Excavator Engine Valve Seat Replacement

CATERPILLAR Engine Parts
December 27, 2025
Video Description:
In this walkthrough, we highlight key design ideas and how they translate to performance. Watch as we demonstrate the proper replacement procedure for the CAT 3306 and 3304 diesel engine valve seats, part numbers 7N-4448 and 351-2460, specifically designed for the Excavator E330B. You'll see the correct installation techniques and learn how these intake and exhaust components ensure optimal engine operation.
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