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

Fits

Year	Make	Model
2017-2026	Chevrolet/GMC	Duramax L5P w/ 6.6L

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.
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• 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

Material	6061 Billet Aluminum
Line Fittings	1/4" Quick Connect (DEF / Fuel Line)
Origin	Canada

Click here to view installation instructions

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