✅ Compatibility

• Make: Caterpillar (CAT)
• Engine: Caterpillar S6K / 3066 — 6-cylinder liquid-cooled diesel
• OEM / Cross Reference Part Numbers:
  • Caterpillar: 1146864 / 114-6864 — 135-2361 / 1352361
• Fits Caterpillar Excavators (S6K / 3066 engine):
  • CAT 120B — CAT 200B — CAT 312B — CAT 320N
• ⚠️ Fitment Note: Verify CAT excavator model, serial number, engine model (S6K or 3066), and existing starter part number before ordering. Contact us to confirm fitment.

🔧 Product Highlights

• Direct OEM Replacement — CAT 1146864 / 135-2361 24V 10T 5kW Starter for Caterpillar S6K / 3066 Engine: Drop-in fit for CAT 120B / 200B / 312B / 320N excavators — matches original Caterpillar starter specifications for reliable 24V electric starting
• CAT 312B / 320N — Caterpillar’s Classic Mid-Size Hydraulic Excavators: Widely used by earthmoving contractors, civil engineers, and rental fleets globally — the CAT 312 and 320 series represent one of the largest installed bases in the global excavator market with strong aftermarket demand
• Caterpillar S6K / 3066 — CAT’s Classic 6-Cylinder Diesel Engine for Mid-Size Excavators: The S6K and 3066 power a wide range of classic CAT excavators — well-supported in the aftermarket with a large active installed base still in service globally
• 24V / 5kW — High-Output Starter for Heavy-Duty Excavator Starting Demands: 24V electrical system and 5kW cranking output ensure reliable cold-start and hot-start performance in demanding construction and rental fleet duty cycles
• Common Maintenance Item on High-Hours CAT 312B / 320N Excavators: Symptoms: slow cranking, grinding on engagement, or intermittent no-start — immediate replacement eliminates jobsite downtime

📦 What’s Included

• 1× Starter Motor 24V 10T 5kW — New Aftermarket (CAT 1146864 / 114-6864)

🔑 Key Specs

• Caterpillar Part Numbers: 1146864 / 114-6864 — 135-2361 / 1352361
• Voltage: 24V — Teeth: 10T — Power: 5kW
• Engine: Caterpillar S6K / 3066 — 6-cylinder liquid-cooled diesel
• Equipment: CAT 120B / 200B / 312B / 320N hydraulic excavators
• Condition: New Aftermarket — SKU: 1146864

⚠️ Verify CAT excavator model, serial number, and engine model (S6K or 3066) before purchasing. Contact us with machine model and S/N if unsure — we are happy to confirm fitment.