Oil Drain Plug

The MR. GASKET oil drain plug (model 4470) is a transmission fluid drain plug engineered for mechanics and enthusiasts who demand reliable, leak-free operation in their drivetrain systems. Whether you're performing routine transmission servicing, rebuilding a gearbox, or upgrading to a custom pan, this drain plug provides the secure sealing performance required for proper fluid containment during maintenance intervals. Built by a trusted name in automotive performance and restoration, this component is essential for any serious transmission work where fluid loss and contamination must be prevented.

This drain plug is designed to fit a 1/2 inch hole specification, making it compatible with a broad range of transmission pans and aftermarket applications where standard fastener sizing matters. The compact, precision-engineered design—measuring 3.25 inches in length with a 0.8 inch body width—ensures it seats flush without fouling brake lines, exhaust, or suspension components in tight underbody spaces. MR. GASKET's manufacturing focuses on consistent thread engagement and sealing surface finish, reducing the risk of slow weeps or catastrophic leaks that can compromise transmission function and create shop-floor hazards. The lightweight construction (0.09 lbs) means zero impact on vehicle dynamics while maintaining the structural integrity needed for repeated removal and reinstallation cycles.

Transmission technicians, hot rod builders, and DIY mechanics benefit most from stocking this drain plug in their toolkit for both stock restorations and custom fabrication projects. Installation is straightforward: simply drill or confirm your transmission pan or custom sump has a 1/2 inch hole, apply threadsealing compound to the plug's threads if desired, and torque to manufacturer specifications (typically 15–25 ft-lbs for most applications). Compatible with manual and automatic transmission pans across domestic and import platforms, this plug is an affordable, dependable component that eliminates the need for improvised fasteners or high-risk reuse of damaged OEM plugs. Keep several on hand for service calls, race shop builds, or fleet maintenance operations.