VQ37VHR Lower Intake Manifold | Performance Upgrade for 2008-2013 Infiniti G37/Q60 & 2009-2020 Nissan 370Z | CNC Ported Runners | +10-18 WHP Gains | Direct Fit Aluminum Plenum

Squeeze every ounce of NA power from your 2008-2013 Infiniti G37/Q60 or 2009-2020 Nissan 370Z with this VQ37VHR Lower Intake Manifold performance upgrade that fixes the biggest airflow restriction in the VHR intake tract, because the factory composite lower plenum uses narrow, uneven runners with sharp casting flash that choke velocity and starve cylinders 5 and 6 at high RPM, while this CNC-ported cast aluminum lower manifold features enlarged, radiused runners with matched port entry and exit geometry that increase cross-sectional area and flow balance to all 6 cylinders, delivering real +10-18 WHP and +8-14 WTQ gains on bolt-on and tuned VQ37VHR setups by improving volumetric efficiency from 4k RPM to redline, and it’s a 100% direct-fit replacement for all G37/Q60 Coupe, Sedan, Convertible, AWD, IPL and 370Z Base, Touring, Sport, Nismo models that bolts to your factory or aftermarket upper plenum using OEM gaskets and hardware with no modifications, cutting, or drilling required, and the internal porting eliminates turbulence and the factory casting seam to create smooth laminar flow that improves throttle response, cures the lean rear-cylinder condition common on tuned VHRs, and delivers safer, more consistent AFRs across the bank, and the aluminum construction dissipates heat faster than the stock plastic to lower IATs during back-to-back pulls and track sessions, and it retains all factory injector ports, vacuum references, and coolant passages so you stay emissions compliant with no CEL and no tune required to run, though a tune is recommended to maximize fueling for the added airflow, and every manifold is flow-bench tested and vacuum checked to ensure perfect cylinder balance and leak-free operation, and the low-profile design clears stock strut bars and maintains factory hood clearance, and the aggressive intake sound at WOT gets noticeably deeper as the engine finally breathes, making this the best supporting mod for VHRs already running intakes, headers, exhaust, and an upper plenum if you want to finish the intake side and stop leaving power on the table before going forced induction.