3508B Set:

---Valve guide oem: 1976995 / 1339306 (material:Alloy cast iron)

---Intake valve seat oem:1302607(material:High chromium alloy)

---Exhaust valve seat oem:1302608(material:High chromium alloy)

Precision-engineered for Caterpillar's 3508B industrial engine platform, these OEM-specified valve seats (#1302607 intake / #1302608 exhaust) deliver exceptional durability and thermal management in continuous-duty applications. These mission-critical components maintain perfect valve-to-seat contact under extreme operating conditions, ensuring optimal combustion efficiency throughout extended service intervals.

Advanced Material Technology:

The exhaust valve seat (1302608) features a proprietary nickel-chromium-tungsten alloy matrix specifically formulated to withstand sustained 900°C (1652°F) exhaust gas temperatures while resisting thermal cracking and oxidation. The intake seat (1302607) utilizes a copper-beryllium composite that combines superior heat transfer properties with excellent machinability for precision surface finishes.

Performance Advantages:

1. Extended Service Life - The exhaust seat's multi-phase alloy structure demonstrates 50% greater wear resistance than standard materials in high-hour power generation and marine applications.

2. Enhanced Thermal Stability - The intake seat's copper matrix provides:

   • 30% better heat dissipation than conventional iron seats

   • Reduced hot spotting

   • More stable valve clearances during thermal cycling

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

   • Complete 360° valve contact

   • Consistent compression ratios

   • Minimized blow-by across all load conditions

Technical Specifications:

• Exhaust Seat Material: Ni-Cr-W-Mo superalloy

• Intake Seat Material: Cu-Be-Fe composite

• Hardness: 50-54 HRC (exhaust), 40-44 HRC (intake)

• Temperature Range: -50°C to 950°C (exhaust)

• Concentricity: 99.7% minimum

Critical Applications Include:

• Continuous-duty power generation

• Marine propulsion systems

• Offshore oil and gas operations

• Mining and heavy construction

• Industrial pumping applications

Verified Operational Benefits:
Field testing demonstrates:
• 35-40% longer valve service intervals
• 5-7% improved fuel efficiency through superior sealing
• Reduced cylinder head temperatures in turbocharged configurations
• Lower total cost of ownership through extended overhaul periods

These Caterpillar 3508B valve seats represent the pinnacle of materials engineering for severe-service applications. Available in standard configurations with options for oversized repairs or performance enhancements, they deliver OEM-equivalent reliability with the durability demanded by 24/7 industrial operations. The exhaust seat's tungsten-enhanced alloy matrix provides exceptional protection against the extreme temperatures encountered in turbocharged and aftercooled 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.