What if the strut-to-knuckle bolts are seized?
Documented on the 2012 Ford Mustang GT build
Published February 26, 2026
Apply penetrating oil and let it soak, use an impact wrench or breaker bar, and be prepared to replace damaged fasteners.
Full Answer
Apply penetrating oil and let it soak, use an impact wrench or breaker bar, and be prepared to replace damaged fasteners. The video shows seized bolts as an unexpected issue that added time to the job.
Documented In This Build
Related Knowledge
Can I reuse the old springs with new strut cartridges?How difficult is this job for a DIYer?Is a spring compressor required?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
Front strut assemblies (left & right)
KYB (example OEM-style replacement)$260
Upper strut mount kit (pair)
MOOG (or similar)$60
Strut-to-knuckle bolts & hardware kit
OEM/aftermarket hardware kit$25
Sway bar endlinks (pair)
MOOG (or similar)$50
Penetrating oil (PB Blaster/CRC)
PB Blaster$8
Wheel alignment (shop service)
$100
Related Tools
Torque wrench
Floor jack
Jack stands
Impact wrench / breaker bar
Ratchet set & metric sockets
Spring compressor (coil spring compressor)Generic
