Description 3SGE Beams Blacktop- CRANKSHAFT position sensor A new and genuine replacement crankshaft position sensor. This part is specific to only the Blacktop 3SGE Beams engine and can be found mounted to the oil pump behind the main crank pulley with its lead extending up the front exhaust side of the engine block. Compatibility – 3SGE Beams- Blacktop only – WILL NOT SUIT the Redtop series of beams engines nor any of the earlier 3SG engines
