Main Bearings

Main Bearings, 1/2 Groove, Standard Size, Bi Metal, Silicon Aluminum, Chevrolet, Small Block, Set of 5

Part Number: SUM-172000

4.89 out of 5 stars ( 37 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Chevy, 4.8, 5.3L, Set of 5

Part Number: KGB-MB5293SI

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi Metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: SUM-172010

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, Standard Size, Bi Metal, Silicon Aluminum, Ford, 221-302, Set of 5

Part Number: SUM-172100

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 0.001 in. Crankshaft Undersize, Bi-metal, Grooved, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Set of 5

Part Number: KGB-MB5293SI001

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Set of 5

Part Number: KGB-MB5293SI010

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .020 in. Crankshaft Undersize, Bi Metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: SUM-172020

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminumn, Chevy, Big Block, Set of 5

Part Number: KGB-MB556SI

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi Metal, Silicon Aluminum, Chevy, Big Block, Set of 5

Part Number: SUM-172210

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Ford, 429, 460, Set 5

Part Number: KGB-MB5650SI

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Aluminum Silicon, Chevy, 400, Set of 5

Part Number: KGB-MB509SI

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .020 in. Crankshaft Undersize, Bi Metal, Silicon Aluminum, Chevy, Big Block, Set of 5

Part Number: SUM-172220

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi Metal, Ford, Coyote, Set of 5

Part Number: KGB-MB5734SI

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, .020 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Set of 5

Part Number: KGB-MB5293SI020

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Big Block, Set of 5

Part Number: KGB-MB556SI010

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, Full Groove, Standard Size, Bi-metal, Silicon Aluminum, Jeep, Mopar, Set of 5

Part Number: KGB-MB5534SI

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5505SI010

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .001 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI001

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

Main Bearing, HP-Series, Silicon Aluminum, 0.010 in. Crankshaft Undersize, Ford, 429, 460, Set of 5

Part Number: KGB-MB5650SI010

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Ford, Small Block, Modified, Set of 5

Part Number: KGB-MB5505SI

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Aluminum Silicon, Chevy, 400, Set of 5

Part Number: KGB-MB509SI010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon, Aluminum R Block, Ford, 4.6L, Set of 5

Part Number: KGB-MB5281SI

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, 1/2 Groove, .020 in. Crankshaft Undersize, Bi Metal, Silicon Aluminum, Ford, 221-302, Set of 5

Part Number: SUM-172120

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

Main Bearings, SI-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Aluminum Silicon, Jeep, Chrysler, Set of 5

Part Number: KGB-MB517SI010

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026