Availability
Main Bearings, SI-Series, Silicon Aluminum, 0.040 in. Crankshaft Undersize, Chevy, Small Block, Set of 5
Part Number: KGB-MB5184SI040
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.25mm. Crankshaft Undersize, Ford, 4.6L, Set of 5
Part Number: KGB-MB5219SI025
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearing, SI-Series, Silicon Aluminum, 0.020 in. Crankshaft Undersize, Ford, 429, 460, Set of 5
Part Number: KGB-MB5650SI020
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, King SI-Series Main Bearings, .020 in., .50 mm Crankshaft Undersize, Bi-Metal, Audi, Volkswagen, Sold as a Set of 5
Part Number: KGB-MB5661SI05
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Full Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Jeep, Mopar, Set of 5
Part Number: KGB-MB5534SI030
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, King SI-Series Main Bearings, .030 in., .75 mm Crankshaft Undersize, Bi-Metal, Chevy, Sold as a Set of 5
Part Number: KGB-MB5754SI075
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, 3/4 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, 2.9, 4.0L, Set 4
Part Number: KGB-MB4023SI010
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Chrysler, Dodge, Plymouth, 3.3L, Set of 4
Part Number: KGB-MB4060SI05
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Isuzu, 2.2L, Set of 5
Part Number: KGB-MB5088SI05
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Buick, 3.3, 3.8L, Set of 4
Part Number: KGB-MB480SI030
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Full Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5
Part Number: KGB-MB5504SI040
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Ford, 4.6, 5.4L, Set of 5
Part Number: KGB-MB5280SI075
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Full Groove, .050 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5
Part Number: KGB-MB5504SI050
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
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: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Set of 4
Part Number: KGB-MB4102SI
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, Mitsubishi, 3.0L, Set of 4
Part Number: KGB-MB459SI025
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, King SI-Series Main Bearings, .030 in., .75 mm Crankshaft Undersize, Bi-Metal, Ford, Mazda, Sold as a Set of 5
Part Number: KGB-MB5442SI075
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, AMC, Jeep, Set
Part Number: KGB-MB763SI
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, SI-Series, Silicon Aluminum, Standard Size, Buick, 3.8L, Set of 4
Part Number: KGB-MB4018SI
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, King SI-Series Main Bearings, .010 in., .25 mm Crankshaft Undersize, Bi-Metal, Toyota, Sold as a Set of 7
Part Number: KGB-MB7049SI025
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, King SI-Series Main Bearings, .020 in., .50 mm Crankshaft Undersize, Bi-Metal, Toyota, Sold as a Set of 7
Part Number: KGB-MB7049SI05
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.25mm. Crankshaft Undersize, Saturn, 1.9L, Set of 4
Part Number: KGB-MB5007SI025
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Saturn, 1.9L, Set of 4
Part Number: KGB-MB5007SI05
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Saturn, 1.9L, Set of 4
Part Number: KGB-MB5007SI075
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Saturn, 1.9L, Set of 4
Part Number: KGB-MB5007SI10
Not Yet Reviewed
Estimated Ship Date: Mar 16, 2026 if ordered today
Estimated Ship Date: Mar 16, 2026 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.