OLDSMOBILE CUTLASS SUPREME King Engine Bearings Engines & Components

Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Chevy, 2.8, 3.1, 3.4L, Set of 4

Part Number: KGB-MB4080SI05

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Estimated Ship Date: Feb 3, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Chevy, 2.8, 3.1, 3.4L, Set of 4

Part Number: KGB-MB4080SI075

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Estimated Ship Date: Feb 3, 2026 if ordered today

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Main Bearing Set

Part Number: KGB-MB752SI030

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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• Special Order