Holley EFI Weld-On EGT Sensor Bung - 1/4" NPT Female - Stainless - (Set of 8) H77403FXL A unique combustion chamber design

A unique combustion chamber design positions the spark plug closer to the center of the cylinder

Includes fuel rail mounting brackets in two sizes for more options in fuel injectors (EFI Model)

Required for 289-302 V8's and 1967-69 AMC

2008-2016 Ford F-350 Super Duty 98

this raised one-piece guide plate set is designed for Chevrolet 265-400 Small Block engines with 7/16" studs and 5/16" pushrods

Holley EFI Weld-On EGT Sensor Bung - 1/4" NPT Female - Stainless - (Set of 8) H77403FXL A unique combustion chamber designProduct Description: EGT Sensor Bung Weld On 1 4 in NPT Female Stainless Natural Set of 8 Holley is quickly becoming The New Standard In EFI! Holleys HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holleys EFI throttle body powers every NASCAR Sprint Cup Series team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod