DeatschWerks DW420 Series Fuel Pump

2004–2007 Cadillac CTS-V

Part #: 9-421-1038

Overview

The DeatschWerks DW420 Series 420lph In-Tank Fuel Pump is engineered to deliver reliable, high-volume fuel delivery for your Cadillac CTS-V. Designed specifically for performance enthusiasts and those seeking to upgrade their fuel system, this pump ensures your vehicle maintains optimal fuel pressure and flow under demanding conditions. Whether you're building a high-horsepower setup or simply want a more robust fuel supply, the DW420 Series provides the performance and durability you need.

Built with precision and quality, this fuel pump is ideal for street-driven vehicles, spirited driving, and track use. It helps support increased horsepower and torque by providing a consistent fuel flow, reducing the risk of fuel starvation during aggressive driving or tuning sessions. Please note, this product is intended for off-road or racing applications only and is not CARB-approved, making it illegal for use or installation in California.

Key Features

The DW420 Series fuel pump incorporates advanced engineering and high-quality materials to ensure durability and performance. Key features include:

• High-capacity 420 liters per hour (lph) flow rate, supporting high-horsepower builds and aggressive tuning.
• In-tank design for optimal cooling and quiet operation, reducing noise compared to external pumps.
• Constructed with a robust, corrosion-resistant body to withstand harsh fuel environments and ensure longevity.
• Compatible with E85, ethanol blends, and standard gasoline, offering flexibility for various fuel setups.
• Drop-in replacement for OEM pumps, making installation straightforward without modifications.
• Includes an installation kit with all necessary hardware and fittings for a hassle-free upgrade.
• Designed to improve fuel delivery consistency, supporting increased power levels and improved throttle response.
• Engineered to meet or exceed OEM standards for quality and reliability, ensuring long-term performance.

Construction & Design

The DeatschWerks DW420 Series pump features a high-performance, high-flow motor housed within a durable, corrosion-resistant body. Its in-tank configuration utilizes a precision-matched impeller and motor assembly to deliver consistent fuel pressure and volume. The pump's design emphasizes quiet operation and thermal management, helping prevent overheating during extended use. The kit includes all necessary components for a seamless installation, including fittings and wiring harnesses, ensuring compatibility with your Cadillac CTS-V's fuel system.

Installation & Fitment

The DeatschWerks DW420 Series fuel pump is a direct replacement for the factory pump in 2004–2007 Cadillac CTS-V models. Its drop-in design means no modifications to the fuel tank or vehicle wiring are necessary. The installation process is straightforward for those familiar with fuel system upgrades, and the included hardware simplifies mounting and connection. Please note, this product is intended for off-road or racing use only and is not legal for street use in California or other regions with similar regulations. No tuning or additional modifications are required for basic installation, but verifying fuel system compatibility and pressure settings is recommended for optimal performance.

What's Included

• DeatschWerks DW420 Series 420lph in-tank fuel pump
• Complete installation kit with fittings, wiring harness, and hardware
• Instruction manual for proper installation and safety precautions

Ideal For

• High-performance street and track applications
• Upgrading factory fuel pumps for increased horsepower
• Enthusiasts seeking reliable, high-capacity fuel delivery
• Vehicles running ethanol blends or requiring support for aggressive tuning