Alright guys, first post here. Owned my impreza for a few years now. I have the engine coming out at the end of the month after finding an oil leak which seems to be the rear main seal or oil separator plate. I was just wondering if anyone has any suggestions as to any other critical parts I should be looking at while the engine is out?

At the moment the parts I have gathered are,

Timing belt with tensioners
Water pump
Oil separator plate
Rocker cover gasket kit
4x high temp half moon seals
NGK laser platinum Range 7 spark plugs
Front crankshaft oil seal
Rear crankshaft oil seal
4x camshaft oil seals

My impreza is a v3 wrx sti, engine ej20k

Any info would be greatly appreciated thanks! Here's a photo from a wile back

 

If it's the original oil pump,then would be worthwhile taking it off and checking the backplate screws are tight/loctited as tend to work loose on the classics.

Mick

 

If your going that far why don't you forge it along with an engine refresh and a set of arp headstuds for piece of mind.