The Caterpillar 8N1187 cylinder head is designed for the Cat 3306PC / D333C 10.5L inline-6 direct injection diesel engine. This heavy-duty cast iron component delivers reliable performance for bulldozers, wheel loaders, excavators, and industrial power applications.
Quick Specifications:
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Part Number: 8N1187 / 8N-1187
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Engine: Caterpillar 3306 / 3306B / 3306PC / D333C
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Displacement: 10.5 L (638 cu in)
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Configuration: Inline-6, 2 valves per cylinder
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Fuel System: Direct Injection (DI)
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Material: Cast Iron
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Weight: ~95 kg (209 lbs)
Applications:
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Caterpillar D333C / D343 Bulldozers
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Caterpillar 966C / 966D Wheel Loaders
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Caterpillar 225 / 235 Excavators
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Industrial generator sets & power units
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Marine auxiliary and agricultural equipment
Key Features:
✅ OEM-spec cast iron construction for maximum durability
✅ Precision machined for proper fit and combustion sealing
✅ Compatible with 3306PC direct injection fuel system
✅ Available as bare head or complete with valves/springs
✅ Quality tested with inspection certification