1006694 Ring Top Fits Caterpillar Models
1006694 Ring Top Fits Caterpillar Models
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One New Aftermarket Replacement Piston Ring (Top / Compression) for Caterpillar (Cat) 3306 Series Engines
This aftermarket top compression piston ring is a direct replacement for Caterpillar (Cat) OEM part number 1006694. The top ring seats in the uppermost groove of the piston and forms the primary combustion seal in the Caterpillar 3306 and 3306C diesel engine. It is sold individually and is also available in packs of six for full engine rebuilds and in-frame overhaul applications.
Compatible Models
Caterpillar (Cat) 3300 Series Engines: 3306, 3306C
Note: The Caterpillar 3306 engine was used across a wide range of Cat construction, agricultural, and industrial equipment -- including excavators, motor graders, wheel loaders, dozers, scrapers, articulated trucks, and skid steer loaders. Verify your engine model and serial number before ordering to confirm fitment.
Replaces Part Number(s):
1006694, 100-6694
Aftermarket Interchange Numbers
PAI 305035, CAP305035
New aftermarket replacement part - not remanufactured, not used.



