2W8271 Arm A Fits Caterpillar Models
2W8271 Arm A Fits Caterpillar Models
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One New Aftermarket Replacement Rocker Arm (Arm A) for Caterpillar (Cat) Diesel Engines
This aftermarket replacement rocker arm (Caterpillar internal designation "Arm A", part number 2W8271) is a valvetrain component used in Caterpillar diesel engines. Rocker arms transfer motion from the camshaft to open and close intake and exhaust valves; worn or damaged rocker arms can cause valve sealing problems, increased oil consumption, and loss of engine performance. This part is commonly associated with the Caterpillar 3406 engine series, a heavy-duty inline six-cylinder diesel platform used across construction equipment, heavy trucks, agricultural machinery, and industrial power generation applications.
Compatible Engines
Caterpillar 3406 Series: 3406, 3406A, 3406B, 3406C, 3406E (verify engine serial number and arrangement against your parts manual before ordering)
Replaces Part Number(s):
2W8271, 9N5588, 0R2278, 9L6386, 9L9402
New aftermarket replacement part - not remanufactured, not used.
