DeatschWerks DWK18U-05-0650-4 650cc Fuel Injectors for Mazda Miata NA/NB, Set of 4

Matched set of 4 650cc injectors for NA/NB Mazda Miata

Upgrade fuel delivery in your naturally aspirated or turbocharged Mazda Miata with the DeatschWerks DWK18U-05-0650-4 matched set of four 650cc fuel injectors. Designed for NA and NB Miata applications, these injectors provide consistent fueling and reliable performance for street, track, and performance-oriented builds.

The matched-flow design helps promote balanced fuel delivery across all cylinders, supporting improved tuning accuracy and dependable engine operation. With a 650cc-per-minute flow rate, this set is suited for applications requiring more fuel capacity than factory injectors while retaining the compatibility and practicality expected from a direct replacement-style upgrade.

DeatschWerks 650cc injectors are intended for automotive use and are not California Air Resources Board approved. Professional installation and ECU calibration are recommended to ensure proper fuel delivery, air-fuel ratios, and drivability after installation. Verify fuel system compatibility, injector connectors, and engine management requirements before purchase.

Fitment: Designed to fit select 1990–1995 Mazda Miata NA applications and compatible NA/NB Miata configurations. Confirm the specific model year, engine, fuel rail, connector style, and tuning requirements before installation.

What's Included: One matched set of four DeatschWerks DWK18U-05-0650-4 650cc fuel injectors.

Key Product Specifications & Technical Data

• Brand: DeatschWerks
• Part Number: DWK18U-05-0650-4
• Injector Quantity: Four matched injectors
• Flow Rating: 650cc per minute
• Application: Automotive fuel system
• Vehicle Platform: Mazda Miata NA/NB
• Fuel Delivery: Electronic fuel injection
• Emissions Status: Not CARB approved

Features:

• Matched Set: Includes four flow-matched injectors to support balanced fuel delivery across the engine.
• 650cc Fuel Capacity: Provides increased fuel flow for performance engines and higher-demand applications.
• Mazda Miata Compatibility: Designed for select NA and NB generation Mazda Miata fuel systems.
• Tuning Support: Helps provide consistent injector performance for calibrated aftermarket engine management systems.

Fitments:
1990 Mazda Miata Base
1991 Mazda Miata Base
1991 Mazda Miata SE
1992 Mazda Miata Base
1993 Mazda Miata Base
1993 Mazda Miata LE
1994 Mazda Miata Base
1994 Mazda Miata M Edition
1995 Mazda Miata Base
1995 Mazda Miata M Edition
1996 Mazda Miata Base
1996 Mazda Miata M Edition
1997 Mazda Miata Base
1997 Mazda Miata M Edition
1997 Mazda Miata STO
1999 Mazda Miata 10th Anniversary
1999 Mazda Miata Base
2000 Mazda Miata Base
2000 Mazda Miata LS
2000 Mazda Miata SE
2001 Mazda Miata Base
2001 Mazda Miata LS
2001 Mazda Miata SE
2002 Mazda Miata Base
2002 Mazda Miata LS
2002 Mazda Miata SE
2003 Mazda Miata Base
2003 Mazda Miata LS
2003 Mazda Miata SE
2003 Mazda Miata Shinsen
2004 Mazda Miata Base
2004 Mazda Miata LS
2004 Mazda Miata Mazdaspeed
2005 Mazda Miata Base
2005 Mazda Miata LS
2005 Mazda Miata Mazdaspeed

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1