OLDSMOBILE Main Bearings

Main Bearings, HP-Series, Standard Size, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 9/29/2025

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

Part Number: KGB-MB557SI

4.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, Bi-metal, Silicon Aluminum, Standard Size, Chevy, 400, Small Block, Set of 5

Part Number: KGB-MB509HP

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 9/29/2025

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

Part Number: KGB-MB557SI010

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminumn, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, Silicon Aluminum, Standard Size, Chevy, 400, Set of 5

Part Number: KGB-MB509HPSTDX

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

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 9/29/2025

Main Bearings, HP-Series, 1/2 Groove, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set

Part Number: KGB-MB557HPSTDX

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, .001in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP001

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/29/2025

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

Part Number: KGB-MB557SI020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, Bi-metal, Grooved, 0.010 in. Crankshaft Crankshaft Undersize, Chevy, 400, Set of 5

Part Number: KGB-MB509HP010

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP Series, 1/2 Groove, Standard Size, Bi Metal, Pontiac, 5.3, 5.7, 6.4, 6.6L, Set

Part Number: KGB-MB5511HP

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

• Free Shipping

Main Bearings, HP-Series, Silicon Aluminum, 0.020 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP020

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, SI-Series, 1/2 Groove, .020 in. Crankshaft Undersize, Bi-metal, Aluminum Silicon, Chevy, 400, Set of 5

Part Number: KGB-MB509SI020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, Silicon Aluminum, 0.020 in. Crankshaft Undersize, Chevy, 400, Set of 5

Part Number: KGB-MB509HP020

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI030

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, HP-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, 400, Set of 5

Part Number: KGB-MB509HP030

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI040

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

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 9/29/2025

Main Bearings, King HP-Series Main Bearings, .010 in., .25 mm Crankshaft Undersize, Bi-Metal, Pontiac, Sold as a Set

Part Number: KGB-MB5511HP010

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Bearings, SI-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Aluminum Silicon, Chevy, 400, Set of 5

Part Number: KGB-MB509SI030

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, King HP-Series Main Bearings, .001 in., .025 mm Crankshaft Undersize, Bi-Metal, Pontiac, Sold as a Set

Part Number: KGB-MB5511HP001

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Bearings, SI-Series, 1/2 Groove, .020 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Buick, 3.8L, V6, Set 4

Part Number: KGB-MB4017SI020

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• Drop Ship
• Special Order

Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, GM V6, Set of 5

Part Number: KGB-MB445SI010

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025

Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Set of 4

Part Number: KGB-MB4017SI

Not Yet Reviewed

Estimated Ship Date: Monday 9/29/2025