Description
Main bearings are installed
Universal Mounting System: Features a quick-release clip system that attaches securely to almost any front or rear scooter rack in seconds
Black powder coated finish
Vespa: Primavera
Intake Lobe: 26
Crankshaft (16 Tooth); 139QMB speedo Main bearings are installedThis OEM replacement crankshaft assembly fits 139QMB engines with 16 tooth oil pump drives. Main bearings are installed. Original Parts For Scooters SKU 151 19 Specifications: Stroke: 41. 4mm Overall Length: 247mm Thread Size (tapered side): M10x1. 25 Thread Size (spline side): M12x1. 25 Bearing Outer Diameter (tapered side): 42mm Bearing Outer Diameter (spline side): 47mm Number of Splines: 26 Number of Teeth (oil pump drive gear): 16 139QMB based