mine came with a chrome plastic cover although it wasn't the le partie cdi one, mine was a mbk ebay purchase, I think you can buy them separately I have seen the black ones for sale like in the picture attached, maybe ask on here if anyone has one spare or unused as it could be sprayed ect, the original doesn't fit as you will have an extra part blocking it from fitting where it measures the magnet pulse, you may be able to adapt the original to fit although I didn't try to. what I will say though is its so much better with cdi, it is reliable and just "works"