SKU: DWK7-704 | UPC: 887753546609
DeatschWerks High-Flow Fuel Rail – 1994-2005 Mazda Miata 1.8L (NA/NB)
The DeatschWerks High-Flow Fuel Rail is a premium direct-replacement upgrade for the factory fuel rail on the 1994-2005 Mazda Miata (NA and NB chassis) equipped with the 1.8L inline-four engine. This billet aluminum fuel rail features larger internal passages for improved fuel flow and better distribution to the injectors, making it an excellent choice for naturally aspirated performance builds, supercharged, or turbocharged Miata engines pushing beyond stock power levels.
Precision-machined injector seats ensure optimal performance and reliable sealing at higher fuel pressures. The durable black anodized finish adds a clean, professional look under the hood while maintaining factory mounting points for a true bolt-on installation. Ideal for street, track, or modified Miatas where consistent fuel delivery and higher horsepower support are required.
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 elevated fuel pressures
| Spec | Detail |
|---|---|
| Part Number | DWK7-704 |
| Brand | DeatschWerks |
| Type | High-Flow Fuel Rail |
| Compatibility | 1994-2005 Mazda Miata 1.8L (NA/NB chassis) |
| Material | Billet Aluminum with Black Anodized Finish |
| Country of Origin | United States |
| Warranty | DeatschWerks Limited Warranty |
Whats Included
- One DeatschWerks High-Flow Fuel Rail (complete rail for the 1.8L engine)
- Mounting hardware and O-rings
- Installation instructions
Product Notes
- Designed specifically for the 1994-2005 Mazda Miata with the 1.8L inline-four engine
- Supports significantly higher horsepower than the factory fuel rail
- Professional installation recommended with proper fuel system pressure testing
Installation Notes
- Direct replacement for the factory fuel rail
- Estimated time: 1 hour
- Requires fuel system depressurization and proper torque specifications
This Part Fits
| Year Range | Make | Model | Trim / Engine | Notes |
|---|---|---|---|---|
| 1994-2005 | Mazda | Miata (NA/NB) | 1.8L Inline-Four (all trims including 10th Anniversary, Base, LS, Mazdaspeed, M Edition, SE, Shinsen, STO) | High-Flow Fuel Rail |
Why Choose DeatschWerks Fuel Rails?
- Precision-machined billet aluminum for maximum flow and durability
- Supports high-horsepower Miata builds with consistent fuel delivery
- Trusted by enthusiasts and professional builders for quality and performance
Frequently Asked Questions
- Q: Will this fuel rail fit my 1999 Mazda Miata 1.8L?
A: Yes, it is a direct fit for all 1994-2005 Mazda Miata models with the 1.8L engine. - Q: Does it support boosted applications?
A: Yes, the high-flow design is ideal for supercharged or turbocharged 1.8L Miata builds. - 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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