CAT C15 C16 C18 3406E Cylinder Head 223-9250 | Loaded CGI Head with Inconel Valves

If you're rebuilding a Caterpillar C15, C16, C18, or 3406E, the cylinder head is not the place to cut corners. The 223-9250 Cylinder Head from Momentum Worx is built for customers who expect more than a basic stock replacement.

This head comes fully loaded and ready for installation, featuring premium Inconel valves for improved durability in high-heat, high-load applications. Whether your truck spends its life pulling heavy, running performance tuning, or stacking miles on the highway, Inconel offers superior resistance to heat fatigue compared to standard valve materials.

What really sets this head apart is its CGI (Compact Graphite Iron) construction. Compared to traditional cast iron, CGI offers increased strength, better thermal stability, and improved resistance to cracking—making it a serious upgrade for high-horsepower builds, towing applications, or anyone tired of weak factory castings.

Unlike remanufactured cylinder heads, this is a brand-new casting with all new components installed and assembled. Every cylinder head is precision machined, pressure tested, and inspected to ensure it is ready for installation right out of the box.

Built to fit a wide range of popular CAT applications, this 223-9250 cylinder head fits 3406E, C15, C16, and C18 engines and is backed by Momentum Worx’s 1-year warranty. Because when you're this deep into an engine build, the last thing you want is to do it twice.

Features:

• Fits CAT 3406E, C15, C16, and C18 engines
• OEM-style replacement: 223-9250
• Fully loaded assembly
• Premium Inconel valves for superior heat resistance
• CGI (Compact Graphite Iron) casting for added strength and durability
• Ideal for stock, heavy-haul, and performance applications
• Backed by a 1-year warranty

Built for guys who work their engines hard—and expect their parts to do the same.

Designed for Popular Caterpillar Engines

This cylinder head is designed to fit a wide range of Caterpillar diesel engines, including many configurations of:

• CAT C15
• CAT C15 ACERT
• CAT C16
• CAT C18
• CAT 3406E

Common applications include:

• Heavy-duty highway trucks
• Vocational trucks
• Construction equipment
• Agricultural equipment
• Industrial engines
• Generator engines
• Marine applications

Compatible with many popular Caterpillar engine serial number prefixes, including (verify your application before ordering):

• 6NZ
• 1LW
• 2WS
• MBN
• SDP
• BXS
• NXS
• MXS
• KCB
• JRE
• JEK

Why Choose CGI Construction?

Traditional gray cast iron cylinder heads are susceptible to cracking and fatigue under repeated heat cycles. This cylinder head utilizes Compacted Graphite Iron (CGI), a significantly stronger material that offers improved tensile strength, increased rigidity, and superior resistance to thermal stress.

Benefits of CGI construction include:

• Increased durability
• Better resistance to cracking
• Improved heat management
• Longer service life
• Excellent performance in high-horsepower and heavy-duty applications

Premium Inconel Exhaust Valves

This head is equipped with premium Inconel exhaust valves. Inconel is a high-nickel alloy specifically engineered to withstand extreme exhaust gas temperatures that would quickly damage conventional valve materials.

Advantages include:

• Excellent resistance to extreme heat
• Longer valve life
• Increased durability under heavy loads
• Improved reliability during towing and heavy hauling
• Ideal for performance, work, and commercial diesel engines

Ready to Install

This cylinder head arrives fully assembled and ready for installation, helping reduce downtime during your engine rebuild.

Included features:

Ideal for Complete Engine Rebuilds

If you're rebuilding a Caterpillar diesel engine, replacing a failed head gasket, repairing overheating damage, or installing new injectors and turbochargers, this loaded cylinder head is an excellent choice for restoring performance and reliability.

Popular companion products include:

• CAT fuel injectors
• CAT turbochargers
• CAT exhaust manifolds 
• Cylinder head bolt kits 
• Turbo installation hardware 
• Oil feed and drain line kits 

Replacing all related wear components during your rebuild helps maximize reliability while reducing future downtime.

OEM Part Number Cross Reference & Interchange

The Momentum Worx CAT 223-9250 Cylinder Head is a direct replacement for numerous Caterpillar® OEM cylinder heads and aftermarket equivalents. This loaded cylinder head is commonly referenced under the following part numbers and interchange numbers:

OEM & Reman Part Numbers

0R7594, 0R7595, 0R7637, 0R8628, 0R8881, 0R8883, 0R9535, 0R9536, 0R9537, 10R4359, 10R5984, 10R5985, 10R7658, 10R9547, 10R9548, 10R9549, 20R0409, 20R1107, 20R1108, 20R1109, 20R1183, 20R2645, 20R2646, 20R2647, 20R2648, 1329976, 1427339, 1427341, 1598655, 1604346, 1604347, 1616190, 1616191, 1769917, 1769918, 1835296, 1872110, 2221982, 2237263, 223-7263, 2239250, 223-9250, 2239250S1, 2239250IVS, 223-9250IVS, 223-9251, 2345985, 234-5985, 2352974, 235-2974, 2353178, 235-3178, 2430943, 243-0943, 2436741, 243-6741, 2439185, 243-9185, 2446893, 244-6893, 2454324, 245-4324, 2634890, 263-4890, 2634892, 263-4892, 2635054, 263-5054, 2635055, 263-5055, 2672060, 267-2060, 2672063, 267-2063, 2741953, 274-1953, 2778240, 2811640, 281-1640, 2950599, 295-0599, 2998342, 3123564, 3128347, 312-8347, 3128590, 312-8590, 3147316, 314-7316, 3180476, 318-0476, 3180504, 318-0504, 3250386, 3492652, 349-2652, 3980236, 4325470, 432-5470, 4325472, 432-5472, 4P5050, 5839493.

Common Aftermarket Interchange Numbers

MDD223-9250INSTALL, MDDC15HARDWAREKIT, HBRC15HBK, HBR6I4421, HBRN223-9250EVS, HBRN2239250EVS, MAG2486744, MAG2818261-6, MAGC15EXH001, FPDFP-2481394, FPDFP-2764637, DCWN2239250IVS, MCB2239250A, N223-9250, N2239250, N223-9250AVS, N2239250AVS, N223-9250EVS, N2239250EVS.

This premium loaded cylinder head is frequently searched under part numbers including 223-9250, 2239250, 20R2645, 20R2647, 245-4324, 263-5055, 318-0476, 318-0504, 274-1953, 281-1640, and 10R9547. If your existing Caterpillar cylinder head matches any of the interchange numbers listed above, this cylinder head is designed as a high-quality replacement. Always verify compatibility using your engine serial number before ordering.

Why Buy From Momentum Worx?

Momentum Worx specializes in premium heavy-duty diesel engine components built for professionals who expect reliability. Every cylinder head is carefully inspected before shipment and backed by knowledgeable technical support from a team that understands Caterpillar diesel engines.

Whether your truck works every day on the highway, pulls heavy loads, powers industrial equipment, or serves in marine or generator applications, this premium loaded cylinder head is built to deliver dependable performance for years to come.

***Ships Flat Rate Via Pallet - any other items added to your cart at checkout will allow you to choose expedited air shipping, this will NOT apply to the cylinder head.