Boost MonkeyCHARGE PIPE Replacement O-ring for BMW N54 N55 335i Z4 535i 535xi 335xi 335is 135i CP

I installed charge pipe on my n54 and it kept getting lose, I bought the OEM O ring it also didn’t work. But after I installed boost monkey O ring it kept sturdy not moving around and it got rid of the boost leak.Recommend it

I have a 2011 e90 335i with an N55. This fit the throttle body -> charge pipe perfectly.It's a little expensive for what it is, but it's properly labeled with fast shipping.If your car sounds like it's got a supercharger and it doesn't, you might have a charge pipe boost leak.It's mega easy to install, just take off your intake and charge pipe. This goes there.

i was scared it wouldn’t fit but it ended up being perfect thank goodness for these guys i love that it’s thicker than oem makes it feel more stable and safe

Only lasted about a year but for the price it was well worth it I'm on my second one and it holds Boost very well

This Oring is slightly smaller than oem. It would work if you can carefully put the charge pipe on straight. OEM fits better

Definitely overpriced but I needed it quick. Did the job better much than the factory o-ring.. I had a rough time getting my throttle body attached to my new VRSF chargepipe, but when I use this, worked flawlessly.

Undersized in both radius and thickness; does not fit N54 Charge pipe. Gasket broke in 2 days & was sucked into throttle-body. Luckily the throttle body caught it before it caused catastrophic engine damage. No problems with seller, seller was quick shipping. Product is issue. I took this picture after removing charge pipe after reduced power mode; ecu codes 2CEC, 2CED, 2D09, 2DC5.

Great fit! installed it on a aftermarket charge pipe for a bmw f15