7N1220 Plunger A for Caterpillar Equipment

7N1220 Plunger A is a fuel injection system component used in high-pressure fuel pumps on Caterpillar equipment. The plunger is associated with the pump’s fuel delivery function, supplying fuel toward the engine cylinders during pump operation. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is listed for Caterpillar wheel-type loaders, track-type loaders, motor graders, industrial engines, truck engines, marine engines, and engine-generator sets. The equipment manufacturer brand applicable to this part is Caterpillar.

Fitment

• Wheel-type loader: Caterpillar 980C
• Industrial engine: Caterpillar 3406
• Industrial engine: Caterpillar 3406B
• Marine product: Caterpillar 3406
• Engine-generator set: Caterpillar 3406SR4
• Motor grader: Caterpillar 16G
• Track-type loader: Caterpillar 983B
• Truck engine: Caterpillar 3406

Fitment is specified by the equipment and engine applications listed above. The same 3406 engine designation appears in the industrial engine, marine product, and truck engine applications in the available catalog data.

Cross-reference numbers

7N1220 and 7N-1220 are the two catalog formats provided for the same part number. The available product data does not specify additional supplier numbers or other equipment-manufacturer numbers.

Specifications

The dimensional values are reproduced from the available catalog information. The source data lists length in both inches and centimeters; these values are retained as separate catalog specifications and are not recalculated.

Application details

• The component belongs to the fuel injection system category.
• Its listed pump application is a high-pressure fuel pump.
• The part is identified as a plunger rather than a complete fuel pump assembly.
• The available data does not indicate that additional seals, springs, delivery valves, or other pump components are included.
• The available data does not specify a mounting position, thread type, material, coating, or individual replacement procedure.