Cobb Carbon Fiber Engine Cover - WRX MY15-21 fuel injector The increased dwell time can

The increased dwell time can lead to more complete combustion and reduced detonation tendency allowing for slightly higher compression ratios

All EJ w/ single scroll turbo

5mm straight thread size

There are two variants of these gaskets depending on the model year range

Other than complete set all parts sold individually

Cobb Carbon Fiber Engine Cover - WRX MY15-21 fuel injector The increased dwell time canREDLINE CARBON FIBER STYLE Cobb's Redline series carbon fiber engine cover replaces the boring plastic cover. Ideally used when upgrading the intercooler but will fit with stock intercooler as well. Constructed of genuine 2x2 twill carbon fiber cloth and finished in a clear coat designed to hold up under high engine bay temperatures. Satin black powder coated brackets, black button head screws, and nylon washers are supplied. A Cobb Redline badge adds