defed 0 #1 Posted September 11, 2009 the WH part # is 102819 which crosses to wix #51521....but this has a bypass valve, which i think you do not want on these hydro units? i have read where wix #51410 is the filter to use...it has no bypass. is this the correct filter? i presume it is the better choice as the wix site states that it is a hydraulic filter while the other is just a spin-on lube filter. thanks Dave edit: i meant this to be in the tranny section! if mods can move it, please do. Share this post Link to post Share on other sites
canam1991 2 #2 Posted September 12, 2009 fram ph7328 Share this post Link to post Share on other sites
dgoyette 12 #3 Posted September 12, 2009 wix 51410 is correct (NAPA Gold 1410) is correct. I would go with this over the Fram for sure. Napa tried to give me 1521 too when they crossed referenced. I recently learned that the reason you do NOT want a filter with a by pass is that any dirt is harmful to the hydro. The by pass is a safety that will allow oil flow if the filter gets clogged. I was told better to let the unit get oil starved for a while that to let dirt flow by. If the filter is clogged and the oil just by passes you wont even know dirt is flowing though the system. Share this post Link to post Share on other sites
defed 0 #4 Posted September 12, 2009 thanks, that's what i thought, but just wanted to be sure i had the correct non-bypass filter. Share this post Link to post Share on other sites
73-18 automatic 8 #5 Posted September 12, 2009 If you have or know someone that has a Amsoil account I found a hydraulic filter by Donaldson P550210 Let me know if you need any help :scratchead: Share this post Link to post Share on other sites