Factory VQ35DE Engines\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThese shorty headers are direct replacements for the VQ35DE factory exhaust manifolds.\u003c\/strong\u003e They are NOT for LS-swapped 350Z builds - for LS swap headers, see the ISR HGC LS Swap Headers (IS-SSHD-350LS).\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2003-2008 Nissan 350Z (Z33) with factory VQ35DE engine\u003c\/li\u003e\n\u003cli\u003e2003-2007 Infiniti G35 with factory VQ35DE engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e304 brushed stainless steel construction\u003c\/li\u003e\n\u003cli\u003eHeavy-duty flanges\u003c\/li\u003e\n\u003cli\u003e1 3\/4 inch primary tubing\u003c\/li\u003e\n\u003cli\u003eDesigned to retain mid-range torque while adding top-end power\u003c\/li\u003e\n\u003cli\u003eO2 sensor bungs in factory positions (reuse factory O2 sensors)\u003c\/li\u003e\n\u003cli\u003eDirect replacement for VQ35DE factory exhaust manifolds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Stainless steel shorty headers (driver and passenger)\u003c\/li\u003e\n\u003cli\u003e2x 3-bolt exhaust gaskets\u003c\/li\u003e\n\u003cli\u003e2x Head-to-manifold gaskets\u003c\/li\u003e\n\u003cli\u003e6x Exhaust nuts\u003c\/li\u003e\n\u003cli\u003e6x Exhaust bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ISR Performance\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e IS-SSHD-VQ35SRT\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Shorty Headers (Pair)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e 2003-2008 Nissan 350Z, 2003-2007 Infiniti G35\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e Factory VQ35DE only (NOT for LS swaps - use IS-SSHD-350LS for those)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 brushed stainless steel\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003ePrimary Diameter:\u003c\/strong\u003e 1 3\/4 inch\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eO2 Sensor Compatibility:\u003c\/strong\u003e Factory O2 sensor placement preserved\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003ePower Character:\u003c\/strong\u003e Retains mid-range torque, adds top-end horsepower\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eLS Swap Variant:\u003c\/strong\u003e IS-SSHD-350LS (NOT this part - this part is for factory VQ35DE)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eSold:\u003c\/strong\u003e Pair (driver and passenger) with gaskets and hardware\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eLegality:\u003c\/strong\u003e Off-road and competition use only\u003c\/p\u003e","brand":"ISR Performance","offers":[{"title":"Default Title","offer_id":45957123539141,"sku":"IS-SSHD-VQ35SRT","price":660.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/2718\/9701\/files\/Shorty3__76166.1662578617.1280.1280__23408.1662579186.500.659.jpg?v=1773346645","url":"https:\/\/www.isrcompetition.com\/products\/isr-performance-shorty-headers-nissan-350z-z33-infiniti-g35-vq35de","provider":"ISR Competition","version":"1.0","type":"link"}