Parking Brake Switch 421-S33-3282 Fits for Komatsu WA500-6 WA200-6 WA320-6 WA380-6 WA470-6 WD600-6

Parking Brake Switch 421-S33-3282 – Replacement for Komatsu WA500-6 WA200-6 WA320-6 WA380-6 WA470-6 WD600-6

Aftermarket parking brake switch engineered for reliable brake engagement signaling and consistent operator safety system performance in Komatsu wheel loader and dozer applications. Precision-manufactured components ensure drop-in compatibility with correct fitment.

Technical Specifications

• Part Numbers: 421-S33-3282, 421S333282
• Condition: New, aftermarket replacement
• Function: Detects and signals parking brake engagement status to the machine control system, enabling operator alerts, transmission interlocks, and safety system responses across Komatsu WA-series wheel loader and WD-series dozer applications

Equipment Compatibility

Note: Compatibility is provided for reference. Please verify against your part number before ordering.

Fits the Following Applications:

• Komatsu Loader: WA600-6, WA500-6, WA100-5, WA100-5-CN, WA100-5-SN, WA100-5-SS, WA100-5-TK, WA100M-3, WA100M-3-CB, WA100M-3-CN, WA1200-6, WA150-5, WA150-5-A, WA150-5-CN, WA150-5-SS, WA150-5-TK, WA150-6, WA150L-5, WA150PZ-5, WA150PZ-6, WA200-5, WA200-5L, WA200-5-SN, WA200-5-SS, WA200-6, WA200L-5, WA200PT-5, WA200PT-5L, WA200PTL-5, WA200PZ-6, WA250-5, WA250-5L, WA250-6, WA250L-5, WA250PT-5, WA250PT-5L, WA250PTL-5, WA250PZ-5, WA250PZ-6, WA30-5, WA30-5-CB, WA30-5-CN, WA320-5, WA320-5L, WA320-6, WA320-6N, WA320L-5, WA320PT-5L, WA320PZ-6, WA380-5, WA380-6, WA400-5, WA40-3, WA40-3-CB, WA40-3-CN, WA430-6, WA430-6E0, WA450-6, WA470-5, WA470-6, WA470-6 LC, WA470-6A, WA470-6R, WA480-5, WA480-6, WA480-6 LC, WA500-6R, WA50-3, WA50-3-CB, WA50-3-CN, WA50-6, WA600-6R, WA800-3, WA800-3E0, WA80-3, WA80-3-CB, WA80-3-CN, WA80-3-SW
• Komatsu Dozer: WD600-6, WD600-6R

Why Choose This Parking Brake Switch

The parking brake switch is a critical safety and control component in your Komatsu wheel loader or dozer — it communicates parking brake status to the machine’s control system to enforce transmission interlocks, trigger operator warnings, and ensure the machine cannot be driven with the parking brake engaged. A failed or faulty parking brake switch results in fault codes, disabled safety interlocks, and potential regulatory non-compliance that can ground equipment on active job sites. This replacement unit delivers:

• Reliable brake status signaling – Engineered to meet the switching characteristics, connector, and signal output specifications of Komatsu WA-series wheel loader and WD-series dozer brake control systems
• Exact-fit installation – Direct replacement with correct connector type, thread or mounting configuration, and electrical interface to match Komatsu loader and dozer specifications without modification
• Durable construction – Built to withstand vibration, dust, moisture, and the continuous duty demands of Komatsu wheel loader and dozer operation in quarry, mining, and construction environments
• Cost-effective solution – Aftermarket quality at a fraction of dealer pricing

Package Contents

• 1 × Parking Brake Switch 421-S33-3282

Essential for Komatsu WA200-6, WA320-6, WA380-6, WA470-6, WA500-6, WD600-6, and related wheel loader and dozer parking brake system maintenance and switch replacement. Keep your Komatsu equipment delivering reliable safety system performance on every shift.