GM Injector Line, Cylinder 1 or 8, Duramax LML | 2011 - 2016

The injector line, GM part number 12670468, is the high-pressure steel line that carries fuel from the fuel rail to the injector for cylinder 1 or cylinder 8 on 2011-2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L LML Duramax. Injector lines seal metal-to-metal at extremely high rail pressure, and their seats deform once they are torqued. Any line that has been removed should be replaced rather than reused. A leaking or damaged line causes misfires, a fuel smell, low rail pressure codes and fuel in the valley. The line is sold individually, so order two to cover both cylinder 1 and cylinder 8. It replaces GM 98063063.

Key Features

• GM part number 12670468
• Replaces GM 98063063
• Fits cylinder 1 or cylinder 8
• Steel line, 0.25 in (6.35 mm) outside diameter, 3 mm inside diameter
• Factory bends and sealing ends, rated for full LML rail pressure
• Sold individually, 2 needed for both cylinders

Benefits

A new factory line gives a fresh metal-to-metal seal at the rail and the injector, which stops leaks and restores full injection pressure. Replacing the lines during an injector job also protects your new injectors, since old lines can hold rust and debris that pit and plug injectors. The other LML lines are the Cylinder 2 or 7 Injector Line, the Cylinder 3 or 6 Injector Line and the Cylinder 4 or 5 Injector Line. To replace all eight at once, see our Merchant Automotive Fuel Injector Line Kit.

Fitment

Fits 2011-2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD with the 6.6L LML Duramax diesel. Position: cylinder 1 or cylinder 8.

What's Included

• (1) GM high-pressure injector line, cylinder 1 or 8, 12670468