Speedmaster Mazda RX7 Rotary 13B Semi-Polished Port Intake Manifold for FD & Cosmo

The Speedmaster Mazda RX7 Rotary 13B Semi-Polished Port Intake Manifold (PCE147.1131) is a precision-engineered intake component designed for Mazda FD and Cosmo rotary engine builds. This semi-polished port manifold optimizes air and fuel mixture delivery to the rotary combustion chamber, supporting engine efficiency and performance gains in modified and stock-displacement applications.

Specifically engineered for the 13B rotary platform, this manifold fits FD RX7 (1992–2002) and compatible Cosmo rotary vehicles. The semi-polished port design balances flow characteristics and manufacturing durability, making it suitable for bolt-on upgrades, street performance builds, and prepared-engine projects. Installation requires standard engine bay fitment and fuel system tuning to maximize benefit.

Key Features & Benefits

• 13B Rotary Specific: Engineered exclusively for Mazda 13B rotary engines in FD RX7 and Cosmo applications.
• Semi-Polished Port Design: Optimized internal port surfaces reduce turbulence and improve intake charge flow.
• FD & Cosmo Compatible: Direct fitment for 1992–2002 FD RX7 and compatible Cosmo rotary models.
• Performance-Oriented: Supports engine efficiency gains and complements modified fuel and ignition tuning.
• Precision Construction: Manufactured to close tolerances for reliable bolt-on integration.

Specifications

Ideal Applications

• Street and road performance builds on FD RX7 models
• Modified rotary engine projects with upgraded fuel and ignition systems
• Cosmo rotary engine upgrades and restorations
• Bolt-on performance component for 13B rotary swaps