Description
MB6G – USED BOLT
Genuine Cummins 3903035 fuel return banjo bolt for compatible Cummins B-series diesel engines, including Dodge Ram 5.9L and applicable 6.7L applications.
This OEM hollow banjo bolt is used in the engine’s fuel return system, securing the banjo-style connection while allowing fuel to pass through the internal passage.
The 3903035 is used at the rear cylinder head fuel return connection on applicable Dodge Ram Cummins diesel engines. It is also found in fuel-system plumbing on various Cummins industrial and commercial engine applications.
Product Specifications:
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Manufacturer: Cummins
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Part Number: 3903035
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Part Type: Fuel Return Banjo Connector Bolt
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Thread Diameter: M12 (12 mm)
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Thread Pitch: 1.5 mm
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Nominal Length: 24 mm (0.94″)
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Thread Type: Metric
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Engine Applications: Cummins 4BT 3.9L, 6BT 5.9L, and applicable ISB 5.9L / 6.7L engines
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Vehicle Applications: Compatible Dodge Ram 2500 and 3500 diesel trucks
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Quantity: 1 bolt
This replacement banjo bolt is suitable for applicable fuel-system repairs, cylinder head service and diesel engine rebuilding.
Verify fitment using the engine serial number and original part number before ordering. Sealing washers and additional hardware are not included unless specifically shown in the product photos.


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