QSK23 SET:

---Valve guide oem: 4007722

---Intake valve seat oem: 6240111321

---Exhaust valve seat oem: 6240111330

Precision-engineered for Cummins QSK23 engines, these OEM-specified valve seats (#6240111321 intake / #6240111330 exhaust) deliver exceptional durability and thermal performance in demanding industrial and marine applications. These critical components maintain perfect valve sealing integrity under extreme operating conditions, ensuring optimal engine efficiency throughout extended service intervals.

Advanced Material Technology:

The exhaust valve seat (6240111330) utilizes a nickel-chromium-molybdenum superalloy with tungsten reinforcement, specifically formulated to withstand continuous 950°C (1742°F) exhaust gas temperatures while resisting thermal fatigue and corrosion. The intake seat (6240111321) features a copper-impregnated iron matrix that combines superior heat transfer properties with excellent machinability for precision surface finishes.

Performance Advantages:

1. Extended Component Life – The exhaust seat's composite alloy structure demonstrates 50% greater wear resistance than conventional materials in high-hour marine and power generation applications.

2. Optimized Thermal Management – The intake seat's copper-rich composition provides:

   • 35% improved heat dissipation versus standard materials

   • More stable valve clearances during temperature fluctuations

   • Reduced thermal stress on cylinder heads

3. Precision Sealing Surfaces – CNC-machined to 0.5μm Ra surface finish ensures:

   • Complete circumferential valve contact

   • Maintained compression ratios

   • Minimized blow-by across all operating conditions

Technical Specifications:

• Exhaust Seat Material: Tungsten nickel alloy

• Intake Seat Material: Tungsten nickel alloy

• Concentricity: 99.6% minimum

Critical Applications Include:

• Marine propulsion and auxiliary power

• Heavy-duty generator sets

• Mining and construction equipment

• Railroad and locomotive engines

• Industrial pumping systems

Verified Performance Benefits:
Field testing demonstrates:
• 40-45% longer service intervals
• 6-8% improved fuel efficiency
• Reduced cylinder head temperatures
• Lower maintenance costs through extended overhaul periods

These Cummins QSK23 valve seats represent premium sealing solutions for high-output diesel engines. Available in standard configurations with options for oversized repairs, they deliver OEM-quality performance with enhanced durability for severe-service applications. The exhaust seat's tungsten-enhanced alloy provides exceptional protection against extreme temperatures and corrosive exhaust environments.

With over 30 years of expertise in automotive parts export, we specialize in manufacturing high-precision, high-performance components for global markets. Our products meet stringent quality standards and are trusted by clients worldwide.

• Equipped with advanced testing machinery for material analysis and heat treatment verification.
• Dedicated engineering and QC teams ensure every product meets your exact specifications and performance requirements.

• Custom solutions available based on your samples or technical drawings.
• Trial orders (small quantities accepted) to facilitate smooth collaboration and build long-term partnerships.