Mazda Miata 1.8 fuel rail
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DeatschWerks 94-05 Mazda Miata 1.8 Fuel Rail

DeatschWerks
DWK7-704
887753546609
Fuel Rails
9 Units In Stock - Ships Next Business Day
$ 118.15
$ 118.15

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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