2017-2019 Duramax 3" High Flow Intake Y-Bridge Double Rainbow (L5P-INT-A024)

Fits

Year	Make	Model
2017-2019	Chevrolet/GMC	Duramax L5P w/ 6.6L

Note: Required custom tuning. For Off-Road and Competition Use Only.

Select custom colors are not regularly stocked; please allow an ETA of 2-3 weeks for coating.

The Dirty Diesel Customs 3" High Flow Intake Y-Bridge, famously known as the "Double Rainbow," is engineered to maximize airflow and performance on your 2017–2019 Duramax. Precision-machined with a 3" to 2.5" billet Y and 2.5" tubing runners, it delivers a significantly smoother and more efficient intake charge to your truck.

We recently re-engineered the Double Rainbow to provide even cleaner flow by reducing total welds and refining the flange transitions for seamless air transition. The updated design features an improved MAP sensor fitment and a sleeker billet finish. This bridge is fully compatible with OEM components and most aftermarket piping kits, connecting directly to your factory intercooler piping or throttle valve.

Click here to view the matching L5P Intake Horn.

Part Number: L5P-INT-A024

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.

• Precision CNC-machined 3" to 2.5" billet Y-section for optimized air distribution and velocity.
• Mandrel-bent 2.5" runners provide a smooth, unrestricted path for high-volume intake flow.
• Refined flange transitions and reduced weld count minimize internal turbulence.
• Updated MAP sensor fitment ensures accurate data readings and a secure, leak-free seal.
• Pairs perfectly with our L5P High Flow Intake Horn for a complete intake system overhaul.

• (1) Dirty "Double Rainbow" 3" Billet Y-Bridge
• All required gaskets and mounting hardware

Inlet Diameter	3" Billet
Runner Diameter	2.5"
Finish	Powder Coated (Various Colors)
Origin	Canada

Click here to view installation instructions

 

We overengineer everything we make. It's manufactured to last and tested to prove it, and if by some strange anomaly it ever lets you down, we'll fix it, have a word with whoever built it, and come back stronger. That's the Dirty Lifetime Warranty. Click here for all the details.