605KC4220 is a Mack countershaft for manual transmissions, sold individually. The countershaft carries the gears that mesh with the main shaft, which lets the driver change gear ratios as power moves through the transmission.
Our parts manuals list a countershaft at item 39 in the rear case components of the Mack T2080 / T2090 / T2100 (updated design synchronizer), T309L / T310 and T310M transmissions. The T309L / T310 and T310M listings are the version without PTO, with 18 teeth. Call Pro Gear and Transmission if you want help confirming it for your unit.
Interchanges:
- Mack 21962554
- 25132354
- 605KC4220
- 605KC4240
- 806906
Features
Mack countershaft for manual transmissions
Listed at item 39, rear case components, in the Mack T310M transmission
Also listed in the Mack T309L / T310 and T2080 / T2090 / T2100 transmissions
T310M listing is the version without PTO, 18 teeth
Sold individually (1 EACH)
Tech Specs
- Sell Pack: 1 EACH
- Fitment: Mack T310M Transmission
Used in these Mack models
