Fuel Return Pipe Fuel Line 3960041 for Cummins Engine 4B 4BT Replacement

Product Overview

This Fuel Return Pipe / Fuel Line 3960041 is a direct replacement for Cummins 4B and 4BT diesel engines. It carries excess fuel from the injectors back to the tank, maintaining proper system pressure. Ideal for industrial, agricultural, and marine applications using these engines.

Key Features & Performance

• OE-grade material resists diesel fuel corrosion and heat
• Pre-bent to match original routing for hassle-free installation
• Includes necessary fittings and connectors for a complete swap
• Maintains correct fuel return flow to prevent pressure buildup
• Durable construction withstands engine vibration

Fitment & Compatibility

• Cummins 4B Engine
• Cummins 4BT Engine

Common Uses

• Replacement fuel return line on Cummins 4B and 4BT powered equipment
• Used in generator sets, pumps, compressors, and agricultural machinery
• Essential for proper fuel system operation in heavy-duty diesel applications

Technical Specifications

• Part Number(s): 3960041

Frequently Asked Questions

Q: Will this fuel return pipe fit my Cummins 4BT engine? A: Yes, it is specifically designed for Cummins 4B and 4BT engines. Verify your engine serial number to ensure compatibility.

Q: Is this part the same as the OEM line? A: It is manufactured to match OEM specifications and part number 3960041, providing an exact fit and function.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.