My new part (1157251102) looked so full of promise with it's blue genuine parts label, and it's shiny metal it's manufacture date stamped 10/1987

However the installation was about to take a turn for the worse, I didn't realise at first, naively thinking a genuine part would just bolt-on

It turns out my new part didn't have threads tapped in the four bolt holes!

Can you believe it!?

So with a bit of cursing, I dragged out my tap and die set

If you get lucky you won't need to tap the holes on your replacement regulator