Depending on your year of jeep 4.0, you may or may not have a regulator built into the rails with "in and out quick connect fittings". This aluminum rail has one "in" provision. If yours has "2" then see below.
Billet Aluminum Fuel Rail FIT 1997-2001 Jeep Wrangler TJ Cherokee XJ 4.0L 98 99
Billet Aluminum Fuel Rail For 1997~01 Jeep Wrangler TJ Cherokee XJ 4.0L RED NEW
Mk1 Golf Billet Aluminium Fuel Cap
Billet Fuel Rail Kit Replacement For LS1 LS6 High Flow Fuel Rails Kit 8AN Port
Black Billet High Flow Fuel Rail Gauge For Honda K20 K24 K Series K-TUNED style
Billet Aluminum EFI Fuel Rail For Mazda RX-7 Rotary Series 4 ,5 13B Engine 86-91
