Is there any difference i need to replace mine soon z1 has the whole kit for like 380 oem but i was curious becuase I've seen some cheaper ones for 180 for both sides i even saw a pair on ebay going for 50 brand new for both sides which seems to good be true... any advice would be good thanks

 

I've never messed with valve covers, but 50 from ebay seems cheap and low quality. Oem nissan parts generally are more expensive than their aftermarket counterparts.

 

SO much labor involved in changing them......you want to do it right the first time.

I doubt you could get enough quality worth even trying for $50. They would almost certainly warp and leak.

 

Link for reference.
https://www.ebay.com/itm/NEW-Valve-C...lve+cover.TRS0

These look fine. I would never pay for OEM parts unless I needed to.

 

+1.