Caterpillar 099-3798 Swing Motor Seal Kit

This swing motor seal kit is engineered for the Caterpillar E200B and EL200B track-type excavators equipped with the SG08E (MFB160) hydraulic swing motor. The kit contains all necessary dynamic and static seals including piston seals, wear rings, O-rings, and backup rings manufactured to OEM dimensional tolerances. Designed to withstand continuous high-pressure hydraulic cycles up to 35 MPa operating pressure in construction machinery environments. Compatible with machines powered by Caterpillar 3116, Mitsubishi S6KT, and Caterpillar 3066 diesel engines. Direct replacement for Caterpillar OEM part numbers 099-3798 and 096-5942. Ensures precise sealing performance to prevent internal bypass and external leakage, restoring swing torque and speed efficiency.