This used front differential is a reliable replacement solution for Caterpillar 740B and 735B articulated trucks. Compatible with 740B serial prefixes L4E, T4R, L4F, T4S and 735B prefixes L4D, T4P, this unit includes part numbers 3564662, 20R9435, and 3564664. Perfect for heavy-duty rebuilds or repairs. Available through Ringers, the parts division of Timmins Mechanical Solutions.