DeatschWerks DWK9-421-0836 DW420 Series 420 LPH In-Tank Fuel Pump with Install Kit for 1989-1993 Mazda Miata

DW420 series, 420lph in-tank fuel pump w/ install kit for Miata 89-93.

Upgrade the fuel delivery system in your 1989–1993 Mazda Miata with the DeatschWerks DW420 Series 420 LPH in-tank fuel pump and installation kit. Designed for performance-focused applications, this fuel pump provides increased fuel flow to help support engine modifications and demanding fuel system requirements while maintaining an in-tank configuration.

The DeatschWerks DWK9-421-0836 package includes an installation kit to simplify replacement and installation. Its high-flow design is well suited for modified Miata applications that require more fuel capacity than the original pump can provide. Verify your vehicle configuration and fuel system requirements before installation to ensure proper compatibility.

This product is intended for automotive use and is not CARB approved. A CARB acknowledgement may be required, and emissions regulations may restrict use on vehicles operated on public roads in certain regions. The pump is not intended for carbureted applications. Professional installation is recommended, and all fuel system work should be performed with appropriate safety procedures to prevent fuel leaks, ignition hazards, or component damage.

Product Specifications and Technical Data

• Brand: DeatschWerks
• Part Number: DWK9-421-0836
• Series: DW420
• Fuel Pump Type: In-tank electric fuel pump
• Fuel Flow Rating: 420 liters per hour
• Application: Automotive fuel systems
• Fuel System Compatibility: Fuel-injected applications; not designed for carbureted systems
• Regulatory Status: Not CARB approved; emissions compliance should be verified before use

Fitment

Fits select 1990–1993 Mazda Miata applications, including model years 1990, 1991, 1992, and 1993. Confirm the vehicle year, fuel system configuration, and existing pump connection details before ordering.

What's Included

One DeatschWerks DW420 Series 420 LPH in-tank fuel pump and installation kit.

Features:

• High-flow fuel delivery: Provides a 420 liters-per-hour flow rating to support performance-oriented and modified fuel systems.
• In-tank replacement design: Installs inside the fuel tank for compatibility with the original-style fuel pump location.
• Installation kit included: Includes supporting components intended to simplify fuel pump replacement.
• Miata-specific application: Designed for select 1989–1993 Mazda Miata fuel system applications; verify exact vehicle compatibility before installation.

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

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