1278205 Injector G Fits Caterpillar Models

One New Aftermarket Replacement Fuel Injector (Injector Gp) for Caterpillar (Cat) 3114, 3116, and 3126 Engines

This aftermarket replacement fuel injector fits Caterpillar (Cat) engines 3114, 3116, and 3126, and is used across a wide range of Cat construction and industrial equipment. The injector delivers precisely metered, atomized diesel fuel directly into the combustion chamber, supporting efficient combustion, power output, and emissions control. Replaces OEM part number 127-8205 (1278205), also commonly referenced as Injector Gp or Injector Group.

Compatible Models

Caterpillar Engines: 3114, 3116, 3126, 3126B

Caterpillar Excavators: 320B, 322B, 322B L, 322B LN, 322C, 322C FM, 325B, 325B L

Caterpillar Wheeled Excavators: M318, M320, M325B

Caterpillar Wheel Loaders: 910E, 910F, 924F, 928G, 938F, 938G, 950F, 950F II

Caterpillar Integrated Toolcarriers: IT12B, IT14F, IT24F, IT28G, IT38F, IT38G

Caterpillar Backhoe Loaders: 446B, 446D

Caterpillar Track Loaders: 953C, 963B, 963C

Caterpillar Track-Type Tractors: D5M, D6M

Caterpillar Motor Graders: 120H, 120H ES, 120H NA, 135H, 135H NA

Caterpillar Asphalt Pavers: AP-1000, AP-1000B, AP-1055B, AP-900B, BG-2455C, BG-245C

Caterpillar Vibratory Compactors: CB-634C, CB-634D, CP-563, CS-531C, CS-531D, CS-533C, CS-533D, CS-563C, CS-563D, CS-573C, CS-573D, CS-583, CS-583C, CS-583D

Caterpillar Knuckleboom Loader: 539

Caterpillar Pipelayer: 561M

Caterpillar Wheel Tractor: 613C II

Replaces Part Number(s):

127-8205, 1278205, CA1278205

Aftermarket Interchange Numbers

0R-8479, 0R8479, 0R-8682, 0R8682, 127-8213, 1278213, 127-8216, 1278216, 127-8222, 1278222, 107-7732, 1077732

New aftermarket replacement part - not remanufactured, not used.