4L9851 Engine Air Filter for Caterpillar Equipment

The 4L9851 is a main engine air filter with a radial seal, used in Caterpillar engine, generator, ship equipment, and industrial engine applications. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The filter is identified by the part number formats 4L9851 and 4L-9851. The available application data covers Caterpillar 3304, 3304B, 3306, 3306B, D320A, D330A, D330B, D330C, D333C, G3304, G3306, and G333C equipment, subject to the application category listed below.

Fitment

• Engine and generator kit applications:
  • Caterpillar 3304
  • Caterpillar 3304B
• Ship equipment applications:
  • Caterpillar 3304
  • Caterpillar 3304B
  • Caterpillar D330A
  • Caterpillar D330B
  • Caterpillar D330C
• Industrial engine applications:
  • Caterpillar 3304
  • Caterpillar 3304B
  • Caterpillar 3306
  • Caterpillar 3306B
  • Caterpillar D320A
  • Caterpillar D330C
  • Caterpillar D333C
  • Caterpillar G3304
  • Caterpillar G3306
  • Caterpillar G333C

The listed fitment includes both engine models and equipment applications. Model availability differs by application category: 3304 and 3304B are listed for engine and generator kit use; 3304, 3304B, D330A, D330B, and D330C are listed for ship equipment; and 3304, 3304B, 3306, 3306B, D320A, D330C, D333C, G3304, G3306, and G333C are listed for industrial engine use.

Cross-reference numbers

• 4L9851
• 4L-9851

These two numbers represent the same product identification with different formatting. The SKU for this part is 4L9851.

Specifications