what brand of spark plugs are recommended for a 1999 sohc 2.5

NGK are what many people seem to use and recommend for Subaru's.

Denso platinum's are what I use - quite a bit cheaper than the NGK's platinums or iridiums and they are basically the same plug. Japanese made.

 

GD

Had good luck with NGK thusfar.

I don't believe the 99 calls for anything exotic.

 

I run the NGK Ugroove 2 dollar plugs with the green writing BKR6E-11/BKRE5-11 or something like that.

 

And stay away from Bosch Platinum.

I'm quite happy with NGK G-Power plugs...NGK's base platinum(nothing fancy) plugs, about $3 each.

I also use NGK's spark plug wires.

Both plugs and wires have been quite reliable in my 2000 Legacy wagon.

check your owners manual - it should give a listing of recommended brands/types of spark plugs. go with the first recommendation in the list - if you cant get those, then go to the next one and so on.

 

there is zero reason to run an expensive, fancy plug if it isnt a specific recommendation for your application - unless you have more money than you need....