Lisle Oil Pan Plug Rethread Kit 58850 — 1/2", 12mm & 14mm Repair Kit with Piloted Drill & Spring-Loaded Tap

When an oil pan drain plug becomes stripped or cross-threaded, the Lisle 58850 kit gives you the tools to repair the thread cleanly and quickly without removing the oil pan in many cases. The kit combines a guided drill, a spring-loaded tapping tool that self-aligns to the gasket surface, and a supply of magnetic replacement plugs so you can finish the job and return your vehicle to service.

How does the kit keep the new thread square and leak-free?

The kit’s standout feature is a piloted, spring-loaded tapping tool that seats against the gasket surface and forces the tap to stay perpendicular as it cuts. Accurate alignment reduces the risk of angled threads and helps the replacement plug seat evenly, lowering the chance of oil leaks.

• Piloted drill centers the hole before tapping to prevent wandering.
• Spring-loaded tap holder maintains perpendicular pressure during cutting.
• Designed to line up with the oil pan gasket surface for a true thread angle.

Which vehicles and materials will this rethread kit work on?

The Lisle 58850 is built for soft steel and aluminum oil pans and covers the three most common drain plug sizes used on many passenger cars and light trucks. It fits pans where there is sufficient access to operate the drill and tap while the pan remains installed.

• Compatible with soft steel and aluminum oil pans.
• Includes tooling for 1/2", 12 mm and 14 mm drain threads.
• Can often be used with the vehicle in place when access allows.

What’s included and how does each piece help complete the repair?

The kit bundles every piece needed to rethread the drain hole and install a durable replacement plug: a piloted drill to create a clean lead, a spring-loaded tapping tool to cut a straight thread, and five magnetic drain plugs to seal and capture metal debris. The magnetic plugs also provide temporary service while you verify there are no leaks.

• Piloted drill — centers and enlarges the hole for accurate tapping.
• Spring-loaded tapping tool — ensures perpendicular thread cutting to the gasket surface.
• Five magnetic drain plugs — replacement hardware in common sizes, plus debris capture.

How easy is it to use this kit for a DIY repair?

The Lisle 58850 is designed for experienced DIYers and professional mechanics alike. With basic hand tools and a safe working environment, you can rethread most pans in place; however, tight or obstructed undercarriage access may require pan removal.

• Simple step sequence: center drill, use tapping tool, install magnetic plug.
• Many repairs possible without removing the oil pan if access is sufficient.
• Requires standard hand tools and moderate mechanical skill for best results.

Who is this for: The Lisle 58850 Oil Pan Plug Rethread Kit is ideal for mechanics, fleet maintenance technicians, and hands-on car owners who need a reliable repair for stripped or damaged oil drain threads. If you maintain passenger cars or light trucks with aluminum or soft-steel pans and want a tool set that aligns the thread precisely and supplies replacement magnetic plugs, this kit is a compact, practical addition to your toolbox.