The Eaton Fuller countershaft, part number 4303621, is a coarse-pitch countershaft assembly that includes reverse and 1st gear. It is listed in the illustrated parts manuals for 38 Eaton Fuller transmission models, spanning the FM, RT, RTO, RTAO, RTOM, RTX, and RTXF series - including 10-speed through 18-speed configurations such as the RTO-14910B, RTX-16710B, and FM-14D310B, among others. Per the Eaton parts manuals, this coarse-pitch shaft must be used in place of its predecessor 4303619. Dimensions are 16.75 inches in length and 4.375 inches in cross-section. Call us to confirm fitment for your specific application.
Interchanges:
- 3088-4303621
- 3096976
- 4303619
- 4303621-SP
- 900052
- FUL4303621
- ZBF4303621
Features
Coarse-pitch countershaft assembly with reverse and 1st gear
Supersedes predecessor part number 4303619 - coarse-pitch version must be used
Listed in Eaton Fuller parts manuals for 38 transmission models across FM, RT, RTO, RTOM, RTX, and RTXF series
Covers 10-speed through 18-speed Eaton Fuller configurations
Dimensions: 16.75 in. length x 4.375 in. cross-section
Tech Specs
- Length: 16.75 in.
- Cross-Section: 4.375 in.
- Gear Configuration: Includes Reverse and 1st Gear
- Pitch: Coarse Pitch
- Supersedes: 4303619
- Application: Manual Transmission Countershaft Assembly
