Description
2017 – 2023 6.6L Duramax L5P Driver (Left) Side Fuel Rail Assembly with Regulator
This Duramax fuel rail is designed for reliable fuel delivery and consistent performance in 2017–2023 L5P applications. Built as a direct replacement, part number 12686810 includes the integrated regulator for proper fuel pressure control. Support proper fuel pressure and engine performance with this L5P fuel rail assembly for sale.
OEM # 12686810 / 2439
Direct replacement left side Fuel Rail Assembly. Includes the Fuel Pressure Regulator which is not sold separately by GM.