DIESELR High Flow Y-Bridge (2017-2024 Duramax 6.6L L5P)

If you're chasing horsepower in your 2017–2024 Duramax 6.6L L5P, the factory Y-bridge is holding you back. This 3.5" High-Flow Y-Bridge from Dieselr replaces that restrictive factory bottleneck with a wide-open, direct-flow path to your intake runners—perfect for high-horsepower, race-tuned applications.

Whether you’re feeding a bigger turbo or running aggressive fueling, this is the Y-bridge serious Duramax builders rely on.

Race-Grade Construction That Doesn’t Back Down

• 3.5” Inlet: Bead-rolled to hold tight under high boost
• TIG-Welded 304 Stainless Steel: Built to take heat and pressure
• Polished Finish: Clean look out of the box, or ready for paint
• Sensor Ports Included: MAP sensor + 1/8" NPT accessory ready

This isn’t a shiny showpiece—it’s a workhorse part built to perform in the real world.

Direct Fit. Custom System Ready.

The Dieselr Y-Bridge bolts straight to your factory intake runners with OEM hardware and seals. It’s made for builders running custom intake setups, fabricated piping, or upgraded turbos—not for stock trucks.

Note: Not compatible with OEM turbo or factory intercooler piping.

What You Get

• (1) High-Flow 3.5” Y-Bridge Assembly – TIG-Welded 304 Stainless (Polished)

For Race Use Only

This part is intended for custom, off-road racing applications only. Custom fabrication is required to complete installation. You’re not buying a plug-and-play kit—you’re buying the best foundation for serious airflow.

Why Dieselr?

Because while others resell this part, we're the source.

• Trusted by shops, tuners, and platforms that sell under other names
• Fast shipping from warehouses across North America
• Real human support from mechanics and tuners who actually build these setups

If you’re done chasing power with factory junk, this is where your airflow starts.