Plug Hex Drain Dirt

The JERICO Plug Hex Drain Dirt is a precision brass drain plug engineered for manual transmission servicing and fluid changes. Designed with a 1/2 inch NPT threaded connection and hexagonal Allen head configuration, this drain plug delivers reliable sealing and easy removal without rounding or stripping—critical features when working on transmission systems where proper fluid drainage is essential to maintaining performance and extending component life.

Brass construction provides superior corrosion resistance compared to steel alternatives, particularly valuable in humid or salt-air environments where oxidation can compromise seal integrity. The Allen head design accommodates standard hex key tools, eliminating fumbling with specialty wrenches during routine maintenance. At just 0.08 lbs with compact dimensions of 0.75 x 0.6 x 0.75 inches, this plug integrates seamlessly into tight transmission housings where space is at a premium. The 1/2 inch NPT thread standard ensures compatibility with most transmission pan openings and aftermarket transmission cases used in performance builds and restorations.

This drain plug serves transmission technicians, off-road enthusiasts performing fluid maintenance on lifted vehicles, weekend mechanics rebuilding manual gearboxes, and shops specializing in transmission service. Whether managing routine fluid changes or undertaking a complete transmission overhaul, a quality drain plug prevents cross-threading and ensures the pan seals properly on reinstallation. The natural brass finish resists galling when tightened to proper torque specifications, reducing the risk of damage that could lead to leaks or stripped threads.

Keep a spare JERICO drain plug in your shop kit—they're inexpensive insurance against the frustration of discovering a damaged plug mid-service when the transmission is already open.