Availability
1978 Main Bearings
Main Bearings, 1/2 Groove, .040 in. Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5
Part Number: KGB-MB5512SI040
Not Yet Reviewed
Estimated Ship Date: May 8, 2026 if ordered today
Estimated Ship Date: May 8, 2026 if ordered today
Main Bearings, 1/2 Groove, .060 in. Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5
Part Number: KGB-MB5512SI060
Not Yet Reviewed
Estimated Ship Date: May 8, 2026 if ordered today
Estimated Ship Date: May 8, 2026 if ordered today
Crankshaft Main Bearings MITSUBISHI 4G52
Part Number: KGB-MB577AM025
Not Yet Reviewed
Estimated Ship Date: May 8, 2026 if ordered today
Estimated Ship Date: May 8, 2026 if ordered today
Main Bearings, 0.040 in. Undersize, Bi Metal, 1/2 Groove, Ford, 351W, 351M, 400, Set of 5
Part Number: SLP-5078MA40
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
Main Bearing Set;
Part Number: SLP-4289M30
Not Yet Reviewed
Estimated Ship Date: Feb 27, 2026 if ordered today
Estimated Ship Date: Feb 27, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.020 in. Crankshaft Undersize, Mitsubishi, 2.6L, Set of 5
Part Number: KGB-MB546AM05
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, GM V6, Set of 5
Part Number: KGB-MB445SI030
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, 1/2 Groove, Standard Size, Bi Metal, Volkswagen, L4, Set of 5
Part Number: KGB-MB5070AM
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, Full Groove, Alecular Silicon, 0.75mm. Crankshaft Undersize, Ford, 2.0L, 2.3L, Set of 5
Part Number: KGB-MB582AM075
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, Full Groove, Alecular Silicon, 0.75mm. Crankshaft Undersize, Toyota, 2.2L, 2.4L, Set of 5
Part Number: KGB-MB580AM075
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, Mitsubishi, 2.6L, Set of 5
Part Number: KGB-MB546AM025
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, SI-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Set of 4
Part Number: KGB-MB452SI010
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 1.00mm Crankshaft Undersize, Nissan, 2.0, 2.2, 2.4L, Set of 5
Part Number: KGB-MB5233AM10
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearing Set;
Part Number: SLP-4289M40
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Main Bearings, 0.040 in. Crankshaft Undersize, Tri Metal, Full Groove, Ford, Mercury, V8, 221, 260, 289, 302, Set of 5
Part Number: SLP-4125M40
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Main Bearing Set;
Part Number: SLP-4125MA30
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Main Bearings, 0.030 in. Crankshaft Undersize, Bi Metal, 3/4 Groove, Chevy, V6, 3.3L, 3.8L, 4.3L, Set of 4
Part Number: SLP-5085MA30
Not Yet Reviewed
Estimated Ship Date: Mar 2, 2026 if ordered today
Estimated Ship Date: Mar 2, 2026 if ordered today
Main Bearings, King XP-Sereis Main Bearings, .020 in., Crankshaft Undersize, Tri-Metal, Ford, Sold as a Set of 5
Part Number: KGB-MB529XP020
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.75mm Crankshaft Undersize, Nissan, 2.0, 2.2, 2.4L, Set of 5
Part Number: KGB-MB5233AM075
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Crankshaft Main Bearings FIAT 131-132
Part Number: KGB-MB562AM010
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, XP-Series, Performance, Tri-Metal, 0.026mm Crankshaft Undersize, Set of 5
Part Number: KGB-MB5168XP026
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
Main Bearings, AM-Series, 1/2 Groove, Standard Size, Bi Metal, Mitsubishi, 2.6L, Set of 5
Part Number: KGB-MB546AM
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
King AM-Series Main Bearings for 1985-1995 4RUNNER, 1983-1985 CELICA, 1984-1995 PICKUP - MB 506AM0.5
King AM-Series Main Bearings for 1985-1995 4RUNNER, 1983-1985 CELICA, 1984-1995 PICKUP - MB 506AM0.5
Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, Toyota, 2.2, 2.4L, Set of 5
Part Number: KGB-MB506AM05
Not Yet Reviewed
Estimated Ship Date: May 11, 2026 if ordered today
Estimated Ship Date: May 11, 2026 if ordered today
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