2666621 Gasket Kit Fits Caterpillar Models
2666621 Gasket Kit Fits Caterpillar Models
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One New Aftermarket Replacement Gasket Kit for Caterpillar (Cat) 3126B and 3126E Diesel Engines
This aftermarket gasket kit is designed for use on Caterpillar 3126B and 3126E diesel engines. The Cat 3126 is a 7.2L inline six-cylinder diesel engine widely used in medium-duty trucks, buses, and construction equipment. A gasket kit is an essential component for engine repair, overhaul, or rebuild work, providing the sealing components needed to maintain compression and prevent fluid and gas leaks throughout the engine assembly.
Compatible Models
Caterpillar 3100 Series Diesel Engines: 3126B, 3126E
The Caterpillar 3126B and 3126E engines were used across a wide range of on-highway trucks, school buses, city buses, and medium-duty construction and vocational equipment applications. Verify your engine serial number to confirm correct fitment before ordering.
Replaces Part Number(s):
2666621, 1622964
New aftermarket replacement part - not remanufactured, not used.



