Servicing the IPR that is located on the back of the High Pressure Oil Pump can be a dirty job. As soon as you pull the IPR, oil begins to drain from the reservoir and pump, filling your engine valley with oil.
Here is a plug that will make the job cleaner and easier with little or no cleanup afterwards. This plug will tightly seal the IPR opening with no additional loss of oil into the engine valley. Simply push it in and pull it back out when you are ready to re-install the IPR after servicing it.