5J8334 REPLACEMENT HYD PUMP 621J SCRAPER Fits CATOne New Aftermarket Replacement Hydraulic Pump Fits Caterpillar (Fits CAT) 621J Wheel Tractor Scraper This aftermarket replacement hydraulic pump is a direct replacement for OEM part number 5J8334, designed to restore hydraulic system function on the Fits Caterpillar 621J open bowl wheel tractor scraper. The hydraulic pump is a critical component of the 621J's hydraulic circuit, providing pressurized flow to support bowl lift, apron, and ejector
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