OEM Cummins Crankcase Breather 3966164

Premium Replacement for ISB 6.7 / QSB 6.7 Engines | Volgen Power

• Efficient Blow-By Gas Separation
  Prevents oil mist and contaminants from re-entering the engine, ensuring cleaner operation.

• Rugged Construction
  Built with high-efficiency filter media and a durable plastic/metal housing for use in harsh environments.

• OEM Compliance
  Meets Cummins engineering standards for precise fitment and function in ISB/QSB engines.

• Extended Engine Life
  Reduces crankcase pressure and oil contamination, supporting longer service intervals.

• Broad Compatibility
  Applicable across a range of commercial vehicles and industrial applications using Cummins 6.7L engines.

Technical Specifications

Application Scenarios

• Heavy-Duty Trucking
  Ensures clean crankcase ventilation in Dodge Ram, Kenworth, and Freightliner models, improving engine durability.

• Bus Fleets
  Maintains engine cleanliness and reliability in Blue Bird school and transit buses.

• Industrial Equipment
  Supports consistent crankcase performance in Cummins-powered generators and construction machines.

Why Choose Volgen Power

• Trusted OEM Replacement Supplier
  All parts meet or exceed Cummins specifications for quality and durability.

• Global Fulfillment
  Fast worldwide delivery through our optimized inventory network.

• Technical Support
  Our specialists assist with engine compatibility, installation, and bulk order planning.

• Competitive Pricing
  OEM-grade performance at a cost-effective price point for B2B buyers.

Compatibility Verification

To ensure proper fitment:

• Confirm your engine model (ISB 6.7 or QSB 6.7)

• Provide the VIN or Engine Serial Number to our support team
  Contact:

• Website: www.volgenpower.com

• Email: [email protected]

• 24/7 Support: +86 18827435225

Installation Tips

• System Inspection: Check ventilation lines and valve cover condition; replace hoses (e.g., 3948107) if worn.

• Secure Fitment: Properly align the breather with the valve cover port to prevent leaks.

• Routine Maintenance: Monitor for clogging and replace during routine engine servicing.

• Tool Tip: Use a 17mm Allen wrench for Dodge Ram installation (if applicable).

• Reference: Always consult the Cummins ISB/QSB service manual.

FAQs

Q1: Is this a genuine Cummins part?
A1: This is an OEM-quality part manufactured to Cummins specifications, offering the same performance at a more competitive price.

Q2: What engines does it fit?
A2: It is compatible with Cummins ISB 6.7 and QSB 6.7 engines in trucks, buses, and industrial equipment.

Q3: Why is crankcase ventilation important?
A3: It prevents pressure buildup, reduces blow-by gases, and extends engine life.

Q4: When should I replace it?
A4: Replace during routine maintenance or if the breather becomes clogged, per Cummins guidelines.