OEM specified. High temperature/high strength threadlocker for heavy-duty applications. Prevents bolts and press fits 3/8" to 1-1/2"(10mm to 38mm) from loosening due to shock, severe vibration and heat stress. Exclusive formulation for newer engines and high performance applications that require extreme temperature resistance. Suited for temperatures up to 450°F (232°C). Removable with heat and hand tools.