S&B Fuel Sending Unit Aftermarket Lift Pumps (REAR)

2013–2018, 2021–2024 Ram 2500 6.7L Diesel / 2013–2018, 2021–2024 Ram 3500 6.7L Diesel

Part #: 86-3001

Overview

The S&B Fuel Sending Unit is a precision-engineered aftermarket solution designed specifically for Ram 2500 and 3500 trucks equipped with the 6.7L diesel engine from model years 2013 to 2018 and 2021 to 2024. This sending unit addresses a common issue faced by diesel owners using aftermarket lift pumps: inaccurate fuel level readings when the tank is at or below a quarter full. By replacing the factory sending unit with this S&B component, drivers can reliably monitor fuel levels and confidently drive to empty without risking pump starvation or fuel delivery problems.

Designed as a direct plug-and-play replacement, the S&B Fuel Sending Unit requires no modifications to your OEM fuel tank or existing sending unit. It is engineered exclusively for use with aftermarket lift pumps, ensuring optimal fuel flow and accurate fuel level readings under demanding conditions. Please note, this product is not compatible with trucks that come stock with 48 or 50 gallon fuel tanks.

Key Features

Engineered to enhance fuel delivery accuracy and reliability, the S&B Fuel Sending Unit offers the following key benefits:

• Improves fuel level accuracy at low tank volumes, eliminating false low fuel warnings.
• Compatible with aftermarket lift pumps to ensure consistent fuel supply to the engine.
• Plug-and-play design requires no modifications to OEM fuel tank or sending unit.
• Durable construction designed to withstand harsh diesel fuel environments.
• Specifically calibrated for Ram 2500 and 3500 6.7L diesel trucks from 2013–2018 and 2021–2024.
• Helps prevent lift pump starvation and potential engine performance issues.
• Maintains OEM fuel gauge functionality for seamless integration.
• Not compatible with factory 48 or 50 gallon tanks—designed for standard tank sizes.

Construction & Design

The S&B Fuel Sending Unit is crafted from high-quality materials engineered to resist corrosion and wear from diesel fuel and additives. Its robust design ensures long-lasting performance and reliability, even under the demanding conditions of heavy-duty diesel applications. The unit’s sensor and float mechanism are precisely calibrated to provide accurate fuel level readings, especially when paired with aftermarket lift pumps that increase fuel flow rates beyond OEM specifications.

Manufactured to meet strict quality standards, this sending unit integrates seamlessly with the factory fuel system, preserving the integrity of your truck’s fuel tank and electrical connections. The plug-and-play configuration simplifies installation while maintaining the durability expected from S&B Filters products.

Installation & Fitment

Installation of the S&B Fuel Sending Unit is straightforward and designed to be a direct replacement for the factory sending unit on compatible Ram 2500 and 3500 trucks. No cutting, welding, or modifications to the OEM fuel tank or existing sending unit are necessary. This ensures a clean, hassle-free upgrade that maintains the integrity of your fuel system.

It is important to verify that your truck is equipped with an aftermarket lift pump, as this sending unit is specifically designed to work in conjunction with those systems. Additionally, confirm that your fuel tank is not the larger 48 or 50 gallon factory option, as this product is incompatible with those tanks.

What's Included

• S&B Fuel Sending Unit (Rear)
• Installation instructions
• Sealing components and connectors as required for plug-and-play installation

Ideal For

This fuel sending unit is ideal for Ram 2500 and 3500 diesel truck owners who have upgraded to aftermarket lift pumps and are experiencing inaccurate fuel level readings or fuel starvation issues at low tank levels. It is perfect for enthusiasts and professionals who demand reliable fuel delivery and precise fuel monitoring without compromising the OEM fuel system.

Whether you use your truck for towing, hauling, or daily driving, the S&B Fuel Sending Unit ensures your diesel engine receives consistent fuel flow and accurate fuel gauge readings, enhancing confidence and performance on the road.

S&B Filters builds high-flow air filtration and intake systems for trucks and diesel performance applications, focusing on airflow, filtration efficiency, and durability. Their cold air intake kits and replacement filters are popular upgrades for enthusiasts who want improved breathing, towing confidence, and long-term serviceability on hard-working rigs.