I think mine was 3rd party gasket and as long as you supplement the corners and half circles at the front end with some gasketmaker paste and pattern tighten the cover bolts u should be reet.
Mine was leaking like a geriatrics tenalady before i replaced it just under 2 years ago.
Also replaced the oil filter housing gasket at the same time.
Hasn't spilled a drip since.
I made a mammoth thread somewhere if u can find it back. Has some pics too.
Good luck