Caterpillar 338-9809 Crankshaft Vibration Damper / Harmonic Balancer

The Caterpillar 338-9809 Crankshaft Vibration Damper is designed to absorb and reduce harmful torsional vibrations generated by the engine crankshaft. Proper vibration control helps protect the crankshaft, engine components, and accessory drive system while supporting smooth and reliable engine operation.

This cast-iron vibration damper is manufactured to Caterpillar specifications for durability and dependable performance in heavy-duty diesel applications. Part number 338-9809 is used on Caterpillar C7, 3116, 3126, 3126B, and 3126E truck engines.

Features:

• Caterpillar OEM part number: 338-9809
• Cast-iron crankshaft vibration damper
• Helps reduce crankshaft torsional vibration
• Designed for heavy-duty diesel engine applications
• Factory-fit Caterpillar component
• Built for durability and long service life

Compatible Caterpillar Engines:

• C7
• 3116
• 3126
• 3126B
• 3126E

Cross-Reference / Related Part Numbers: 10R-0706, 4P-7378, 167-8121, 208-9619

Always verify the part number and engine configuration before ordering to ensure proper fitment.