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85" Long High-Velocity Runners w/ Raised Velocity Stack Entries
5” or larger intake pipe (same casting as S4)
the Snap-Ups are easily removed and are reusable
O2 sensor bung thread pitch: M18 x 1
K-Tuned Firewall Grommet .65"/16.25mm Nissan 85" Long High-Velocity Runners w/K Tuned Firewall Grommet . 65" 16. 25mm Our Firewall Grommet is designed specifically for our engine harness (KTH ENG 306) as a clean and simple way of putting the harness through your firewall. It has an inside hole size of 0. 65" that can be used to pass anything that size or smaller through the firewall or other location. If you are using KTH ENG 204 (Engine Harness w Integrated Power Wire) you will have to open the hole up slightly to clear the