1979277 Ring-Int Piston Fits Caterpillar Models

One New Aftermarket Replacement Intermediate Piston Ring for Caterpillar (Cat) 3114 / 3116 / 3126 / C7 / C7.1 Engines

This aftermarket replacement intermediate (center) piston ring is engineered for Caterpillar 3100-series and C7 family diesel engines. The intermediate ring seats between the top compression ring and the oil control ring, playing a critical role in sealing combustion gases and controlling oil consumption. Proper fitment of this ring is essential to maintaining engine compression and long-term performance in demanding construction, agricultural, and on-highway applications.

Specifications

• Ring Position: Intermediate (center compression ring)
• Piston Bore Size: 110 mm (standard)
• Ring Width: approximately 3 mm
• Dimensions: approximately 6.1 x 6.1 x 0.39 in.

Compatible Models

Caterpillar Engine Families: 3114, 3116, 3126, 3126B, 3126E, C7, C7.1

Caterpillar Challenger: 35, 45, 55

Caterpillar Excavators: 322C, 322C FM, 325C, 325C FM, 325C L, M325C MH

Caterpillar Motor Graders: 120H, 135H

Caterpillar Track-Type Tractors: D5N, D6N

Caterpillar Wheel-Type Loaders: 924G, 938G, 938G II, 950G, 950G II, 962G, 962G II

Caterpillar Integrated Toolcarriers: IT38G, IT38G II, IT62G, IT62G II

Caterpillar Wheel-Type Skidders: 525B, 535B

Caterpillar Track-Type Loaders: 953C, 963C

Caterpillar Pipelayers: 561N

Caterpillar Combines: 460, 465, 470

Caterpillar Forest Products: 322C, 533, 539, 543, 550, 570, 570B, 574, 580, 580B, TK370, TK371, TK380, TK381

Caterpillar Marine / Petroleum / Industrial: 3126B, C7, SPP101

Caterpillar Engineer Support Tractor: 30/30 DEUCE

Replaces Part Number(s):

1979277, 197-9277, 1077630, 107-7630, H1979277

Aftermarket Interchange Numbers

Interstate-McBee: M-1979277, M-1077630 | PAI: 305057 | Also cross-references OEM number 1979353 and 1979354 (same ring position, same engine family)

New aftermarket replacement part - not remanufactured, not used.