DeatschWerks
340 lph In-Tank Fuel Pump
SKU: 9-301-1041
View on DeatschWerks websiteWhat 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
Compare prices across 2 retailers — all links go to the real product page
Why Install This?
Benefits
- Moderate install — doable in a home garage with some mechanical experience
What Does This Do?
The DW300 (340 lph) sits between the stock pump (~255 lph) and the DW400 (415 lph). It's the right choice for mildly supercharged builds running 6-10 PSI of boost. Benefits: drop-in replacement that uses the stock fuel pump module — no cutting, splicing, or modified wiring. 340 lph provides enough flow for up to roughly 550-600 wheel HP on gasoline. The higher flow rate also runs cooler than a maxed-out stock pump, extending pump life. Trade-offs: slightly louder than the stock pump — you may hear a low hum from the rear of the car at idle (normal for high-flow pumps). Requires a tune if paired with larger injectors (the ECU needs to know the fuel system has changed). If you're planning a 15+ PSI build or E85 conversion, skip the 340 and go straight to the DW400 (415 lph) — E85 requires ~30% more fuel flow. For naturally aspirated builds, the stock pump is fine. Size your fuel pump to your planned power level — upgrading to the 340 now and the 415 later means paying twice.
Fitment Notes
Fits 2008-2023 Challenger all HEMI engines.
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
Mid-range fuel pump upgrade, 340 lph. Good for mild-to-moderate forced induction.
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