Komatsu

The Komatsu 742953C1 is a genuine OEM rotary pump parts kit (cataloged under National Stock Number NSN 4320-01-178-3033) engineered for industrial and heavy-duty hydraulic steering systems. This professional rebuild and repair kit contains the essential high-grade sealing components, O-rings, and internal wear elements needed to restore the volumetric efficiency of a worn rotary pump unit. Fabricated from advanced, fluid-inert fluorocarbon elastomers and specialized backing rings, each piece in the kit is designed to withstand continuous operating system pressures and aggressive mechanical shear forces without fragmenting. Weighing approximately 1.10 lbs and distributed in a heavy-duty defensive protective pack, this service array prevents system pressure loss, fixes internal fluid bypass issues, and restores smooth tracking controls on large industrial equipment. Utilizing an authentic Komatsu factory rotary pump kit guarantees full micro-dimensional compatibility with original pump bores, preventing premature seal blowout and eliminating unexpected fluid-induction drops.

Specifications: 
&ndash; Part Number: 742953C1 
&ndash; National Stock Number (NSN): 4320-01-178-3033 
&ndash; Brand: Komatsu (Original OEM) 
&ndash; Component Type: Rotary Pump Parts Kit / Steering Pump Seal Rebuild Array 
&ndash; Length: 6.5 in 
&ndash; Width: 5.0 in 
&ndash; Height: 1.5 in 
&ndash; Weight: 17.55 lb (7.98&nbsp;kg) 
&ndash; Primary Elastomer Base: High-Performance Viton / Hydrogenated Nitrile (HNBR) 
&ndash; Condition: New Genuine 
&ndash; Shipment: Non-Hazardous (Standard Parcel)

Product Details: 
&ndash; Military &amp; NSN Integrity: Pre-qualified under standard 4320-01-178-3033 procurement paths for severe-duty logistics configurations. 
&ndash; Thermal-Shock Fluid Seals: Materials formulated to hold elastic memory under extreme multi-seasonal heat cycles and fluid spikes. 
&ndash; Complete Overhaul Components: Includes precision sealing rings, friction gaskets, and internal isolation elements required for full pump renewal. 
&ndash; Dynamic Pressure Handling: Seals engineered to resist deformation or extraction under intense backpressure pulses.

Applications: 
&ndash; Hydraulic Pump Servicing: Used to reconstruct and restore leaky or underperforming main steering and gear-driven rotary pumps. 
&ndash; Preventive Maintenance: Replaces micro-worn seals during mandatory mid-life powertrain and hydraulic fluid filter service actions. 
&ndash; Compatible Machinery: Extensively deployed across Komatsu industrial machine families, heavy material-handling machinery, and tactical configurations utilizing direct-drive steering pumps.

Key Features: 
&ndash; True Komatsu Certification: Eradicates the dimensional defects, poor seal tracking, and premature hardening typical of cheap generic rebuild kits. 
&ndash; Stops Internal Fluid Bypass: Re-establishes pristine fluid compression boundaries to guarantee consistent operator steering wheel response. 
&ndash; Chemical &amp; Detergent Defense: Resistant to high-additive hydraulic fluids, synthetic gear oils, and aggressive engine compartment degreasers. 
&ndash; Extends Pump Lifecycle: Saves thousands of dollars in component asset costs by rebuilding the original heavy steel pump housing rather than completely replacing it.

Order the genuine Komatsu 742953C1 Rotary Pump Parts Kit (NSN 4320-01-178-3033). Premium  17.55 lb hydraulic sealing and rebuild kit for steering pumps. OEM Quality.

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Komatsu 742953C1 Rotary Pump Repair Kit

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