The DeatschWerks DW400 is a 415 LPH in-tank fuel pump supplied with the 9-1047 install kit for the Ford Mustang and F-150. This kit drops the high-flow pump into the factory module and supports high-output and boosted builds that outrun the stock pump.
Specifications
| Type | In-tank fuel pump (DW400) |
| Flow | 415 LPH |
| Mounting | In-tank |
| Includes | 9-1047 install kit (1/8in Venturi) |
| Fitment | Ford Mustang 2015-2025 / Ford F-150 2009-2025 |
| Part Number | 9-403-1047 |
Documents: Technical Bulletin (PDF) | Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2010-2014 | Ford | F-150 | FX2 |
| 2009-2014 | Ford | F-150 | FX4 |
| 2010-2012 | Ford | F-150 | Harley-Davidson Edition |
| 2009-2025 | Ford | F-150 | King Ranch |
| 2009-2025 | Ford | F-150 | Lariat |
| 2011 | Ford | F-150 | Lariat Limited |
| 2013-2014,2016-2023 | Ford | F-150 | Limited |
| 2009-2025 | Ford | F-150 | Platinum |
| 2018-2025 | Ford | F-150 | Police Responder |
| 2017-2025 | Ford | F-150 | Raptor |
| 2016-2025 | Ford | F-150 | SSV |
| 2009-2014,2024-2025 | Ford | F-150 | STX |
| 2010-2014 | Ford | F-150 | SVT Raptor |
| 2021-2025 | Ford | F-150 | Tremor |
| 2009-2025 | Ford | F-150 | XL |
| 2009-2025 | Ford | F-150 | XLT |
| 2019-2020 | Ford | Mustang | Bullitt |
| 2024-2025 | Ford | Mustang | Dark Horse |
| 2024-2025 | Ford | Mustang | Dark Horse Premium |
| 2015-2025 | Ford | Mustang | EcoBoost |
| 2015-2025 | Ford | Mustang | EcoBoost Premium |
| 2015-2025 | Ford | Mustang | GT |
| 2015 | Ford | Mustang | GT 50 Years Limited Edition |
| 2015-2025 | Ford | Mustang | GT Premium |
| 2021-2023 | Ford | Mustang | Mach 1 |
| 2015-2020 | Ford | Mustang | Shelby GT350 |
| 2015-2020 | Ford | Mustang | Shelby GT350R |
| 2020-2021 | Ford | Mustang | Shelby GT500 |
| 2015-2017 | Ford | Mustang | V6 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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