2017+ L5P Duramax 9th Injector Plug (L5P-EXH-A231)

Machined in Canada from 6061 billet aluminum, our DEF injector plug is the proper fix for your 9th injector port once you've moved to a high-flowing, non-DPF/SCR exhaust. Delete the factory DEF system and that injector bung is left wide open in the pipe, where it'll foul, weep, or throw a code on you at the worst possible time. Our plug seals it up clean, the 1/4" quick connect plugs cap off the DEF lines, and your build stays leak-free and trouble-free.

Part Number: L5P-EXH-A231

Why Shop Dirty?

• Canadian-Made Performance: High-performing parts made in-house in our shop in West Kelowna and sourced from across North America with the highest quality standards
• Born in the Shop: Our parts are engineered with real-world experience. Whether it's an OEM fix or a performance upgrade, we build what we know works. We make our parts to solve real-world problems.
• Dirty Made Quality: Our kits are trusted by shops across Canada because we design with the end user in mind. We aren't just designing the kits; we are installing them every day in our own shop. We use our own products every day. From the first weld to the last bolt, we build tough gear that actually fits, handles abuse, and looks the part.

• CNC machined in Canada from 6061 billet aluminum.
• Seals the 9th injector port left open when the factory DEF system comes out.
• Includes 1/4" DEF line quick connect plugs to cap off the lines.
• Sized for 2017 and newer L5P Duramax running a non-DPF/SCR exhaust.

• (2) DEF Injector Coolant Line Plug
• (1) 1/4" DEF Line Quick Connect Plug
• All Required Hardware

Click here to view installation instructions