A4730500303
Crankshaft Gear
Detroit Diesel

The crankshaft gear is a fundamental element in the timing system, responsible for transferring rotational motion from the crankshaft to other engine components. Constructed from durable steel, it features a bore diameter of 80 mm and a pitch diameter of 177.48 mm, with an outer diameter of 185.40 mm. Its 72-tooth configuration ensures precise synchronization of the engine's camshaft and other timing parts. Proper engagement of this gear is critical for maintaining accurate valve timing, which influences overall engine performance, emissions, and fuel efficiency. The rugged design and high-quality materials enable it to endure the mechanical stresses of heavy-duty operation. Sourced through Source One Parts Center, this gear offers dependable performance and longevity, essential for engines compliant with EPA07, EPA10, and GHG17 standards, and helps prevent costly timing failures or engine damage.