DeatschWerks 800cc Fuel Injectors – Set of 4 (1990-2005 Mazda Miata NA/NB)
The DeatschWerks 800cc fuel injectors are a high-flow upgrade designed for the 1990-2005 Mazda Miata (NA and NB chassis). These precision flow-matched injectors deliver 800cc/min of fuel flow, making them an excellent choice for naturally aspirated high-rev builds or forced-induction setups on the 1.6L and 1.8L engines.
Each injector is rigorously tested for consistency, atomization, and dynamic range to ensure balanced performance across all cylinders. The set includes four injectors with the correct impedance and connector style for a direct plug-and-play fit on the factory fuel rail and harness.
DeatschWerks injectors are known for their reliability, accuracy, and outstanding support for both street and track applications.
Key Features
- 800cc/min Flow Rate – Supports high-rev naturally aspirated or boosted Miata builds
- Direct-Fit Design – Plug-and-play compatibility with Miata NA/NB fuel rails and harness
- Precision Flow-Matched Set – Ensures balanced fuel delivery across all four cylinders
- High-Quality Construction – Reliable performance and excellent dynamic range
- Set of 4 Injectors – Complete set for full engine replacement
| Spec | Detail |
|---|---|
| Part Number | 18U-05-0800-4 |
| Brand | DeatschWerks |
| Type | 800cc Fuel Injectors (Set of 4) |
| Compatibility | 1990-2005 Mazda Miata (NA / NB) 1.6L / 1.8L |
| Flow Rate | 800cc/min |
| Country of Origin | United States |
| Warranty | DeatschWerks Limited Warranty |
Whats Included
- Set of 4 DeatschWerks 800cc Fuel Injectors
Product Notes
- Designed specifically for the Mazda Miata NA and NB chassis
- Excellent choice for high-rev naturally aspirated or forced-induction builds
- Professional installation recommended with proper ECU tuning
Installation Notes
- Direct replacement for factory fuel injectors
- Requires proper ECU tuning or recalibration after installation
- Estimated time: 1–2 hours
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 1990-2005 | Mazda | Miata (NA / NB) | 800cc Fuel Injectors – Set of 4 |
Why Choose DeatschWerks Fuel Injectors?
- Precision flow-matched and rigorously tested for consistent performance
- Excellent dynamic range and reliability for both street and track use
- Trusted by Miata enthusiasts and professional builders
Frequently Asked Questions
-
Q: Will these 800cc injectors fit my 1999 Mazda Miata NB?
A: Yes, they are a direct-fit replacement for the NA and NB Miata. -
Q: Do I need a tune after installing these injectors?
A: Yes, proper ECU tuning or recalibration is required for optimal performance and safe operation. -
Q: Is professional installation recommended?
A: Recommended along with dyno tuning to ensure correct air/fuel ratios.
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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