Specifications
The Mazda 13B engine is a 1.3-liter (1,308 cc) twin-rotor Wankel Rotary Engine known for its compact size, high-revving nature, and smooth power delivery. It uses two rotors, each displacing 654 cc, with a lightweight aluminum housing and typically features DOHC peripheral or side intake ports, depending on the variant. Naturally aspirated versions produce roughly 130–200 hp, while turbocharged versions (such as the 13B-REW) can generate 255–280 hp or more, with redlines commonly around 7,000–8,500 rpm. The engine is liquid-cooled, fuel-injected, and renowned for its excellent power-to-weight ratio, though it is also known for higher fuel consumption and oil usage compared to piston engines.
Engine Variants
13B-AP (Anti-Pollution)
The 13B-AP was Mazda’s first high-performance 13B rotary, developed in the early 1970s with a strong focus on meeting emerging emissions regulations. Used in models like the Luce, Cosmo, and RX-4, it combined solid power output with improved exhaust control systems, helping establish the 13B as a reliable and versatile rotary engine for both performance and everyday use.
13B-RESI (Rotary Engine Super Injection)
Introduced in the mid-1980s, the 13B-RESI marked a major technological step forward with the adoption of electronic fuel injection. Featured in the 1984–85 RX-7 GSL-SE and contemporary Luce and Cosmo models, it delivered smoother throttle response, improved fuel efficiency, and better emissions control compared to carbureted rotary engines.
13B-DEI
The 13B-DEI powered the Series 4 and Series 5 FC RX-7, offering further refinements in fuel injection, intake design, and overall reliability. This version balanced performance and drivability, providing strong mid-range power while maintaining the high-revving character that made the RX-7 popular among enthusiasts.
13B-T (Turbocharged)
The 13B-T introduced forced induction to the 13B lineup, significantly increasing power and torque. Used in the Japanese-market Luce Turbo and select FC RX-7 models, it showcased the rotary engine’s ability to handle turbocharging, paving the way for later high-performance variants like the legendary twin-turbo 13B-REW.
Frequently Asked Questions
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Is the Mazda 13B compatible with both RX-7 and RX-8 models?
Yes, the Mazda 13B Engine is compatible with both RX-7 and RX-8 models, though some versions may require specific mounts or ECU tuning adjustments for proper fitment.
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Are your Mazda 13B tested before shipping?
Absolutely. Every used Mazda 13B Engine at Tagore Auto Parts is compression-tested and inspected for quality to ensure it meets OEM performance standards
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Does the Mazda 13B come with a warranty?
Yes, all our Mazda 13B Engines include a standard limited warranty for customer peace of mind. Extended warranty options are also available upon request.
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Can I use the Mazda 13B Engine for a performance swap?
Definitely. The 13B Engine is a popular choice for performance swaps, offering a lightweight rotary design and high-revving capability — ideal for custom builds and track cars.
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What transmissions work best with the Mazda 13B Engine?
For optimal performance, pair your Mazda 13B Engine with a Tremec Transmission or Aisin Transmission — both known for durability and smooth rotary power delivery.
Mazda 13B Engine