This is a Bosch PMGR ("107" and "108" Series) Starter That Looks a Little Like a 16547 (2 Bolt Mount). The Armature is Longer, and So is the Drive Pinion (Approx. 45mm). There is No 3rd Mounting Hole, as There is in the 17134, and the 17222. Although These Units Vary Slightly in Size, They Interchange.