3N5991 Thermocouple for Caterpillar Equipment

The 3N5991 is a thermocouple used on Caterpillar equipment, including cold planers, generator set engines, industrial engines, marine engines, and vehicular engines. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The listed applications cover several Caterpillar equipment and engine configurations. The part number 3N5991 is associated with the equipment and engine models specified below.

Fitment

• Caterpillar COLD PLANER PR-1000
• Caterpillar GEN SET ENGINE 3512
• Caterpillar INDUSTRIAL ENGINE 3406
• Caterpillar INDUSTRIAL ENGINE 3408
• Caterpillar INDUSTRIAL ENGINE 3412
• Caterpillar INDUSTRIAL ENGINE 3512
• Caterpillar INDUSTRIAL ENGINE D348
• Caterpillar INDUSTRIAL ENGINE D379
• Caterpillar MARINE ENGINE 3406
• Caterpillar MARINE ENGINE 3408
• Caterpillar MARINE ENGINE 3512
• Caterpillar MARINE ENGINE D348
• Caterpillar MARINE ENGINE D353C
• Caterpillar VEHICULAR ENGINE 3512

The fitment list includes both complete machine applications and engine series. Before installation, the equipment model and engine configuration should be checked against the existing part number 3N5991.

Specifications

The dimensions provided for the 3N5991 thermocouple are 14 cm in length, 14 cm in width, and 10 cm in depth. The listed weight is 0.5 lb. No additional information about thread type, material, connector design, mounting position, or included components is specified for this part.