The 20B Side Housing – Peripheral Port is a premium genuine Mazda component designed for serious rotary enthusiasts building high-performance 3-rotor engines. Whether you’re assembling a turbocharged street monster, a dedicated drag car, or an all-out race build, this peripheral port side housing provides the airflow potential and reliability needed to support substantial horsepower goals.
As one of the most sought-after components in the rotary performance world, a genuine Mazda 20B side housing is a critical foundation for any serious triple-rotor engine project. Designed specifically for peripheral port (PP) configurations, this housing helps maximize airflow into the engine, supporting the high-RPM characteristics and power output that have made the 20B legendary among rotary enthusiasts.
Originally found in the iconic Mazda Eunos Cosmo, the 20B remains one of the most respected rotary engines ever produced. Builders pursuing big horsepower numbers understand the importance of using quality OEM components during assembly, and this 20B Side Housing – Peripheral Port is an excellent choice for maintaining reliability while unlocking maximum performance potential.
Clean, ready for assembly, and suitable for a variety of custom builds, this component is ideal for performance engine rebuilds, race applications, and custom rotary conversions.
If you’re searching for the ultimate street-ready rotary engine, this 20B with a Borg Warner 300SX-E turbo, ZF 8HP trans, and Link FuryX ECU/Razor PDM in control is built to exceed expectations. Combining legendary Mazda rotary engineering with modern electronics and premium performance components, this complete package delivers exceptional power, reliability, and drivability.
Designed for enthusiasts who demand more than just horsepower, this professionally assembled 20B street engine incorporates proven CNC machining, upgraded internals, advanced engine management, and one of the industry’s most respected turbocharger combinations. Whether you’re building a high-performance RX-7, RX-8, custom drift car, or a one-of-a-kind street machine, this setup provides the ideal foundation.
Every component has been selected with performance, longevity, and ease of tuning in mind, making it suitable for serious street use while remaining capable of supporting demanding motorsport applications.
The Mazda 20B 3-Rotor Engine – Clean Build is one of the most iconic and desirable rotary engines ever produced, offering a rare combination of smooth power delivery, high-revving performance, and unmistakable Mazda engineering heritage.
This engine is built around the legendary 20B triple-rotor platform—widely respected in the rotary community for its strength, tuning potential, and unique driving character. Unlike standard 13B engines, the 20B delivers more displacement, more torque, and a noticeably stronger mid-range, making it a favorite for serious performance builds.
This Mazda 20B 3-Rotor Engine – Clean Build comes as a professionally refreshed unit with multiple new internal components, making it a strong foundation for high-performance applications, RX-7 swaps, drift builds, or collector-grade projects.
Whether you’re a rotary enthusiast chasing big horsepower or a builder looking for something truly rare, this engine stands out as a premium, hard-to-find option in today’s JDM market.
