Cat C9 Water Pump 3522123 – 330C, 330D, 336D, 336D2, 340D Excavators, 500-Series Fellers

Fits Models At A Glance:

• Caterpillar Excavators: 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 340D L, 340D2 L
• Caterpillar Track Feller Bunchers / Harvesters: 511, 521, 521B, 522, 522B, 532, 541, 551, 552, 2290, 2390, 2391, 2491, 2590

Key Notes:

• Part Number(s): 3522123 (352-2123)
• Weight: 24.80 lbs (11.25 kg)
• Application: Engine water pump assembly for the Cat C9 / C-9 engine
• Interchange Numbers: 3522125, 3522109, 2194452, 2036094, 2278843; Cat Reman 10R8655
• Serial Number Notes: Engine-matched to the C9. Costex catalogs both 3522123 and 3522125 for these machines — sellers treat them as interchangeable; confirm the number on your old pump.
• Shipping Restrictions: Ships UPS Ground
• Condition: Aftermarket replacement part

Common Use Case or Symptoms:

Use when coolant weeps from the pump, the bearing growls, or a 330D or 336D runs hot under load with a clean radiator.

Why Choose Broken Tractor:

• ✅ C9 pump for excavators and forestry machines — One water pump covers 30 Cat machines from the 330C to the 2590 feller buncher.
• ✅ Every cross-reference listed — Six Cat numbers and the Reman number so any parts book lands here.
• ✅ Fast Shipping from a U.S.-Based Team — ready to ship from our U.S. warehouses.