After numerous in-house conversions, it came to our attention that the nylon MAF bung included w/ our MAF tube was prone to warping/curling around the o-ring seal in hot climates allowing unmetered air to enter the engine. While we’re unsure whether this was batch specific decided to be proactive and machine a new fitting out of billet to mitigate any future issues! This bung includes all hardware for mounting (MAF sensor NOT included).