CUMMINS 3944797 OEM CRANKCASE BREATHER WITH OIL FILL HOLE – RAM 5.9L (1989–2002)

Product Description

The CUMMINS 3944797 OEM CRANKCASE BREATHER WITH OIL FILL HOLE is a genuine Cummins replacement engineered to restore proper crankcase ventilation on 1989–2002 5.9L Dodge Ram trucks. This unit prevents excessive crankcase pressure, reduces oil vapor escape, and ensures long-term engine reliability. 5.9L Cummins crankcase breather OEM, Cummins 3944797, 12-valve breather, 24-valve breather, Cummins ventilation system repair, genuine Cummins parts, CPP Diesel Cummins parts

This genuine Cummins assembly includes the integrated oil fill port, maintaining factory function and sealing integrity. If your original breather is leaking, clogged, or causing oil misting, the 3944797 is the direct-fit solution built to meet OEM specifications.

Fitment

• 1989–1998 Dodge Ram 2500/3500 5.9L Cummins 12-Valve
• 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24-Valve
• Direct replacement for Cummins part #3944797

Cross-Reference (Cummins Only)

• Cummins 3937113 Crankcase Breather
• Cummins 3925588 Breather Housing

FAQ

What symptoms indicate a failing crankcase breather?
Excessive oil misting, dipstick blow-out, oil leaks, or increased crankcase pressure are the most common signs.

Is this Cummins part better than aftermarket replacements?
Yes—genuine Cummins breathers maintain OEM-grade filtration and pressure control unmatched by aftermarket alternatives.

Does this breather include the oil fill opening?
Yes, the 3944797 assembly includes the integrated factory-style oil fill port.

Does it fit both 12-valve and 24-valve engines?
Yes—this OEM part fits all 1989–2002 5.9L Cummins engines.

Is this a brand-new genuine Cummins part?
Absolutely—CPP Diesel sells only new, genuine Cummins components.

Specifications for CUMMINS 3944797