12mm A-Pump Diesel Fuel Injector Lines for 3.9L 4BT Cummins Engine

• Full Set of New Fuel Rail Injector Lines
• Cylinders, 1,2,3 & 4
• Sold as pictured with line clamps
• Pressure tested to 25000 psi

Fits: 4BT 3.9l Cummins Engines with A-Pump.
*Note: 12mm fittings on each end.
*Note: Will not fit engines with 14mm injectors, 14mm pump outlet, engines with P-pumps, or VE Rotary style pumps.
Tip: 12mm thread injectors use a 17mm wrench for line nut and 14mm thread injectors use a 19mm wrench for line nut.