The Eaton Fuller Washer Update Kit K-3662 or K3662 is a genuine OEM kit designed to update the mainshaft washer arrangement in select Fuller twin-countershaft transmissions. The kit includes a mainshaft assembly (S-2688), three gears (4302384, 4303409, 4303477), an OD gear-mainshaft (4305051), six washers (four of 4302398 and two of 4303603), a 3-sided mainshaft key (4304614), a snap ring (16763), and three instruction letters (L-1096, L-1096-1, L-1096-2). Application evidence covers seven Eaton Fuller models: RTO-11708LL, RTOF-11708LL, RTOF-14708LL, RTX-11708LL, RTX-14708LL, RTXF-11708LL, and RTXF-14708LL. Call us to confirm proper fit for your specific transmission build.
Features
Genuine Eaton Fuller OEM update kit for mainshaft washer components
Includes mainshaft assembly S-2688 plus three mainshaft gears and OD gear-mainshaft 4305051
Contains six washers: four of part 4302398 and two of part 4303603
Includes 3-sided mainshaft key 4304614 and snap ring 16763
Three factory instruction letters (L-1096, L-1096-1, L-1096-2) included in kit
Fitment documented in OEM parts manuals for RTO-11708LL, RTOF-11708LL, RTOF-14708LL, RTX-11708LL, RTX-14708LL, RTXF-11708LL, and RTXF-14708LL
