Separator Plates w/ Gaskets GM 4L60E 09-15

The Separator Plates w/ Gaskets for GM 4L60E 09-15 is a precision transmission rebuild component engineered for mechanics and transmission builders who demand OEM-level reliability in their 4L60E, 4L65E, and 4L70E overhauls. These separator plates serve as the critical internal dividers within your transmission's valve body, directing fluid flow and pressure regulation across multiple clutch packs and apply devices. Whether you're rebuilding a high-mileage truck transmission or servicing a performance build, proper separator plate condition directly impacts shift quality, line pressure stability, and long-term durability.

These TRANSGO separator plates are precision-machined to exacting tolerances, designed to control hydraulic apply timing and prevent internal cross-leakage that compromises shift firmness and transmission longevity. The included gaskets ensure a perfect seal between the separator plate and valve body, eliminating the micro-leaks that degrade line pressure and cause soft or delayed shifts under load. The compact 9.75 x 11.5 inch footprint with minimal 0.25 inch thickness fits seamlessly into the 4L60E family's proven architecture, maintaining the exact flow geometry engineers designed into this workhorse transmission platform.

Technicians rebuilding 2009–2015 GM 4L60E, 4L65E, and 4L70E transmissions will find this kit essential for any full overhaul or valve body service. The gasket set prevents comeback issues from fluid weeping between major transmission components, reducing warranty claims and customer frustration. This is a core rebuild item—not optional—for any transmission coming apart for inspection or repair, and it's particularly critical in trucks and SUVs operating under towing loads or frequent city driving where precise shift sequencing prevents band and clutch wear.