2N2839 Spark Plug for Caterpillar Equipment

This spark plug is used in Caterpillar industrial engines, generator sets, truck engines, and related power-system equipment. The listed applications include Caterpillar G-series gas engines, CG-series engines, D379-family engines, SR4 generator equipment, and specified generator-set configurations. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the SKU 2N2839 and is used as a standard plug application for the Caterpillar G3408 engine in configurations with 9.4:1 and 10.3:1 compression ratios. The electrode gap requires setting during installation according to the applicable engine service specifications.

Fitment

The part is listed for the following Caterpillar equipment and engine applications:

• Generator equipment
• SR4 generator systems
• Industrial engines
• Engine-generator sets
• Power systems
• Truck engines
• CG137-08 engine
• CG137-12 engine
• D379 engine
• D379B engine
• G3304 engine
• G3304B engine
• G3306 engine
• G3306B engine
• G333C engine
• G3406 engine
• G3408 engine
• G3412 engine
• G343 engine
• G3616 engine
• G379 engine
• G379A engine
• XQG135 generator set
• XQG400 generator set

For engine-generator-set applications, the listed equipment includes Caterpillar CG137-12, D379B, and G3406 engines, as well as SR4, XQG135, XQG400, and power-system configurations. For truck-engine applications, the listed model is Caterpillar G3306.

Cross-reference numbers

The number 2N2839 and the hyphenated designation 2N-2839 refer to the same part-number format used for this spark plug.

Specifications