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SKU: 7-702 | UPC: 887753546593
DeatschWerks High-Flow Fuel Rails – 1986-1991 Mazda RX-7 FC Turbo II (13B)
The DeatschWerks High-Flow Fuel Rails are a premium direct-replacement upgrade for the factory fuel rails on the 1986-1991 Mazda RX-7 FC Turbo II equipped with the 13B rotary engine. These billet aluminum rails are engineered to support significantly higher horsepower levels by providing increased fuel flow and better distribution to the injectors.
Featuring larger internal passages and precision-machined injector seats, they ensure optimal performance and consistent fuel delivery under high-demand conditions. The rails maintain factory mounting points for a true bolt-on installation while offering improved injector clamping and sealing. The durable black anodized finish adds a clean, professional look under the hood. Ideal for naturally aspirated, turbocharged, or heavily modified 13B rotary builds, these fuel rails deliver the reliability and flow capacity DeatschWerks is known for.
Key Features
- High-Flow Design – Larger internal passages for superior fuel delivery and high-horsepower support
- Billet Aluminum Construction – Lightweight, strong, and precision-machined for perfect fitment
- Black Anodized Finish – Attractive, corrosion-resistant appearance
- Direct Bolt-On – Retains factory mounting locations and injector spacing
- Improved Injector Clamping – Better sealing and stability at high fuel pressures
| Spec | Detail |
|---|---|
| Part Number | 7-702 |
| Brand | DeatschWerks |
| Type | High-Flow Fuel Rails |
| Compatibility | 1986-1991 Mazda RX-7 FC Turbo II (13B Rotary) |
| Material | Billet Aluminum with Black Anodized Finish |
| Country of Origin | United States |
| Warranty | DeatschWerks Limited Warranty |
Whats Included
- Pair of DeatschWerks High-Flow Fuel Rails (Left & Right)
- Mounting hardware and O-rings
- Installation instructions
Product Notes
- Designed specifically for the 1986-1991 Mazda RX-7 FC Turbo II with the 13B rotary engine
- Supports significantly higher horsepower than factory rails
- Professional installation recommended with proper fuel system pressure testing
Installation Notes
- Direct replacement for factory fuel rails
- Estimated time: 1–2 hours
- Requires fuel system depressurization and proper torque specifications
This Part Fits
| Year Range | Make | Model | Trim / Engine | Notes |
|---|---|---|---|---|
| 1986-1991 | Mazda | RX-7 | FC Turbo II (13B Rotary) | High-Flow Fuel Rails |
Why Choose DeatschWerks Fuel Rails?
- Precision-machined billet aluminum for maximum flow and durability
- Supports high-horsepower rotary builds with consistent fuel delivery
- Trusted by enthusiasts and professional builders for quality and performance
Frequently Asked Questions
-
Q: Will these fuel rails fit my 1988 Mazda RX-7 Turbo II?
A: Yes, they are designed specifically for the 1986-1991 Mazda RX-7 FC Turbo II with the 13B rotary engine. -
Q: Do they support high horsepower?
A: Yes, significantly higher flow capacity than factory rails for boosted or heavily modified 13B rotary engines. -
Q: Is professional installation recommended?
A: Yes, proper installation includes fuel system depressurization and pressure testing.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure DeatschWerks retail packaging
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