CHEVROLET Chevy small block Gen II (LT-based engines) Main Bearings

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

Part Number: KGB-MB5184SI020

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Estimated Ship Date: Nov 25, 2025 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.010 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB5183SI010

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Estimated Ship Date: Nov 26, 2025 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.040 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB5184SI040

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Estimated Ship Date: Nov 25, 2025 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB5184SI030

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Estimated Ship Date: Nov 24, 2025 if ordered today

• Drop Ship
• Special Order

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

Part Number: KGB-MB5183SI020

Not Yet Reviewed

Estimated Ship Date: Tuesday 9/2/2025