36-43300A9 43300A1 Oil Reservoir Cap For Mercury Mariner 43300A5 43300A6 Outboard 105 JET 135 140 150 175 200 210 225 240 HP EFI PRO MAX M2 Blackmax Ssportjet Boat XR2 XR4 XR6 V‑6

The cap still leaked no matter how tight I tightened it. May be something slight with the tank is why I still gave it 4 stars. The gasket for these caps are so thin (just like the original) that it doesn't compensate for anything that may be off. I replaced the gasket with a thicker one and was able to stop it from leaking.

Unit technically works but doesn't work like factory. Factory unit sounds off once floater hits a certain point and doesn't stop even if volume drops only if volume in tank rises. New part gets to one point and goes off but once fluid level falls below that point alarm stops sounding off. If someone else had this engine they could easily burn up motor. Thankfully I'm smart enough to know once it goes off to shut it off. First install it leaked like all other reviews. Took back off and noticed gasket wasn't installed in grove of cap correctly. Put gasket in correctly and leak stopped.

Still leaked at same spot, so we had to order OEM part.

Like to say very fast delivery package was very well done it fits my 135 mercury very well. Thank you nice job

This part is awefulThe washer inside the cap is too pliable and slips out of the place is supposed to be leading to oil seeping out the top of the cap. Then if you tighten it down as one would do, the cap cracks on the top, and is then worthless. I've bought 3 of these so I guess this is more on me being an idiot then them having a poor quality product. I wont be buying this again, I'll be buying the oem part.And just so we all know, this time I took it to a certified blackmax mechanic who broke the cap after replacing the washer to solve that problem.Spend the extra $30 to get a better quality part!

This oil cap works as described

I ordered this part back in June of 2021 and replaced the original cap off a 1999 Mercury. After that cap failed within two months, I ordered a second unit thinking I may have overtightened the first replacement. I was very diligent in making sure I didn’t over tighten the 2nd replacement. Just took my boat out for the 1st time this year, and I am looking for my 3rd replacement since June of 2021. I will not be using this vendor moving forward. I also couldn’t find warranty information. I definitely trying my luck with the OEM replacement this time.

The cap leaks oil a lot like others reviews warning and i sadly ignored . The problem seems not the gasket but the cap itself don't make a parallel contact whit the reservoir edge. I had to tight very hard the cap to stop the leaking but is not the idea because that is the reason cause these caps ends broken. I will not buy this model again.

Le bouchon d’huile de remplacement est de mauvaise qualité. Nous l’avons acheté en août 2022. Donc à l’automne, avant d’hiverniser le bateau.Il a été vissé qu’une seule fois et maintenant il fuit au mois de juin 2023.