Gasket - Trans Pan GM 700R4/4L60/4L60E/4L65E

The MOROSO Gasket - Trans Pan GM 700R4/4L60/4L60E/4L65E (Part #93104) is a precision-engineered transmission pan gasket designed for reliable sealing on GM's most widely used automatic transmissions. Built with a durable 3/16-inch thick rubber and steel composite construction, this gasket delivers permanent alignment capability that prevents pan-to-case misalignment during installation and operation—a critical factor in eliminating post-service leaks that commonly plague older transmission rebuilds.

The Perm-Align design feature addresses one of the most frustrating issues in transmission maintenance: gasket creep and pan shift that occurs under thermal cycling and torque load. The rubber-steel sandwich construction maintains compressive force across the entire pan surface while resisting transmission fluid degradation. At 0.92 lbs and dimensioned precisely for the pan mounting surface (14.05 x 16.95 inches), this gasket fits without modification and requires no custom fitting or edge trimming. The 3/16-inch thickness ensures adequate sealing pressure without over-compression that can cause gasket deterioration prematurely.

This gasket is essential for anyone rebuilding a 700R4, 4L60, 4L60E, or 4L65E transmission—whether performing a full overhaul, replacing a leaking pan, or completing a transmission swap. The 700R4 platform remains the go-to choice for street rod builders, classic truck restorations, and off-road conversions, and using OEM-specification gasket materials ensures the rebuild holds up to both stock and modified engine output. Installation pairs with standard 10mm pan bolts and requires only hand-tight torque sequencing to achieve proper sealing without risk of gasket blowout.