Tomei Expreme Headers | 2003-2013 Nissan 350Z/370Z & Infiniti G35/G37 | Fits VQ35DE, VQ35HR, VQ37VHR | Equal-Length Design | +15-25 WHP Gains | Race-Proven
Uncork serious power from your 2003-2013 Nissan 350Z/370Z or Infiniti G35/G37 with Tomei Expreme Headers, the gold standard for VQ performance that replace the restrictive OEM manifolds and weak aftermarket copies with race-engineered, equal-length stainless headers designed in Japan and dyno-proven on street and track VQs, because stock manifolds kill exhaust velocity and cheap headers crack or leak while these are mandrel-bent 304 stainless with 1.77in primaries merging into 4-1 collectors using Tomei’s tuned runner lengths to maximize scavenging across the entire RPM band, delivering real +15-25 WHP and +12-20 WTQ gains with sharper throttle response and a raw, high-pitched VQ tone that made Tomei famous, and they’re a direct bolt-on for all 2003-2007 350Z/G35 VQ35DE Non-RevUp and RevUp, 2007-2008 350Z/G35 VQ35HR, and 2009-2013 370Z/G37 VQ37VHR including Coupe, Sedan, AWD, and Nismo trims, clearing motor mounts, steering shaft, and AC lines while using thick 10mm CNC flanges and high-temp gaskets to eliminate warping and leaks, and they retain OEM O2 sensor locations for use with stock cats, high-flow cats, or test pipes so you choose street or full race setup, and every header is TIG-welded, back-purged, and solution heat-treated for strength then surface-treated to resist corrosion and blue discoloration, and the design maintains full ground clearance with no low-hanging pipes, and install requires no cutting or modifications, and Tomei pressure-tests every set for leaks and checks flange flatness so you get perfect fitment out of the box, making Expreme Headers the ultimate bolt-on for your DE, HR, or VHR if you want proven Japanese engineering, max flow, and that signature Tomei sound without the fitment and quality issues that plague copycat brands.
Key Features:
- Fits 2003-2013 350Z/370Z & G35/G37: Direct bolt-on for VQ35DE Non-RevUp, RevUp, VQ35HR, and VQ37VHR. Coupe, Sedan, AWD, and Nismo supported.
- Dyno-Proven +15-25 WHP Gains: Equal-length 4-1 design maximizes scavenging. Adds +12-20 WTQ with sharper throttle response across RPM range.
- Race-Spec 1.77in Primaries: Mandrel-bent 304 stainless primaries tuned by Tomei Japan. Optimized for velocity without killing low-end torque.
- Thick 10mm CNC Flanges: Precision-machined flanges resist warping under heat. Prevents exhaust leaks vs thin aftermarket copies.
- TIG-Welded & Back-Purged: Full-penetration welds done in argon back-purge. Solution heat-treated for strength and crack resistance.
- Retains OEM O2 Locations: Works with stock cats, high-flow cats, or test pipes. No CEL on stock ECU but tuning recommended for max gains.
- Clears AC, Steering, & Motor Mounts: Engineered around VQ bay for true bolt-on fit. No denting, cutting, or relocating needed.
- Signature Tomei High-Pitch Tone: Raw, aggressive VQ sound with clean top-end scream. No rasp or drone when paired with quality exhaust.
- Maintains Full Ground Clearance: No low-hanging primaries or collectors. Safe for lowered cars and daily driving.
- Pressure-Tested & Surface-Treated: Every set checked for leaks and flange flatness. Treated finish resists corrosion and blue discoloration.