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$1,500.00
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.
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$1,200.00
The Mazda 12A Rotor Housings – Excellent Condition offer rotary enthusiasts, engine builders, and restoration specialists an increasingly rare opportunity to secure genuine 12A rotary engine components in highly desirable condition. Finding quality rotor housings for classic Mazda rotary engines has become significantly more difficult over the years, making clean, usable housings a valuable asset for anyone planning a rebuild, restoration, or performance-oriented rotary project.
These rotor housings have been carefully inspected and present exceptionally well for their age. They show no signs of warpage or shrinking, and there are no cracks around the spark plug holes—two of the most common concerns when sourcing used rotary engine housings. Aside from one very small chrome flake near the exhaust port, the housings remain clean, structurally sound, and fully usable for a wide range of applications.
Whether you’re rebuilding a classic Mazda RX-7, restoring a vintage rotary-powered vehicle, assembling a spare engine, or building a custom performance motor, these Mazda 12A Rotor Housings – Excellent Condition provide a strong foundation for a successful rotary build.
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$1,600.00
When rebuilding a rotary engine, few components are as critical as the rotor housings. These genuine Mazda 12A Turbo Rotor Housings – Brand New offer enthusiasts, builders, and restorers the opportunity to start with fresh OEM-quality components designed specifically for the legendary Mazda 12A turbo rotary platform.
Whether you’re performing a complete engine rebuild, restoring a classic RX-7, or assembling a high-performance rotary engine, brand-new rotor housings provide the foundation needed for optimal compression, sealing, reliability, and long-term durability.
Unlike used housings that may suffer from wear, scoring, corrosion, or heat-related damage, these unused genuine Mazda rotor housings deliver factory-level fitment and performance. They are an excellent choice for anyone who wants to eliminate uncertainty during a rotary engine build and ensure the highest possible standards of engine assembly.
For serious rotary enthusiasts, starting with new OEM rotor housings is one of the best investments you can make in the longevity and performance of your engine.
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$300.00
The Mazda Rotary Porting Plate – 12A / 13B (RX-3, RX-4, RX-7 SA22C) is a highly sought-after performance component designed for rotary enthusiasts looking to maximize airflow and unlock additional performance from their engine build. Whether you’re rebuilding a classic Mazda rotary engine, performing a bridge port conversion, or planning a full peripheral port race engine, a quality porting plate is an essential part of the process.
Designed for compatibility with Mazda’s legendary 12A and 13B rotary engines, this porting plate is suitable for a wide range of classic applications, including the Mazda RX-3, RX-4, and first-generation RX-7 SA22C. Built to OEM standards and engineered to withstand the demands of high-performance rotary engines, this component provides the foundation for increased airflow, improved engine breathing, and enhanced power potential.
For rotary enthusiasts, airflow is everything. The Mazda Rotary Porting Plate helps optimize intake flow characteristics while supporting a variety of porting strategies, making it an excellent choice for both street-driven and track-focused builds.
