1993 to 2010 4.6/5.4 Harmonic Balancer Install Bolt 2V,3V and 4V (does not work for GT500 or MMR 4.75) This bolt is required to install ANY (factory or aftermarket) harmonic balancer back onto the engine, the factory bolt method does not work and can damage the crankshaft threads. Make installing your balancer a snap with this simple bolt from MMR.
