CUMMINS 3959574 OEM PISTON COOLING NOZZLE PLUG (DELETE PLUG) – RAM 5.9L/6.7L (2003–2018)

Product Description

The CUMMINS 3959574 OEM PISTON COOLING NOZZLE PLUG (DELETE PLUG) is designed for select 2003–2018 5.9L and 6.7L Cummins diesel engines. This genuine Cummins plug is used to seal the piston cooling nozzle bore when a cooling nozzle is removed or when specific engine repair procedures require the passage to be blocked.

Use this OEM Cummins plug during engine rebuilds, block repairs, or specialized engine modifications where piston cooling nozzles are not being utilized. Always verify application requirements and engine specifications before installation.

FEATURES

• Genuine Cummins OEM piston cooling nozzle delete plug
• Direct-fit replacement for applicable Cummins engine blocks
• Provides a secure seal for piston cooling nozzle passages
• Manufactured to Cummins OEM specifications
• Designed for engine repair, service, and rebuild applications

FITMENT

• 2003–2007 Dodge Ram 2500/3500 5.9L Cummins
• 2007.5–2018 Ram 2500/3500 6.7L Cummins
• Select Cummins ISB industrial and commercial applications

WHAT'S INCLUDED

• 1 Cummins 3959574 OEM Piston Cooling Nozzle Plug

CROSS-REFERENCE AND RELATED PRODUCTS

• Cummins 3959574
• Cummins Piston Cooling Nozzle Components
• Cummins Engine Block Service Components
• Cummins Engine Rebuild Parts

SPECIFICATIONS

• Manufacturer: Cummins
• Part Number: 3959574
• Part Type: Piston Cooling Nozzle Plug / Delete Plug
• Engine Compatibility: 5.9L Cummins, 6.7L Cummins
• Fitment Years: 2003–2018
• Vehicle Application: Dodge Ram / Ram 2500 and 3500
• Condition: New OEM Cummins
• Installation Location: Engine Block Oil Gallery
• Installation Type: Direct Replacement

FAQ

Will this part fit my truck?

This plug is used on select 2003–2018 5.9L and 6.7L Cummins applications. Always verify fitment by engine serial number and service requirements before ordering.

What does a piston cooling nozzle plug do?

This plug seals the piston cooling nozzle bore in the engine block when a cooling nozzle is removed or when a repair procedure requires the passage to be blocked.

Is this a genuine Cummins part?

Yes. Cummins 3959574 is a genuine OEM Cummins service component manufactured to factory specifications.

What is included with this listing?

This listing includes one Cummins 3959574 piston cooling nozzle plug.

Can this plug be reused?

Cummins generally recommends inspecting all plugs during engine service and replacing damaged or questionable components to ensure proper sealing.

Do I need any related parts?

Inspect piston cooling nozzles, block plugs, oil gallery plugs, seals, and related engine components during service and replace worn parts as necessary.