The Eaton Fuller K-1858 or K1858 is a Basic Rebuild Kit covering the RTX-11509 and RTXF-11509 transmission models, as listed in Eaton's own parts manuals for those units. The kit contains a complete assortment of internal wear items: multiple roller bearings (including tapered roller and ball bearings), reverse gear idler shaft bearings, snap rings, springs, an oil seal, O-ring kit (K-1450), gasket kit (K-2199), and Eaton instruction letters. Having these components bundled in a single kit simplifies bench rebuilds and reduces the chance of missing a critical sealing or bearing component. Call us to confirm proper fit for your specific transmission serial number.
Interchanges:
- 66250
- EF66250
Features
Fits Eaton Fuller RTX-11509 and RTXF-11509 transmissions per Eaton parts manuals
Includes tapered roller bearing, ball bearings, and roller bearings for internal shafts
Reverse gear idler shaft bearings (qty 2) included
Snap rings (multiple sizes and quantities) and springs (qty 3) included
Oil seal, O-ring kit (K-1450), and gasket kit (K-2199) in one assembly
Eaton instruction letters (L-1680, L-3887, L-3987) included for rebuild guidance
Tech Specs
- Kit Number: K-1858
- Application: Eaton Fuller RTX-11509, RTXF-11509
- Snap Rings: 14317 (x2), 14750 (x1), 16723 (x2), 16763 (x2)
- Bearing, Roller, Tapered: 14367 (x1)
- Bearing, Roller: 20899 (x2)
- Bearing, Ball: 81052 (x2)
- Ball Bearing: 81504 (x1)
- Roller Bearing: 4306025 (x2)
- Reverse Gear Idler Shaft Bearing: 4308403 (x2)
- Bearing: 4308452 (x2), 5566507-BOX (x1)
- Spring: 14897 (x3)
- Oil Seal: 21036 (x1)
- O-Ring Kit: K-1450 (x1)
- Gasket Kit: K-2199 (x1)
- Instruction Letters: L-1680, L-3887, L-3987
