Cusco Oil Catch Tank

1986–1992 Mazda RX-7 13B Turbo / NA

Part #: 420 009 A

Overview

The Cusco Oil Catch Tank is an essential upgrade for Mazda RX-7 enthusiasts seeking to optimize engine performance and maintain engine health. Designed specifically for the iconic FC3S chassis from 1986 to 1992, this oil catch tank effectively traps harmful blow-by gases and oil vapors that can otherwise contaminate your intake system and reduce engine efficiency. Whether you're a daily driver, a spirited street enthusiast, or a dedicated tuner, this catch tank helps keep your engine bay cleaner and your engine running smoothly.

By installing the Cusco Oil Catch Tank, you’ll help prevent oil and gasoline vapors from re-entering the intake manifold, which can lead to carbon buildup, fouled spark plugs, and decreased performance over time. This product is ideal for those who want to preserve engine longevity, improve throttle response, and support consistent horsepower output. Its compact and durable design makes it a perfect addition to your RX-7’s engine bay without sacrificing space or aesthetics.

Key Features

The Cusco Oil Catch Tank is engineered with high-quality materials and precision craftsmanship to ensure reliable performance and durability. Key features include:

• Constructed from lightweight, corrosion-resistant aluminum that withstands engine heat and harsh conditions.
• Compact, sleek design that fits seamlessly into the Mazda RX-7 FC3S engine bay without obstructing other components.
• Easy bolt-on installation using existing mounting points, requiring no modifications or additional hardware.
• Effective separation of oil vapors and blow-by gases, reducing oil consumption and preventing oil from entering the intake system.
• Reinforced internal baffles to maximize separation efficiency and minimize oil carryover.
• Clear, visible catch can chamber for easy inspection and maintenance.
• Designed to work with the factory PCV system, ensuring proper ventilation and emissions compliance.

Construction & Design

The Cusco Oil Catch Tank features a robust aluminum construction that offers excellent heat dissipation and corrosion resistance. Its precision-machined components and TIG-welded seams ensure a leak-free, durable unit capable of withstanding the rigors of high-performance driving. The internal baffling system is carefully designed to maximize oil separation while maintaining minimal pressure drop, helping your engine breathe freely and efficiently. Its compact profile allows for flexible mounting options within the tight confines of the Mazda RX-7 engine bay, making it a practical yet high-quality upgrade for enthusiasts who demand reliability and performance.

Performance & Sound

While the primary benefit of the Cusco Oil Catch Tank is maintaining engine cleanliness and performance, it also contributes to smoother operation by preventing oil vapors from contaminating the intake. This can lead to more consistent combustion, improved throttle response, and potentially increased horsepower over time. Although it does not directly increase power figures, its role in preserving engine health makes it a valuable component for both daily drivers and performance builds.

Installation & Fitment

The Cusco Oil Catch Tank is designed for a straightforward, bolt-on installation. It mounts directly to the factory PCV system and existing brackets within the Mazda RX-7 FC3S engine bay. No cutting, drilling, or complex modifications are required, making it accessible for DIY enthusiasts and professional installers alike. The installation process typically involves removing the factory crankcase vent hose, attaching the catch can using supplied fittings, and securing it in place with existing mounting points. Regular inspection and maintenance of the catch can are recommended to ensure optimal performance and longevity.

• Easy bolt-on installation with no modifications needed
• Compatible with factory PCV system
• Requires minimal maintenance—simply empty the chamber when full

What's Included

• Cusco Oil Catch Tank
• Mounting hardware and brackets
• Hose fittings and clamps
• Installation instructions

Ideal For

• Mazda RX-7 FC3S owners looking to improve engine longevity and performance
• Enthusiasts seeking to reduce oil vapors and prevent carbon buildup
• Performance tuners and street drivers aiming for cleaner engine operation
• Anyone wanting a durable, high-quality oil catch tank that fits seamlessly into the engine bay

Emissions Note

This Cusco Oil Catch Tank is designed to work with the factory emissions system and complies with applicable standards for street use. It helps support proper crankcase ventilation and reduces emissions of harmful vapors, contributing to a cleaner environment and a healthier engine.