Ford 2003 Mustang Workshop Manual page 1307

Crankshaft Seal Installer
303-635
Material
Item
Silicone Gasket and Sealant
F7AZ-19554-EA or equivalent
Super Premium SAE 5W-20
Motor Oil
XO-5W20-QSP or equivalent
Assembly
NOTE: During engine assembly, it may by necessary to check bearing clearances and end play. For
additional information, refer to
1. Record the main bearing code found on the front of the engine block.
2. Record the main bearing code found on the back of the crankshaft.
3. Using the data recorded earlier and the Bearing Select Fit Chart, Standard Bearings Chart
Specification
WSE-M4G323-
A4
WSS-M2C153-H
Section 303-00 .