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Upgrade your valve springs with these performance springs that are designed and manufactured using the Highest Quality Grade Wire
9L Brand New Injector Set 180HP 60% Over (DDPN305-180)
Must use high-strength studs to achieve proper clamp load
PPE has taken OEM replacement to a new level
7L 4" Cat & DPF Race Pipe w/ Muffler (421032)
2001-2004 Duramax LB7 Injection Line (AP63723) 2005 - 2006 GM Turbochargers Upgrade your valve springs with2001 2004 GM Injection Line AP63723 The LB7 Duramax's are notorious for injector failure due to a design flaw of the original injectors. Further, it was very common that when these injectors failed, failure would soon occur immediately after, and it was determined that it was due to corrosion build up in the injector lines that simply needed to be replaced ANYTIME the injectors are replaced. This injector line is a direct replacement and will fit