Bearings & Bearing Spacers

Main Bearings, SI-Series, Full Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 4

Part Number: KGB-MB431SI040

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, King SI-Series Main Bearings, .020 in., .50 mm Crankshaft Undersize, Bi-Metal, Ford, Sold as a Set of 4

Part Number: KGB-MB435SI020

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, King SI-Series Main Bearings, .030 in., .75 mm Crankshaft Undersize, Bi-Metal, Ford, Sold as a Set of 4

Part Number: KGB-MB435SI030

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .040 in. Crankshaft Undersize, Bi Metal, Chrysler, 170, 198, 225, Set of 4

Part Number: KGB-MB438AM040

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Estimated Ship Date: Jan 2, 2026 if ordered today

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

Part Number: KGB-MB4040SI

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, 1/2 Groove, 0.25mm. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chrysler, 3.5L, Set of 4

Part Number: KGB-MB4040SI025

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Chrysler, 3.5L, Set of 4

Part Number: KGB-MB4040SI075

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Chrysler, 3.5L, Set of 4

Part Number: KGB-MB4040SI10

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, King SI-Series Main Bearings, .020 in., .50 mm Crankshaft Undersize, Bi-Metal, Opel, Sold as a Set of 4

Part Number: KGB-MB4049SI05

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, 3/4 Groove, Standard Size, Bi Metal, Alecular Alloy, Set of 4

Part Number: KGB-MB4050AM

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, Kia, Mitsubishi, Set of 4

Part Number: KGB-MB4050AM05

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, AM-Series, Alecular Silicon, 1.00mm Crankshaft Undersize, Kia, Mitsubishi, Set of 4

Part Number: KGB-MB4050AM10

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Ford, 3.8L, Set of 4

Part Number: KGB-MB4052SI05

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Ford, 3.8L, Set of 4

Part Number: KGB-MB4052SI10

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Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Chrysler, 2.7L, Set of 5

Part Number: KGB-MB4074SI075

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Chrysler, 2.7L, Set of 5

Part Number: KGB-MB4074SI10

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .040 in. Crankshaft Undersize, Chrysler, Dodge, Plymouth, 170, 198, 225, Set of 4

Part Number: KGB-MB407AM040

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Crankshaft Main Bearings CHEVROLET / JEEP 173ci 2.8L

Part Number: KGB-MB4093SI05

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Crankshaft Main Bearings CHEVROLET / JEEP 173ci 2.8L

Part Number: KGB-MB4093SI075

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Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Dodge, Jeep, 3.7L, Set of 4

Part Number: KGB-MB4102SI05

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Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Dodge, Jeep, 3.7L, Set of 4

Part Number: KGB-MB4102SI075

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Chrysler, 3.2, 3.5L, Set of 4

Part Number: KGB-MB4103SI10

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Buick, 3.3, 3.8L, Set of 4

Part Number: KGB-MB480SI030

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, Ford, Mazda, Set of 4

Part Number: KGB-MB496AM05

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Estimated Ship Date: Jan 2, 2026 if ordered today

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

Part Number: KGB-MB5006SI

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Estimated Ship Date: Jan 2, 2026 if ordered today

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