Head As. 129-5500/198-7258/374-5231

Excavator Caterpillar M320, M322C, M322D, M322D M

Stick Cylinder Bore 140,00 Stroke 1.408,00 Hydraulic Cylinder

1295500/1987258/3745231

Compatible Brand: Caterpillar

Part Number: 374-5231 (3745231)

Superseded / Interchange Numbers: 129-5500 (1295500), 198-7258 (1987258)

Part Name: Excavator Stick Hydraulic Cylinder Head Assembly

Technical Specifications: Cylinder Application: Stick Cylinder / Cylinder Bore: 140.00 mm / Stroke: 1,408.00 mm / Weight: Not Specified (Heavy-Duty) / Hydraulic Cylinder Head Component

Compatible Machinery: Caterpillar Wheeled Excavators (M320, M322C, M322D, M322D MH series)

What It Does:

Serves as the hydraulic cylinder head assembly (gland) mounted on the stick cylinder of Caterpillar M320 and M322 series wheeled excavators. It seals the front end of the cylinder barrel while guiding and supporting the reciprocating movement of the piston rod. Housing precision rod seals, buffer rings, wiper seals, and wear bands, it retains high-pressure hydraulic fluid inside the cylinder and prevents external contamination.

Importance:

Essential for ensuring internal pressure containment, zero fluid leakage, and proper rod alignment under severe digging forces. Precision-machined from high-strength forged/solid steel, it withstands severe lateral loads, dynamic bending stress, and hydraulic pressure spikes during heavy trenching and material handling, while high-grade seal grooves prevent fluid bypass and extend total cylinder service life.

As Seçkin Makine, we manufacture this product as an aftermarket item fully equivalent to the original specifications in terms of raw materials, technical dimensions, and performance characteristics. This product comes with a 1-year warranty from the invoice date.