DeatschWerks 7-702 High Flow Fuel Rails for 86-91 Mazda RX-7 FC Turbo

Vehicle Fitment

• 1986-1991 Mazda RX-7 (FC, Turbo II, 13B Rotary Engine)

Fitment Notes

• Designed exclusively for FC chassis rotary fuel systems
• Not compatible with FB or FD RX-7 platforms
• Requires proper fuel system tuning for modified or boosted applications

Features

• High-flow billet aluminum fuel rail construction
• Larger internal passages for improved fuel delivery
• Direct bolt-on replacement using factory mounting points
• Precision-machined injector bores for improved sealing
• Supports high-horsepower naturally aspirated and turbo builds
• Black anodized finish for corrosion resistance and durability
• Optimized fuel distribution across all injectors
• Compatible with OEM and aftermarket injector setups

Specifications

• Part Number: 7-702
• Material: Billet Aluminum
• Finish: Black Anodized
• Engine: Mazda 13B Rotary
• Platform: FC Chassis RX-7
• Fuel System Type: High-flow performance upgrade
• Mounting: OEM-style direct fit

Included Components

• 1x DeatschWerks High-Flow Fuel Rail Set (Left & Right)
• 1x Mounting hardware kit
• 1x Injector O-ring/seal kit
• 1x Installation instruction sheet

Product Description

The DeatschWerks 7-702 High-Flow Fuel Rail system is engineered to upgrade the factory fuel delivery system on the 1986-1991 Mazda RX-7 FC Turbo II. Designed for the 13B rotary engine platform, it improves fuel distribution and stability under high-demand driving conditions, making it ideal for performance builds and modified turbo setups.

Constructed from precision-machined billet aluminum, this fuel rail system increases internal flow capacity while maintaining OEM-style fitment. The design ensures consistent injector fueling across all cylinders, reducing the risk of fuel starvation at higher horsepower levels. Its anodized finish also provides long-term resistance against corrosion and fuel exposure.

This upgrade is intended for enthusiasts looking to support increased power output while maintaining reliability. Whether used in spirited street driving or track-focused builds, the 7-702 fuel rail kit delivers improved fueling efficiency, cleaner injector operation, and dependable performance under boost conditions.