This shaft fits the Titan Standard (Series 1) 2.0L dry sump pump. The length is correct for pumps with the current Titan Series 1 Pump Rear Cover (Part No. 177-26-02), which is designed to accept a bolt-on tachometer drive gearbox. Some older Titan pumps had a one-piece rear cover, which has the tach drive gearbox cast as part of the rear cover itself. Pumps with the older one-piece rear cover must shorten this shaft to fit.