CUMMINS 3909696 OEM FUEL INJECTOR RETURN MANIFOLD (RETURN LINE) – 5.9L CUMMINS 12V (1989–1993)

Product Description

The CUMMINS 3909696 OEM FUEL INJECTOR RETURN MANIFOLD (RETURN LINE) is designed for 1989–1993 Dodge Ram trucks equipped with the 5.9L 12-valve Cummins diesel engine. This genuine Cummins fuel system component routes excess fuel from the injectors back to the fuel system while maintaining proper fuel circulation and system operation.

Use this part when repairing leaking, cracked, corroded, or damaged injector return components. Proper fuel return operation helps maintain fuel system efficiency and reliability. Always verify fitment by engine serial number and part number before ordering.

FEATURES

• Genuine Cummins OEM fuel injector return manifold
• Direct-fit replacement for factory fuel return systems
• Designed for 1989–1993 5.9L Cummins 12-valve applications
• Helps maintain proper fuel return flow from injectors
• Restores fuel system reliability and leak-free operation
• Ideal for repair, maintenance, or restoration projects

FITMENT

• 1989–1993 Dodge Ram 2500 5.9L Cummins 12-Valve
• 1989–1993 Dodge Ram 3500 5.9L Cummins 12-Valve
• VE rotary injection pump-equipped applications

WHAT'S INCLUDED

• 1 Cummins 3909696 OEM Fuel Injector Return Manifold

CROSS-REFERENCE AND RELATED PRODUCTS

• Cummins 3909696
• Fuel Injector Return Line Components
• VE Pump Fuel System Components
• Cummins Fuel Supply and Return Hardware

SPECIFICATIONS

• Manufacturer: Cummins
• Part Number: 3909696
• Part Type: Fuel Injector Return Manifold
• Fuel System Type: VE Pump Mechanical Injection
• Engine Compatibility: 5.9L Cummins 12-Valve
• Fitment Years: 1989–1993
• Vehicle Application: Dodge Ram 2500 / 3500
• Condition: New OEM Cummins
• Installation Type: Direct Replacement

FAQ

Will this part fit my truck?

This fuel injector return manifold fits many 1989–1993 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 12-valve Cummins engine. Always verify fitment using your engine serial number and part number before ordering.

Is this a genuine Cummins part?

Yes. Cummins 3909696 is a genuine OEM Cummins fuel injector return manifold designed to meet factory specifications.

What does the injector return manifold do?

The return manifold collects excess fuel from the injectors and routes it back through the fuel return system to maintain proper fuel circulation.

What are signs of a failing return manifold?

Common symptoms include fuel leaks around the injectors, fuel odor, visible cracks, corrosion, or damaged return fittings.

Does this fit VE pump-equipped engines?

Yes. This return manifold is designed for 1989–1993 5.9L Cummins engines equipped with the Bosch VE rotary injection pump.

Do I need any related parts?

Inspect injector return seals, return hoses, fuel fittings, injector hardware, and related fuel system components during installation and replace worn parts as necessary.