Mishimoto Oil Catch Can Baffled LimeRock 15-20 BMW M3 M4

The Mishimoto Oil Catch Can Baffled LimeRock 15-20 BMW M3 M4 captures crankcase blow-by to protect the intake tract and support long-term engine reliability on S55-powered 2015–2020 BMW M3 and M4 models.

This is a purpose-built, baffled oil catch can kit from Mishimoto designed for the compact M cars introduced with the S55 turbocharged engine. The baffled internal design separates oil and vapor from the PCV plumbing, reducing the amount of oil that can reach the intake and turbo systems — a direct response to the blow-by behavior noted on these engines.

• Baffled design — provides staged separation of condensates and oil vapor to limit re-ingestion into the intake.
• Vehicle-specific application — engineered for the S55-equipped 2015–2020 BMW M3 and M4 for straightforward integration with the factory PCV routing.
• LimeRock edition — identifiable finish and branding to match performance-oriented build themes.

Why this matters: controlling oil vapor and condensates in the intake and turbo inlet reduces carbon buildup, helps maintain throttle and intercooler cleanliness, and lowers the volume of oil passing through the turbochargers and intake tract — all factors that contribute to consistent performance and easier long-term maintenance.

Mishimoto pedigree: Mishimoto is the manufacturer of this kit, reflecting the brand’s focus on thermal and engine management components for performance vehicles. The kit is presented as a direct-fit solution for owners seeking an OEM-integrated catch can specifically for the S55 platform.

Installation and integration

Designed as a kit for the factory PCV system on the 2015–2020 M3/M4, the catch can installs inline with existing hoses to intercept crankcase vapors. The baffled internals enable passive operation without added electronics.

What’s included

No additional contents were provided with this listing.