Caterpillar 3406E, C15, C15 ACERT Cylinder Head – 2239250 Stage 3

The 2239250 Stage 3 Cylinder Head is a premium heavy-duty aftermarket cylinder head built for Caterpillar 3406E, C15, C15 ACERT, C16, C18, and 3406E diesel engines. Designed for high-performance and heavy-haul applications, this fully loaded cylinder head is engineered to deliver improved durability, better cooling, and long-lasting reliability under demanding working conditions.

Built with upgraded castings containing 5% more nickel and 30% larger coolant passages, this cylinder head helps improve heat dissipation and reduce the risk of cracking commonly found in high-horsepower Caterpillar engines. It also comes equipped with premium Inconel intake and exhaust valves for superior resistance to extreme heat and heavy-duty operation.

Key Features & Benefits:
• Premium fully loaded aftermarket cylinder head
• Fits Caterpillar C15, C15 ACERT, C16, C18, and 3406E engines
• Upgraded heavy-duty casting designed for improved durability
• 5% higher nickel content for added strength and crack resistance
• 30% larger coolant passages for improved cooling performance
• Premium Inconel intake and exhaust valves for high-temperature applications
• Helps reduce cracking between valves compared to standard cylinder heads
• Ideal for high-horsepower, heavy-haul, towing, and performance applications
• Fully assembled and ready for installation
• Excellent option for engines running upgraded injectors, larger turbochargers, or performance components
• Designed to improve engine reliability and reduce downtime
• No core charge required on most applications

Compatible Applications:
• Caterpillar C15
• Caterpillar C15 ACERT
• Caterpillar C16
• Caterpillar C18
• Caterpillar 3406E

Common Replacement Part Numbers:
2635055, 2454324, 20R2645, 2239250