The Spicer TTC Gear Mainshaft (Back Taper), part number 49-8-21 or 49821, is a manual transmission mainshaft gear designed for heavy-duty drivetrain applications. The back taper profile is a defining characteristic that sets this gear apart from standard mainshaft configurations, making correct part identification critical before ordering. Sold individually, this is a genuine Spicer TTC transmission component available through Pro Gear and Transmission. If you need help confirming this is the right part for your transmission, give us a call before placing your order.
Features
Spicer TTC genuine manual transmission mainshaft gear
Back taper design, confirm correct taper orientation before ordering
Part number 49-8-21 or 49821
Sold as individual unit (each)
Cross-references: 49-8-21, 49821
