Komatsu Excavator Mirror 421-54-25610 and Float Switch 7861-92-4800 Premium Replacement

Reliable China OEM Quality Solutions for Heavy Construction Machinery Performance

Factory Direct Sale: Customized Engine Cylinder Liners for:
Komatsu PC200-8 Liner | Caterpillar 320D Liner | Isuzu 4HK1 Liner | Yanmar 4TNV98 Liner
Source Manufacturer - Global Export - Customized Development Available

Optimize Your Komatsu Performance with Part 421-54-25610 and 7861-92-4800

Are you facing visibility issues or fuel sensor errors in your Komatsu equipment? Honour Time Machinery Limited provides the ultimate solution. Our Komatsu Mirror 421-54-25610 (4215425610) offers crystal clear visibility for safety on site, while the Komatsu Float Switch 7861-92-4800 (7861924800) ensures precise fuel and liquid level monitoring, resolving common sensor failure alarms in Komatsu PC series excavators.

Key Product Features

  • Engineered for high-vibration construction environments.

  • Direct fit for Komatsu PC200, PC220, and PC300 models.

  • Corrosion-resistant materials for extended service life in harsh climates.

  • Precise OE specifications for easy installation and maintenance.

  • Cost-effective high-quality alternative to original parts with guaranteed performance.

Product Specifications Table

AttributeDetails
Model NO.421-54-25610, 4215425610 / 7861-92-4800, 7861924800
ApplicationExcavator, Bulldozer, Wheel Loader
CertificationISO9001 / OEM Standard
Condition100% Brand New High Quality Replacement
Product NameRearview Mirror / Liquid Level Float Switch
Transport PackageNeutral Carton or Customized Wood Case
OriginChina Manufacturer
Production Capacity5000 PCS Per Year
Payment TermsT/T, Western Union, MoneyGram
Delivery MethodsExpress (DHL, Fedex, UPS), Air Freight, Sea Freight

Global Engine Parts Coverage

We specialize in Engine Rebuild KitsCylinder Blocks, and Crankshafts for top brands including Caterpillar, Cummins, Isuzu, Kubota, Yanmar, and Weichai.

BrandSupported Models / Engine Series
Komatsu3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170
KOBELCOJ05E, 6D34T, 6D16, J08E, 6D22T, 6D24T, 6D16T, 6D34
CATERPILLAR3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13
Mitsubishi4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40
ISUZU3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1
Yanmar4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106
HINOJ05E, J08E, V25C, EF750, P11C, V21C, H06CT, H07D
CUMMINSQSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C
VOLVOD6D, D6E, D9E, D12D, D7D, D7E, D12E, D16D

Technical Glossary & Component Locations

  1. Cylinder Liner: Installed in the Engine Block (e.g., Komatsu PC200-8 6D107 engine). It provides the sliding surface for the piston.

  2. Turbocharger: Mounted on the Exhaust Manifold (e.g., Caterpillar 320D C6.4 engine). Increases engine power by forcing air into the combustion chamber.

  3. Main Bearing: Located inside the Crankcase (e.g., Isuzu 4HK1 engine). Supports the crankshaft and ensures smooth rotation.

  4. Fuel Injector: Fitted in the Cylinder Head (e.g., Cummins QSB6.7 engine). Delivers high-pressure fuel into the cylinder.

  5. Water Pump: Attached to the front of the Engine Block (e.g., Yanmar 4TNV98 engine). Circulates coolant to prevent overheating.

  6. Oil Pump: Usually driven by the crankshaft (e.g., Kubota V2403 engine). Lubricates moving engine parts to reduce friction.

  7. Solenoid Valve: Located on the Hydraulic Pump or Fuel System (e.g., Komatsu PC300-7). Controls the flow of fluids or fuel shut-off.

  8. Radiator: Situated at the front or rear cooling group (e.g., Volvo EC210B). Dissipates heat from the engine coolant.

  9. Accelerator Motor: Found near the engine throttle linkage (e.g., Isuzu 6HK1). Controls the engine RPM based on operator input.

  10. Gasket Head: Sandwiched between the cylinder head and block (e.g., Weichai WD10). Seals the combustion chamber and fluid passages.

Case Study: Troubleshooting & Maintenance

Case: Engine Overheating in Komatsu PC200-8
Issue: The excavator displayed an overheating alarm after 2 hours of operation.
Solution: Inspection revealed a clogged Radiator and a leaking Water Pump. After replacing with Honour Time Machinery high-quality parts and flushing the coolant system, the operating temperature returned to normal.
Maintenance Tip: Always check your Fan Cooling belts and Thermostat every 500 hours to avoid catastrophic engine failure.

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Honour Time Machinery Limited is a leading exporter of premium engine parts for world-class machinery brands. We specialize in high-precision liners, pistons, and complete overhaul kits, ensuring global construction projects keep moving with reliability and excellence.


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