The OEM design is held in place with a standard plastic locking clip. We also offer a special design with a thread on locking clip. Both of these adapters use an internal dual o-ring seal to ensure connections are leak free even under high pressures. We have used the 1/4" adapter on RSX and 8th Gen Civic fuel feed (firewall) hardlines and the 5/16" adapter fits all of the stock EFI K-Series fuel rails we have seen so far.
- If you want to measure and confirm what size EFI fitting you have, simply check the line thickness with a 1/4", 5/8 or 5/16" wrench.
- 01-15 Civic Firewall (All models)
- RSX Firewall
- 1996-00 Civic Sending Unit
- K-Series Car Fuel Rail (01-15 Civic / 02-06 RSX / 04-12 TSX)
- 8th Gen Civic SI Sending Unit
- RSX Sending Unit
- Flex Fuel Sensor