423-926-4781 Front Wiper Arm Assembly for Komatsu WA380-6, WA430-6, WA470-6, WA480-6

   The 423-926-4781 is a precision-manufactured wiper arm that connects the wiper motor to the blade. It utilizes a high-tension internal spring to ensure the wiper blade stays flat against the windshield during high-speed travel and heavy gusts. Its robust metal construction prevents the arm from bending or warping under the weight of wet snow or thick mud, which is vital for safety in mining and construction sites.

The SPARKLING MACHINERY NEW 423-926-4781 Wiper Arm Photo:

Why Choose the SPARKLING 423-926-4781 Wiper Arm?

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •    - Superior Blade Tension: Features a reinforced spring mechanism that prevents "blade lift" at high wind speeds or during fast machine movement.

                                                                      •    - Corrosion Resistance: Coated with a matte black, non-reflective finish that resists salt, chemicals, and UV exposure while reducing glare for the operator.

                                                                      •    - Wide Compatibility: One part fits almost the entire range of medium-to-large Komatsu Dash-6, Dash-7, and Dash-8 loaders, simplifying fleet inventory.

                                                                      •    - Easy Installation: Designed for a direct fit onto the factory wiper motor shaft, allowing for quick field replacement to minimize machine downtime.

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Q&A Section

Q1: Why is my wiper arm skipping across the glass even with a new blade?

A: This is often a sign of a fatigued internal spring in the 423-926-4781. If the spring loses tension, it cannot provide enough "downforce" to keep the blade pinned to the glass, causing it to chatter or skip.

Q2: Does this part number include the wiper blade and the nozzle?

A: Generally, the 423-926-4781 refers to the metal arm assembly only. The wiper blade and the washer fluid spray nozzle are typically separate components, though some aftermarket kits may include them.

Q3: Can I use this arm on the rear window?

A: While the mounting point may be similar, rear wiper arms often have different lengths and bend angles. Always verify your parts manual; the 423-926-4781 is primarily specified for the front main windshield.

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   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

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