The Eaton Fuller 20388 is an auxiliary reduction mainshaft gear for Eaton Fuller manual transmissions. This gear carries cross-reference numbers including 19223, 20388-SP, 20388SP, S-6601, and Navistar 588839C1 and 588839C2, making it a common replacement across a range of heavy-duty transmission builds. Sold individually, this part is sourced direct and sold by Pro Gear and Transmission. Not sure this is your gear? Call us to confirm proper fit for your application.
Features
Eaton Fuller OEM part number 20388
Auxiliary reduction mainshaft gear for heavy-duty manual transmissions
Cross-references: 19223, 20388-SP, S-6601, Navistar 588839C1 and 588839C2
Alternate part numbers include FUL-20388, SAS-20388, and ZBF20388
Sold as a single unit (each)
