Gen2 option is a genuine Toyota increased volume oil pump for 3S and 5S. Works only with Gen2 and Moroso oil pans. When installing on a 3S, reuse your stock oil pump gear as it has a different tooth count. Includes mounting location for optional crankshaft position sensor kit!

Gen3/4/5 options are genuine Toyota replacements. If you're adding a crank position sensor to a Gen3, you can swap to a Gen4/5 pump, but you'll need the upper oil pan as well.