Any body know? The FSM doesn't say exactly, only the general specs for bolt types and sizes, but also notes that those specs do not apply to bolts that are exposed to high temps. My pump blew out today and I am in the process of installing a new one. BTW, I got it at Napa and specifically asked them if it was a Toyota part, twice. Both times they said "yes". Well, it is an aftermarket pump, but I am in a jam on a Sunday so I did not take it back. The original went 250+K, guess I'll rebuild it for when the AM craps out. Thanks for any info.