Description
Mishimoto Hot Side Pipe Boot Kit for 2017–2019 GM 6.6L L5P improves power and efficiency by addressing the factory hot-side restriction, delivering a more direct path for charged air and helping the turbo system work more effectively.
This kit replaces the stock hot-side intercooler plumbing. The stock component is a 2.5in pipe with tight bends and an integrated resonator that adds flow resistance; replacing this section reduces that restriction and supports more consistent boost delivery and throttle response.
- Factory 2.5in hot-side pipe — The undersized 2.5in diameter acts as a choke point; identifying this as the limiting component explains why replacing the pipe is necessary to reduce pressure drop.
- Tight bends in stock plumbing — Abrupt bends increase turbulence and pressure losses; a straighter, purpose-built path reduces those losses for smoother charged-air flow.
- Built-in resonator on factory pipe — The OEM resonator creates additional restriction in the hot-side path; removing or redesigning this element lowers backpressure and helps maintain turbo efficiency.
- Mishimoto engineering and validation — Mishimoto’s reputation for robust cooling and forced-induction components means the kit is developed with application-specific considerations for the L5P platform.
Key benefits
- Reduced hot-side restriction for improved turbo efficiency and more consistent boost
- Improved airflow path compared to the stock 2.5in pipe and tight-bend routing
- Design intent focused on reliability and real-world performance for the 6.6L Duramax L5P
Use cases and compatibility notes
- Intended for 2017–2019 Chevrolet and GMC vehicles equipped with the 6.6L Duramax L5P engine
- Suitable as part of a turbo upgrade or high-flow intake/intercooler system where reducing hot-side pressure drop is a priority
Materials and finish
Polished finish for corrosion resistance and ease of inspection. The kit is designed to integrate with the existing intercooler plumbing on L5P applications.
Installation
- Designed to replace the factory hot-side intercooler pipe and boots; professional or experienced DIY installation recommended to ensure secure clamps and leak-free joints.
Brand: Mishimoto
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | GMC | Sierra 2500 HD | Base |
| 2017-2019 | GMC | Sierra 2500 HD | Denali |
| 2017-2019 | GMC | Sierra 2500 HD | SLE |
| 2017-2019 | GMC | Sierra 2500 HD | SLT |
| 2017-2019 | GMC | Sierra 3500 HD | Base |
| 2017-2019 | GMC | Sierra 3500 HD | Denali |
| 2017-2019 | GMC | Sierra 3500 HD | SLE |
| 2017-2019 | GMC | Sierra 3500 HD | SLT |
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