3N4866 O-Ring Seal for Caterpillar Equipment

3N4866 is an O-ring seal used in Caterpillar equipment for axial or radial sealing applications. It is intended to help prevent leakage and contamination at the sealed connection. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The seal is listed for the following Caterpillar equipment applications and models:

• Engine and generator kit:
  • 3406
  • 3406B
  • 3406C
  • SR4
• Ship equipment:
  • 3406
  • 3406B
  • 3408
  • 3408B
  • 3412
  • D343
  • D353C
  • D353D
  • D353E
• Industrial engine:
  • 3406
  • 3406B
  • 3406C
  • 3406E
  • 3412
  • G3406
• Generator:
  • SR4

The listed fitment covers Caterpillar engine, generator, industrial engine, and ship equipment applications. The same O-ring designation is used across several equipment groups, including the 3406, 3406B, 3406C, 3412, and SR4 applications. Model identification should be checked against the equipment configuration and the seal location before installation.

Cross-reference numbers

3N-4866 and 3N4866 identify the same O-ring seal designation in hyphenated and non-hyphenated formats. The product SKU is 3N4866.

Specifications

The supplied dimensions are the product package or item dimensions listed for this part: 3 cm in length, 3 cm in width, and 0.3 cm in depth. The stated weight is 0.1 lb. No additional material specification, hardness rating, internal diameter, cross-section diameter, or installation kit contents are specified for this O-ring.