Ultimate 8.8 Ford 8.8" Rear End Swap Kit for Lexus IS300

The "Ultimate GR88" 8.8 conversion kit for the Lexus IS300 utilizes our new HD Cast 8.8 differential cover. The cover features main cap supporting load bolts, a breather port, a rear fill port, a side fill port, and drain port. The rear cover uses a bolt on mounting plate which allows the cover to be mounted directly into your car with no modifications. ----- The GR88 Ultimate kit has the following advantages: GR88 Ultimate rear diff cover, which offers higher fluid capacity for better gear lubrication, better cooling and less fluid volatility (no catch can!) Cover has breather port at 2 o'clock position for less "splash out" Easy maintenance - back AND side fill ports allows oil changes while diff is in car Precision CNC machining - always square and will always seal without leaks Deeper bowl for big gear clearance. Previous cover setup had clearance issues with larger gears Easy install, one-step install process with load bolts. No more installing cover, then setting up load bolts