What is this sensor called and does it come out?


I have put about 2500 miles on my 2004 XK8 since an engine shampoo and noticed oil seeping around this rubber seal in the valve cover. I cleaned it of but did not want to try and pull on something that should not be pulled on to see if it could cleaned up and stopped from leaking. I wonder also if it might represent a crankcase vent system leak which might account for my occasional P0442 error code. Evaporative Emission Control System Leak Detected (Small Leak)?

Those are the Variable Valve Timing Solenoids (VVT) and they are not removable from the top HOWEVER the seals can be pried up with a screwdriver and ARE replaceable from the top. The part number is: NNE2622BA, about $10 each. Be sure to clean the dirt off the solenoid when replacing to avoid contaminating the seal.

That is not the source of the EVAP leak though.

Thanks, will order today, gotta love this community.

My local Jag Dealer had 2 in stock, picled them up at lunch, only hing here in Canada the parts were $41.42 each. But hey you gotta pay to play right?

Take them back to the dealership and order them online from motorcarsltd.com. I did so in March 2013 and paid about $27 for both, including shipping. Even with shipping to Canada you'll save a bunch of money by going this route....

I believe the proper part number for the 4.2 engine VVT solenoid O-ring seal is AJ82856 so you may want to double-check before you open the package you've already purchased....

My apology...I copied the number of the wrong VVT seal. If the dealer did not correct it, definitely take them back.

motorcarsltd.com shows the NNE2622BA at $3.96 and AJ82856 at $12.94.

Hey Fellas, the AJ82856 says it will not fit 2003 xk8, everywhere I look on the interwebs. Is that right? The NNE2622BA doesn't look like the correct part.

AJ82856 is the correct one for 4.2 engines.

FWIW I used an OEM part when I replaced mine. Saving a few bucks on something that prevents oil leaks is not worth the risk.

The AJ82856 fit my 2003 XK8 Coupe 4.2L and no leaks or problems. easy replacement job. More difficult to remove the plugs off the VVT units than to R&R the seals.

Just make certain that you wipe the area squeaky-clean after removing the failed seals and before installing the new seals. Any trace of old oil or grit can cause your new seals to leak prematurely. These things bake in the engine bay and my experience has been that regardless of where I source them, they turn hard and brittle and begin to show small surface cracks within 2 to 3 years. Sure wish a supplier could offer a set made out of much more durable and pliable material....

Replaced these things. Easy as can be. Cost me about $8 each side. This is the greatest forum EVER!

Glad it worked out well.

FWIW I think its the participants that are great, not the platform. The site itself has been eroding for a while now. All from the desire to be more profitable than helpful.