Ford 2003 Mustang Workshop Manual page 2758

SECTION 308-03B: Manual Transaxle/Transmission — TR3650
DESCRIPTION AND OPERATION
Manual Transmission
The TR3650 five-speed manual transmission features the following:
The fifth speed gear functions as an overdrive gear.
The forward gears are synchronized and helical cut.
The reverse gear operates through a constant-mesh, fully synchronized system.
The shift interlock system prevents the engagement of more than one gear.
The countershaft is serviced as an assembly.
An aluminum main case, extension housing and bell housing.
Transmission Internal Components — Disassembled View
2003 Mustang Workshop Manual