4 Deg Short (3/4in) Crank key

The MR. GASKET 4 Degree Short (3/4 inch) Crank Key is a precision Woodruff crankshaft key designed specifically for classic V8 and inline-6 engines that require offset crankshaft timing correction. This component is essential for engine builders and restoration specialists working on high-performance engine assemblies.

Crafted from steel and coated in copper for corrosion resistance, this crank key allows for the advancement or retardation of ignition timing without the need for full crankshaft replacement. The 4-degree offset enables precise tuning of ignition advance, enhancing performance with both period-correct and modern ignition systems.

Engine builders, hot rodders, and vintage performance enthusiasts will find this crank key invaluable for optimizing throttle response and fuel efficiency in classic American muscle cars. Proper installation requires alignment with the keyway to ensure reliable power transmission between the crankshaft and timing gear.