2019–2024 Mercedes Sprinter J51 Option Dongle
Enable J51 Auxiliary Fuel Tank Function • One-Time Use Programming Dongle
Unlock your Sprinter’s full fuel system potential with the J51 Option Dongle — designed specifically for 2019–2024 Mercedes-Benz Sprinter vans. This easy-to-use programming device activates the J51 auxiliary fuel tap option, ensuring accurate fuel gauge readings and compatibility with aftermarket fuel-powered systems such as heaters, generators, or auxiliary tanks.
Key Features
✅ Enables J51 Fuel Option
Activates the J51 (Auxiliary Fuel Tap) configuration within your Sprinter’s ECU, allowing proper integration with auxiliary fuel systems and ensuring accurate fuel-level readings.
✅ Plug-and-Play Programming
Simply plug the dongle into your van’s diagnostic port — no coding tools or dealer visits required. Once connected, the dongle automatically configures the J51 feature in minutes.
✅ One-Time Use, VIN-Locked
For security and system integrity, each dongle is permanently tied to the first van it connects to and cannot be reused on another vehicle.
✅ Essential for Accurate Fuel Gauge Function
If your Sprinter is not factory-equipped with J51, your fuel gauge may show incorrect readings after installing an auxiliary tank or tapping into the main fuel system. The J51 Dongle corrects that.
✅ 2019–2024 Compatibility
Compatible with all 2019–2024 Mercedes-Benz Sprinter models equipped with 2.0L or 3.0L diesel engines.
⚠️ Important Notes
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Non-returnable item – Each dongle is VIN-locked after first use.
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Fuel Gauge Compatibility: The dongle ensures proper gauge operation only on vans configured for J51.
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Verification Recommended: Before ordering, contact S&B, send your VIN, or consult your installer to verify if your Sprinter already includes J51 from the factory.
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2025+ Models: As of now, J51 is not required for 2025 and newer Sprinters, and no dongle version is planned.
Compatibility
| Year | Make | Model | Notes |
|---|---|---|---|
| 2019–2024 | Mercedes-Benz | Sprinter | Enables J51 option (Aux Fuel Tap) |
Why You’ll Love It
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Enables J51 auxiliary fuel tap for aftermarket fuel-powered accessories
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Fixes fuel gauge inaccuracies caused by missing J51 calibration
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Fast, plug-and-play installation
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VIN-locked for secure, permanent programming
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Compatible with 2019–2024 Mercedes Sprinter vans
Built for Builders & Upfitters
Whether you’re installing a fuel-powered heater, generator, or auxiliary tank, the J51 Option Dongle ensures your Sprinter’s fuel system works exactly as intended — no guesswork, no dealer visits, no inaccurate readings.
✅ Fits 2019–2024 Mercedes Sprinter | ⛽ Enables J51 Option | ⚙️ Plug & Play | VIN-Locked One-Time Use
