CUMMINS 4937308 GENUINE OEM PISTON COOLING NOZZLE FOR 2003-2018 5.9L & 6.7L CUMMINS

The Cummins 4937308 piston cooling nozzle is a genuine OEM oil squirter for 2003-2018 Dodge Ram Cummins 5.9L and 6.7L engines. This nozzle directs engine oil to the underside of the pistons, providing critical cooling and lubrication under heavy load, towing, or high-performance conditions.

Maintaining properly functioning cooling nozzles prevents piston overheating, scuffing, and premature engine wear. Trust genuine Cummins nozzles for exact fit and long-lasting reliability.

Features & Benefits

• OEM Quality: Manufactured by Cummins for precise fitment and durability.
• Critical Cooling: Directs oil spray to pistons to manage heat and reduce friction.
• Engine Protection: Prevents piston scuffing and thermal failure under load.

Fitment

• 2003-2007 Dodge Ram 2500/3500 5.9L Cummins
• 2007.5-2018 Dodge Ram 2500/3500 6.7L Cummins

Cross Reference Part Numbers

• Cummins 4937308

Frequently Asked Questions

What does a piston cooling nozzle do?

It sprays oil directly on the bottom of the piston to help manage piston temperature and reduce wear caused by high cylinder pressures.

When should I replace piston cooling nozzles?

Replace if clogged, damaged, or during an engine rebuild to ensure proper piston cooling and lubrication.

Is this part OEM Cummins?

Yes. This is a genuine Cummins part, not an aftermarket substitute.

Detailed Fitment

• 2003 Dodge Ram 2500/3500 5.9L Cummins
• 2004 Dodge Ram 2500/3500 5.9L Cummins
• 2005 Dodge Ram 2500/3500 5.9L Cummins
• 2006 Dodge Ram 2500/3500 5.9L Cummins
• 2007 Dodge Ram 2500/3500 5.9L Cummins
• 2008 Dodge Ram 2500/3500 6.7L Cummins
• 2009 Dodge Ram 2500/3500 6.7L Cummins
• 2010 Dodge Ram 2500/3500 6.7L Cummins
• 2011 Dodge Ram 2500/3500 6.7L Cummins
• 2012 Dodge Ram 2500/3500 6.7L Cummins
• 2013 Dodge Ram 2500/3500 6.7L Cummins
• 2014 Dodge Ram 2500/3500 6.7L Cummins
• 2015 Dodge Ram 2500/3500 6.7L Cummins
• 2016 Dodge Ram 2500/3500 6.7L Cummins
• 2018 Dodge Ram 2500/3500 6.7L Cummins

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