Description: With 6.2l, diesel. S-series. 4.3l. 8 cylinder. Astro, Safari. 4.3l. G10-30 vans. 5.7l. All models. 4.8l, 6.0l. Corvette. 4 cylinder. GTO. Support the end of the transmission input shaft while the clutch is disengaged Allows for smooth changing of gears Helps keep transmission input shaft properly aligned This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors