Do I need to replace the crankshaft front seal when reassembling the timing cover?
Documented on the 2012 Ford Mustang GT build
Published September 11, 2026
If the seal was removed during disassembly or shows any signs of wear or leakage, replace it while you have access.
Full Answer
If the seal was removed during disassembly or shows any signs of wear or leakage, replace it while you have access. It's inexpensive and much easier to do during reassembly than having to remove the cover again later.
Documented In This Build
Related Knowledge
What torque specs should I use for the timing cover bolts?What should I check after reassembling the timing cover?Should I use a gasket, RTV, or both when reinstalling the timing cover?How do I know if the PCV grommet is bad?What torque should I use for the coil mounting bolt?What causes oil to fill the spark plug wells?Can I drive the car if the plugs are covered in oil?How often should I clean the fuel injectors?
Related Parts
Timing cover gasket / front cover paper/O-ring gasket
Motorcraft / Fel-Pro$25
RTV silicone sealant (engine-safe)
Permatex (or equivalent)$8
Front crankshaft seal (timing cover seal)
Motorcraft / National$20
Timing cover bolts / fastener set (if old bolts are damaged)
$15
Front timing cover
Motorcraft / OEM or aftermarket equivalent$200
Related Tools
Socket set and ratchet
Torque wrenchCraftsman (example)
Gasket scraper / razor blade
Floor jack and jack stands or engine support
Shop rags and brake cleaner / solvent
Seal installer / driver or appropriate size socket
Harmonic balancer installer / press or appropriate installer tool
