In high-performance racing engines, microscopic metal shavings are a harsh reality. Whether it is standard wear from a fresh engine break-in or the early warning signs of a failing bearing, those suspended metal particles act like liquid sandpaper, destroying cylinder walls and oil pumps if left to circulate. The Longacre Magnetic Drain Plug is the simplest and most effective way to pull that destructive debris directly out of the oil supply.
Designed with a common 1/2"-20 thread pitch, this plug is a direct replacement for the standard, non-magnetic drain bolts found on many popular aftermarket racing oil pans (such as Moroso, Canton, or Milodon). Featuring a heavy-duty, high-pull magnet permanently embedded in the tip, it captures and holds ferrous metal fragments tightly against the plug. When the pit crew drains the oil after a race weekend, a quick inspection of this plug provides instant, crucial feedback on the internal health of the motor.
Key Features
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High-Strength Magnet: Engineered with an industrial-grade magnet that won't lose its pull under extreme engine oil temperatures, ensuring it traps even the finest metallic dust that standard oil filters might miss.
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Early Warning Diagnostic: Serves as a vital diagnostic tool. A clean magnet means a healthy engine, while a heavy buildup of metal shavings alerts the engine builder to an internal failure before a rod goes through the block.
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Direct-Fit 1/2"-20 Threads: Precision-machined to thread perfectly into the 1/2"-20 ports standard on many domestic V8 aftermarket oil pans and dry sump tanks, ensuring a secure, leak-free seal.
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Durable Hex Head: Features a crisp, heavy-duty hex head that resists stripping or rounding off during rapid, hot-pit oil changes.
