Holley Needle & Seat - Titanium Needle and Seat Assembly (.150" Seat) 4X-Large Add both style and performance

Add both style and performance to your ride

2-1/2 lb Extinguisher

This allows users to take advantage of the precise factory resistor calibration when a sensor is new but then allows for free-air calibrations if the user desires when the sensor ages

Wideband Controller

110 in / 0

Holley Needle & Seat - Titanium Needle and Seat Assembly (.150" Seat) 4X-Large Add both style and performanceWith a . 150" seat, this needle and seat assembly is about as big as you can get. What's really tricky, though, is that the needle is made of titanium! This needle design is very responsive to changes in flow rates and has excellent sealing capabilities. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI