1M9968 Bushing-Center Fits Caterpillar Models

One New Aftermarket Replacement Center Bushing for Caterpillar (Cat) Equipment

This copper/bronze center bushing (also listed as a center bearing bushing) is used in Delco/Delco Remy 35MT, 40MT, and 50MT starters found across a wide range of Caterpillar construction, generator, and gas engine applications. The bushing supports the armature shaft at the center position within the starter motor housing, maintaining proper alignment for reliable cranking performance.

Specifications

• Material: Copper/Bronze
• Inner Diameter: 0.83 in / 21.08 mm
• Outer Diameter: 0.96 in / 24.49 mm
• Width: 1.25 in / 31.83 mm
• Application: Starter motor center bearing position (Delco 35MT, 40MT, 50MT series)

Compatible Models

Caterpillar Articulated Trucks: D250B, D25C, D300B, D30C, D350C, D35C, 725, 725C, 730, 730C, 735, 735B, 740, 740B, D350E II, D400E II, D44B, D550B

Caterpillar Cold Planers: PM-200, PM-201, PM-565, PM-565B, PR-1000, PR-450, PR-450C, PR-750B

Caterpillar Excavators: 215, 225, 235, 235D, 245, 330, 330 L, 330B L, 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D2 L, 345B, 345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 349D, 349D L, 349E, 349E L, 349F L, 365B, 365B II, 365B L, 365C, 365C L, 374D L, 374F L, 375, 375 L, 385B, 385C, 385C FS, 385C L, 390D, 390D L, 390F L

Caterpillar Front Shovels: 385C, 5080, 5090B

Caterpillar Motor Graders: 12E, 12M 2, 12M 3, 12M 3 AWD, 120M, 120M 2, 140G, 140M, 140M 2, 140M 3, 140M 3 AWD, 14H, 14M, 16, 160M, 160M 2, 160M 3, 160M 3 AWD

Caterpillar Engines (Gas and Gen Set): 3304, 3306, 3406, 3406B, 3406C, 3408, 3408B, 3408C, 3412, 3412C, 3456, 3508, 3512, 3512B, 3516, 3516B, C-12, D379B, G3304, G3406, G3408, G3408B, G3408C, G3412, G3508, G3512, G3516, G3520B, G3606, G3606B, G3608, G379, G398, G399, GEN SET ENGINE 3304, 3306, 3406, 3412, 3516

Caterpillar Ejector and Other Trucks: 1090, 1140, 1150, 1160, 1190, 1190T, 1290T, 1390, 1673, 1673B, 1673C

Also compatible with Mitsubishi applications sharing the Delco 35MT, 40MT, and 50MT starter platform.

Replaces Part Number(s):

1M9968, 1M-9968, 9G9817

Aftermarket Interchange Numbers

5552531, 5960142, 1894637, 1923454, 1923484, WAI 4530B, 62-1800, 62-1800-1, 133-12040, 133-12039

New aftermarket replacement part - not remanufactured, not used.