Redline Trailer Parts RG04-250 Oil Bath Hub Cap Kit

The Redline Trailer Parts RG04-250 Oil Cap Kit is an oil bath hub cap kit designed to seal and protect trailer wheel hub bearings in AL-KO/Hayes oil bath axle systems. Built for 10K–12K AL-KO/Hayes oil bath axles used on heavy-duty utility, commercial, agricultural, and equipment trailers, it provides a secure seal while enabling easy inspection of lubricant levels and serves as an OEM replacement for AL-KO/Hayes 10K–12K axles. The kit includes a polycarbonate oil cap, O-ring, and rubber fill plug, with a 3.75 in outside diameter threaded oil bath hub cap designed to seal the hub and retain lubricant on heavy-duty trailers and fleet equipment using AL-KO/Hayes oil bath hubs.