5L4949 Lock Nut for Caterpillar Equipment

The 5L4949 is a nylon locknut used on Caterpillar equipment, including Caterpillar gas engines, generator set engines, industrial engines, and marine engines. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The supplied application data identifies the part for engine models in the G379, G398, G399, D379, D398, and D399 series. The listed applications are separated below by equipment type to distinguish the engine configurations stated in the available data.

Fitment

• Gas engines: Caterpillar G379, G398, G399
• Generator set engines: Caterpillar D379B, D398B, D399
• Industrial engines: Caterpillar D379, D398, D399
• Marine engines: Caterpillar D379A, D398A

The fitment information applies to the Caterpillar engine models listed above. No additional machine models or equipment series are included in the available product data.

Specifications

The dimensions and weight above are reproduced from the available product data. The supplied data identifies them only as length, width, depth, and weight; it does not specify whether these measurements refer to the individual nut, packaging, or a shipping unit.