Nippondenso starters are assembled in the U.S.A. with heavy-duty components and tested with state-of-the-art equipment Solenoid plunger, return damper and springs are replaced with stronger components Clutch shaft and rollers are replaced with precision-ground and hardened parts for longer service life All components are assembled with a special lube for starter roller clutch applications CNC-machined billet mounting noses are held together with aerospace fasteners After assembly, all starters go to a dyno test including hi-low voltage, stall torque, solenoid engagement, amperage draw, load test, maximum rpm and motor impulse wave form Made in the U.S.A.. STARTER BLK 07-17 B-TWIN