About this product
HSP Max Flow Bridge / Cold Side Tube / Turbo Inlet for 2011-2016 Chevrolet / GMC Duramax LML
Part Number: 504-HSP
The 504-HSP Bundle combines the HSP Max Flow Bridge, Cold Side Tube, and Turbo Inlet for 2011-2016 LML Duramax-equipped Chevrolet and GMC trucks. This all-in-one package increases airflow, efficiency, and throttle response — a must-have for serious LML owners.
Max Flow Bridge Benefits
Port-matched to the intake runners, the Max Flow Bridge improves airflow and efficiency. Its precision build ensures durability and optimized engine performance.
Cold Side Tube Advantages
Replaces restrictive, failure-prone factory cold-side pipes with a mandrel-bent aluminum tube, offering smoother airflow, improved boost handling, and enhanced reliability.
Intake Mouthpiece Features
Hand-fabricated VGT Intake Mouthpiece improves airflow transition, completes the system, and offers optional powder coat finishes for a polished engine bay.
Whats Included
- 1x Bridge (HSP-IN-223)
- 1x Coldside (HSP-IN-228)
- 1x Fabricated Turbo Inlet (HSP-IN-216-2)
- 1x 1/8'' NPT Brass Plug (RFB-811-RFAB)
- 1x M6x1.0x16mm Flange Bolt (RFB-893-RFAB)
- 1x Duramax Pre-Made Hose - Rubber (RFB-398-RFAB)
- 1x 5/8" Worm Gear Clamp (RFB-403-RFAB)
- 1x 1/2" Worm Gear Clamp (RFB-405-RFAB)
- 60x 5/8" PCV Hose (RFB-407-RFAB)
- 4x 3" T-Bolt Clamp (RFB-422-RFAB)
- 2x 3"x4" Straight Boot (RFB-430-RFAB)
- 1x 3/4" to 5/8" Heater Hose Connector (RFB-462-RFAB)
- 1x 3/8" Coolant Plug - Aluminum (RFB-808-RFAB)
- 1x Rear Cover Coolant Fitting (RFB-809-RFAB)
- 1x Coolant Plug O-Ring (RFB-813-RFAB)
- 2x M6x1.0x25mm Flange Bolt (RFB-896-RFAB)
- 4x M6x1.0x20mm Flange Bolt (RFB-897-RFAB)
Fitment
LML: 2011-2016 (VIN Code 8)
Note: Engine code is dictated by the 8th character of the VIN. The 10th character identifies the model year.
Overview
- Increased performance and turbo spool-up
- Optional powder coat finishes for engine bay styling
- Upgraded high-strength silicone boots
- Sleek mandrel-bent aluminum tubes replacing factory plastic
- 3.5" to 4" transition for optimal flow
Warranty
HSP NO BS LIMITED LIFETIME WARRANTY
All products are backed by HSP’s hassle-free No BS Lifetime Warranty, ensuring durability and customer satisfaction.
Description supplied by WWM Performance through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
