M11 SET:

---Valve guide oem: 4923471 / 3328786

---Intake valve seat oem: 3090704

---Exhaust valve seat oem:  3090704

Precision-engineered for Cummins M11 engines, this OEM-grade valve seat delivers exceptional durability and reliable sealing performance in both intake and exhaust applications. Designed to withstand the rigors of heavy-duty operation, it maintains optimal combustion chamber integrity throughout extended service intervals.

Advanced Material Technology:
The valve seat utilizes a specialized alloy composition that balances wear resistance with thermal conductivity. This carefully engineered material withstands continuous exposure to 800°C (1472°F) temperatures while resisting thermal fatigue and oxidation, making it equally effective for intake and exhaust positions in many M11 engine configurations.

Performance Advantages:

1. Extended Component Life – The proprietary alloy formulation demonstrates 30-40% greater wear resistance than conventional materials, particularly valuable in high-mileage applications.

2. Optimized Heat Management – The material's balanced composition provides:

   • Effective heat dissipation from critical valve areas

   • Stable valve clearances during temperature fluctuations

   • Reduced thermal stress on cylinder heads

3. Precision Sealing Surface – CNC-machined to 0.6μm Ra surface finish ensures:

   • Complete valve-to-seat contact

   • Consistent compression retention

   • Minimized gas leakage

Technical Specifications:

• Material: High chromium alloy 

• Hardness: 40-45 HRC

• Temperature Range: -30°C to 850°C

• Concentricity: 99.4% minimum

• Surface Finish: Precision ground to 0.6μm Ra

Ideal Applications:

• Medium and heavy-duty trucking

• Vocational vehicles

• Bus and coach applications

• Industrial power units

• Agricultural equipment

Verified Performance Benefits:
Field testing demonstrates:
• 25-35% longer service intervals
• 3-5% improved fuel efficiency
• Reduced valve recession
• Lower maintenance costs

This Cummins M11 valve seat provides OEM-quality performance with enhanced durability for various operating conditions. Its balanced material composition offers reliable performance in both intake and exhaust positions, while the precision manufacturing ensures consistent sealing performance across all load conditions. The design effectively bridges the performance requirements between intake and exhaust applications in many M11 engine variants.

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.