Mishimoto Intercooler Kit 17-19 GM L5P Duramax Silver WBK

Mishimoto intercooler kit for 2017–2019 GM L5P Duramax (Silver WBK) delivers targeted charge-air cooling that improves performance consistency and supports long-term reliability under heavy payload use.

This kit is designed by Mishimoto engineers to address known limitations of factory systems on the 6.6L Duramax L5P. Built around the brand's engineering approach, the kit focuses on measurable performance and dependable operation during high-demand duty cycles.

Functional benefits

• Optimized charge-air management: Reduces intake-air temperature variance to help maintain consistent engine response and reduce thermal stress on downstream components.
• Durable construction: Engineered for long service life in demanding work environments, supporting vehicles that handle heavy payloads and extended duty cycles.
• Application-specific design: Tailored to the 2017–2019 GM L5P Duramax to ensure packaging, fit, and flow characteristics suit the platform without unnecessary modification.

Why it matters

Lower and more consistent intake temperatures contribute to predictable turbo operation, improved combustion stability, and reduced risk of heat-related performance degradation. Durable components reduce the likelihood of service interruptions in fleet or work-truck applications.

Mishimoto applies motorsports-grade engineering principles to provide a pragmatic upgrade that targets thermal efficiency and on-road reliability rather than untested gimmicks.

Compatibility note

Designed for use on 2017–2019 6.6L Duramax L5P-equipped GM trucks; intended as a direct-fit, vehicle-specific upgrade when selected for the correct model year and engine.