The Eaton Fuller Auxiliary Mainshaft, part number 20472, is the OEM auxiliary section mainshaft used in RTX and RTXF series 9-speed transmissions. Per the Eaton illustrated parts manuals, this shaft is listed as item 5 in the Mainshaft and Synchro (Aux) group for 18 transmission models spanning the RTX-12609A, RTX-12609B, RTX-12609P, RTX-12609R, RTX-12610, RTX-13609A, RTX-13609A through RTX-13609R, and all corresponding RTXF variants. The shaft measures 12.875 in. in length. Cross-references include 20472-SP, 27203-5031, 3088-20472, and FOHZ7061C. Available from Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission build.
Features
Genuine Eaton Fuller Auxiliary Mainshaft, part number 20472
Fits 18 RTX and RTXF series transmission models including RTX-12609A/B/P/R, RTX-12610, RTX-13609A/B/P/R, and all RTXF equivalents
Listed as item 5 in the Mainshaft and Synchro (Aux) group in Eaton's own illustrated parts manuals
Shaft length 12.875 in.
Cross-references: 20472-SP or 20472SP, 27203-5031 or 272035031, 3088-20472 or 308820472, FOHZ7061C
Sold by Pro Gear and Transmission
Tech Specs
- Length: 12.875 in.
- Width: 3.25 in.
- Height: 3.375 in.
- Fits Transmission Models: RTX-12609A, RTX-12609B, RTX-12609P, RTX-12609R, RTX-12610, RTX-13609A, RTX-13609B, RTX-13609P, RTX-13609R, RTXF-12609A, RTXF-12609B, RTXF-12609P, RTXF-12609R, RTXF-12610, RTXF-13609A, RTXF-13609B, RTXF-13609P, RTXF-13609R
- Group: Mainshaft and Synchro (Aux)
- Cross-References: 20472-SP, 27203-5031, 3088-20472, FOHZ7061C
