CIS Airbox Pop-Off Valve
One of the best and easiest updates for any 1974-1983 911 with CIS Injection. The pop-off valve will protect your expensive airbox against backfires which is not uncommon.
Note: Installation will require a 2" hole to be made in your airbox. Instructions included. The recommended glue for installation is Loctite Epoxy Mixer Cups #37513
Reference Part Number: 911-110-ABV / 10-0843-000
Manufacturer: URO PARTS
Vehicle Fitment
| Model | Engine | Years | Fuel System | Option | Qty Required | Comments |
| 911T | 2.4 | 1973.5 | FI | 1 | With CIS Injection Only | |
| 911 | 2.7 | 1974-1977 | FI | 1 | With CIS Injection Only | |
| 911 SC | 3.0 | 1978-1983 | FIl | 1 | With CIS Injection Only |