N14 SET:

---Valve guide oem: 3064312

---Intake valve seat oem: 3054590

---Exhaust valve seat oem: 30696924

Engineered to meet Cummins' exacting specifications, these OEM-grade valve seats (#3054590 intake / #30696924 exhaust) deliver uncompromising durability and sealing performance for N14 engines in demanding over-the-road and vocational applications. These precision components maintain critical combustion chamber integrity throughout extended service intervals.

Advanced Material Technology:

The exhaust valve seat utilizes a nickel-chromium-molybdenum superalloy with tungsten reinforcement, specifically formulated to withstand continuous 900°C (1652°F) temperatures while resisting thermal fatigue. The intake seat features a copper-impregnated iron matrix that optimizes heat transfer while maintaining dimensional stability.

Performance Advantages:

1. Extended Service Life – The exhaust seat's composite alloy demonstrates 40% greater wear resistance than conventional materials, particularly valuable in high-mileage trucking applications.

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

   • 30% improved heat dissipation

   • More stable valve clearances during temperature fluctuations

   • Reduced thermal stress on cylinder heads

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

   • Complete valve-to-seat contact

   • Maintained compression ratios

   • Minimized blow-by

Technical Specifications:

• Hardness: 48-52 HRC (exhaust), 38-42 HRC (intake)

• Temperature Range: -40°C to 950°C

• Concentricity: 99.6% minimum

Ideal Applications:

• Long-haul trucking

• Heavy-duty vocational vehicles

• Fire apparatus

• Refrigerated transport

• Specialized haulage

Verified Benefits:
• 35-40% longer service intervals
• 5-7% improved fuel efficiency
• Reduced cylinder head temperatures
• Lower maintenance costs

These Cummins N14 valve seats deliver OEM-quality performance with enhanced durability for severe-service applications. The exhaust seat's tungsten-enhanced alloy provides exceptional protection against extreme thermal cycling in turbocharged configurations.

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.