For elliptical-shaped Torx Plus® fasteners Services GM - transmission bell housing bolts & Ford - seat belt anchors Size: TP55 1/2" Square Drive ATTENTION: Torx Plus® will not fit standard Torx® fasteners / Standard Torx® tools will strip if used in Torx Plus® applications Applications Make Model Component Years GM 4L60-E family: 4L60E / 4L65E / 4L70E Transmission bellhousing bolts Late 1996–Early 2009 Ford F-150 (3.5L EcoBoost) Cam phaser bolts 2017–present Ford Expedition (3.5L EcoBoost) Cam phaser bolts 2018–2019 Lincoln Navigator (3.5L EcoBoost) Cam phaser bolts 2018–2019 Ford F-Series pickups (various gens) Pickup bed mounting bolts Varies by generation Ford Super Duty (F-250/F-350 etc.) Front seat mounting bolts (seat rails) 2000s–2010s Ford Mustang Mach-E Front seat mounting bolts (seat rails) 2021–present Rivian R1T Body-to-frame/body bolts 2022–present Rivian R1T / R1S Underbody/running-board bracket points (uses same TP55 body bolts) 2022–present
