DeatschWerks
DW400 In-Tank Fuel Pump (415 lph)
SKU: 9-401-1041
View on DeatschWerks website+0.3
Pounds Added vs Stock
What You'll Need
Fuel system depressurization required. Rear seat removal for tank access.
Enthusiasts looking to improve their Challenger's performance
Compatible Vehicles
Price Comparison
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Why Install This?
Benefits
- Moderate install — doable in a home garage with some mechanical experience
What Does This Do?
The stock HEMI fuel pump flows about 255 liters per hour — enough for a stock engine but NOT enough for a supercharged or turbocharged engine. DeatschWerks' DW400 flows 415 lph, giving you 63% more fuel capacity. This is a drop-in replacement for the stock pump — it uses the same connector and fits in the stock fuel tank cradle. If you're installing a supercharger, this is not optional — running out of fuel under boost (lean condition) causes detonation that will destroy pistons and head gaskets within seconds. This pump supports up to approximately 750 HP on gasoline or 600 HP on E85.
Fitment Notes
Fits 2008-2023 Challenger all HEMI engines. Must be tuned when paired with larger injectors.
Tune Required
This part requires an ECU tune to function correctly. Without a tune, the engine computer won't adjust for the new part, potentially causing poor performance, check engine lights, or engine damage.
Technical Details
High-flow 415 lph fuel pump for forced induction builds. Drop-in replacement for stock pump.
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