Feed Big Power Safely On A C6 Corvette Fuel System
Corvette owners chasing serious horsepower quickly run into the limits of the factory in-tank pump, especially once forced induction or nitrous enters the picture. The DeatschWerks 9-403-7203 module drops the DW400 pump into the factory-style housing for a direct fit upgrade that keeps fuel delivery ahead of the power curve.
Key Features
- Houses the DeatschWerks DW400 pump, rated up to 415 liters per hour at 40 psi
- Direct fit into the factory-style module housing for a plug-and-play upgrade
- Compatible with pump gas, E85, and race fuel
- Carbon commutator and fully encapsulated armature support ethanol blends
- Rated to 120 psi maximum fuel pressure
- Backed by the DeatschWerks 3 year no-fault warranty
- Part number 9-403-7203 is manufactured in partnership with Bosch for consistent quality
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2007-2013 | Chevrolet | Corvette |
Specifications
| Detail | Value |
|---|---|
| MPN | 9-403-7203 |
| UPC | 887753547897 |
| Pump Model | DW400 |
| Flow Rate | 415 LPH @ 40 psi |
| Max Pressure | 120 psi |
| Current Draw | 16.1 amps @ 40 psi (13.5V) |
| Warranty | 3-Year No-Fault |
What's Included
- 1 DeatschWerks 9-403-7203 fuel pump module with DW400 pump installed
- Mounting hardware and seals for factory-style installation
About DeatschWerks
DeatschWerks specializes in high performance fuel system components, including fuel pumps, injectors, and fuel rails engineered and tested to support serious horsepower goals while maintaining OEM level reliability.
Related Parts on Our Site
- DeatschWerks universal high impedance injector sets
- DeatschWerks fuel rails for late model performance platforms
FAQ
What is the 9-403-7203?It is a DeatschWerks fuel pump module built around the DW400 pump, designed as a direct fit upgrade for the factory-style module in 2007-2013 C6 Corvettes.
How much fuel does the DW400 pump flow?The DW400 flows up to 415 liters per hour at 40 psi, making it one of the highest flowing in-tank pumps available for this application.
Is this module compatible with E85?Yes, the DW400 pump inside this module uses a carbon commutator and fully encapsulated armature that support E85 and other ethanol blends.
Does this pump support forced induction builds?Yes, the DW400 is commonly used on turbocharged and supercharged Corvette builds that need higher fuel volume than the factory pump provides.
What is the maximum fuel pressure rating?This module is rated to 120 psi maximum fuel pressure.
Is installation plug-and-play?The module is designed to directly replace the factory-style housing, so most installations do not require additional wiring modifications beyond standard pump replacement steps.
What warranty does DeatschWerks offer on this fuel pump module?DeatschWerks backs this module with a 3 year no-fault warranty.
Can this pump run on race fuel?Yes, the DW400 pump is rated for compatibility with pump gas, E85, and race fuel.
Install Instructions
- Relieve fuel system pressure and disconnect the vehicle battery
- Access the fuel tank and remove the factory fuel pump module following the service manual procedure
- Transfer any required factory components to the new module if not already included
- Install new seals and gaskets supplied with the module
- Install the DeatschWerks 9-403-7203 module into the fuel tank in place of the factory unit
- Reconnect all electrical and fuel line connections
- Reinstall the fuel tank and reconnect the battery
- Pressurize the system and check thoroughly for leaks before starting the engine
Chevrolet Corvette Parts & Accessories
Shop Chevrolet Corvette parts and accessories at Black Ops Auto Works for C5, C6, C7, C8, Z06, ZR1, Stingray, Grand Sport, and track-focused Corvette builds. This collection includes cold air intakes, air filters, catch cans, oil separators, exhaust systems, axle-back exhausts, X-pipes, brake pads, brake rotors, big brake kits, suspension parts, sway bars, ride height simulators, carbon fiber lips, spoilers, hoods, fenders, brake ducts, lighting upgrades, wheel spacers, clutches, fuel system parts, and Corvette styling accessories. Use this Chevrolet Corvette collection to find the right upgrade by generation, product category, brand, and performance goal. Intake and exhaust upgrades help improve airflow and sound, brake upgrades support stronger stopping power, suspension parts improve handling and chassis control, carbon fiber parts add aggressive styling, and oil separators, catch cans, clutch parts, fuel system upgrades, and cooling components help support more demanding street...
View Chevrolet Corvette Parts & Accessories Products
DeatschWerks
Welcome to our DeatschWerks collection, the ultimate destination for high-performance EFI fuel system solutions. Established in 2004, DeatschWerks has been at the forefront of the automotive industry, providing innovative components designed for enthusiasts and professionals alike. Why Choose DeatschWerks? Located in Oklahoma City, DeatschWerks operates from a state-of-the-art 36,000 sq. ft. facility, ensuring top-notch quality and performance in every product. The collection features: High flow drop-in fitment fuel injectors Advanced fuel pumps like the DW300, which outflows standard options Innovative modular surge tanks for superior fuel management Conversion fuel rails and dual-stage fuel filters Ethanol compatible fuel pressure regulators Comprehensive Offerings With over 1000 SKUs available, the DeatschWerks collection caters to a variety of applications including Sport Compact, Modern Muscle, and Euro vehicles. Each product is crafted with precision to enhance your ve...
View DeatschWerks Products
Engine
This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...
View Engine Products
Fuel Delivery
A properly designed fuel delivery system is the backbone of any high-performance engine build, ensuring the injectors or carburetor receive a consistent supply of fuel at the correct pressure regardless of engine load, RPM, or fuel demand. From factory replacement pumps keeping daily drivers on the road to high-flow in-tank modules supporting 1000-horsepower builds, the right fuel delivery components prevent lean conditions, injector damage, and fuel starvation at the worst possible moment. Modern EFI systems are particularly sensitive to fuel pressure variation, with even small drops causing misfires and power loss under hard acceleration. Whether you are restoring a factory system or engineering a purpose-built race setup, matching pump flow rate and fuel pressure regulation to your injector and engine requirements is essential. Popular Upgrades Top-selling fuel delivery components include Aeromotive Phantom in-tank fuel pump kits that retrofit into factory tanks without custom fa...
View Fuel Delivery Products
Fuel Pumps
A fuel pump is the foundation of every fuel system, and matching pump flow capacity to your engine's actual demand is one of the most critical decisions in any EFI or performance build. Undersized pumps cause lean conditions under hard acceleration that damage pistons and injectors, while oversized pumps can pressurize the fuel system beyond regulator capacity and require additional return plumbing to handle excess flow. Modern in-tank brushless pump designs from Walbro, TI Automotive, and Aeromotive deliver high flow rates with lower current draw and longer service life compared to older brush-style commutator designs. Diesel lift pumps serve a different function, providing pressurized supply to the high-pressure injection pump while also filtering water and particulates, and selecting the right lift pump for your diesel platform directly affects injection system longevity. Popular Upgrades Top-selling fuel pumps include the Walbro 255 LPH and 450 LPH in-tank pumps for popular turb...
View Fuel Pumps Products


