Main Bearings

Main Bearings, 0.040 in. Crankshaft Undersize, Bi Metal, 1/2 Groove, Chevy, Big block, Set of 5

Part Number: SLP-4400MA40

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Estimated Ship Date: Today

Main Bearings, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI040

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Estimated Ship Date: Today

Main Bearings, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Small Block, Set of 5

Part Number: KGB-MB529SI040

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Estimated Ship Date: Today

Main Bearings, AM-Series, 1/2 Groove, .040 in. Crankshaft Undersize, Bi Metal, AMC, Jeep, 290-401, Set of 5

Part Number: KGB-MB5518AM040

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Estimated Ship Date: Today

Main Bearings, P Series, 1/2 Groove, .040 in. Crankshaft Undersize, Tri Metal, Chevy, Small Block, Set of 5

Part Number: CLE-MS909P40

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Estimated Ship Date: Jun 10, 2026 if ordered today

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Main Bearings, 0.040 in. Crankshaft Undersize, Tri Metal, Full Groove, Ford, Mercury, FE Big Block, Set of 5

Part Number: SLP-4261M40

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Estimated Ship Date: May 5, 2026 if ordered today

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

Part Number: KGB-MB5293SI040

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Estimated Ship Date: Jul 27, 2026 if ordered today

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Main Bearings, .040 in. Over Size, Tri Metal, 1/2 Groove, Chevrolet, Small Block, Set of 5

Part Number: SLP-4663M40

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Estimated Ship Date: May 15, 2026 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: Jul 23, 2026 if ordered today

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Main Bearings, SI-Series, Full Groove, .040 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5504SI040

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Estimated Ship Date: Jul 23, 2026 if ordered today

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Main Bearings, 0.040 in. Crankshaft Undersize, Bi Metal, 1/2 Groove, Dodge, Plymouth, 340, Set of 5

Part Number: SLP-4923MA40

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Estimated Ship Date: May 5, 2026 if ordered today

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Main Bearings, SI-Series, 1/2 Groove, .040 in. Crankshaft Undersize, Bi-metal, Aluminum Silicon, Jeep, Chrysler, Set of 5

Part Number: KGB-MB517SI040

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Estimated Ship Date: Jul 23, 2026 if ordered today

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Main Bearing Set-Ford V8, 351M-351W-400, 1969-98

Part Number: CLE-MS981A40

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Estimated Ship Date: Jun 10, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Chevy, 6.2, 6.5L Diesel, Set of 5

Part Number: KGB-MB5257SI10

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Estimated Ship Date: Jul 23, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Dodge, Jeep, 4.7L, Set of 5

Part Number: KGB-MB5284SI10

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Estimated Ship Date: Jul 23, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Undersize, Chrysler, Dodge, Jeep, 5.7L, 6.1L, Set of 5

Part Number: KGB-MB5659SI10

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Estimated Ship Date: Jul 23, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Edsel, Ford, Mercury, 239, 256, 272, 292, Set of 5

Part Number: KAA-MBS1575-040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Ford, Mercury, 312, Set of 5

Part Number: KAA-MBS1717-040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Dodge, Plymouth, 218, 230, Set of 4

Part Number: KAA-MBS120M040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Buick, 264, 322, Set of 5

Part Number: KAA-MBS1555-040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Oldsmobile, 303, 324, Set of 5

Part Number: KAA-MBS1241M040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Cadillac, 331, Set of 5

Part Number: KAA-MBS1329-040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, DeSoto, Dodge, Plymouth, 241, 260, 270, 276, 291, Set of 5

Part Number: KAA-MBS1505-040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Ford, Mercury, 144, 170, 200, Set of 4

Part Number: KAA-MBS2518-040

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Estimated Ship Date: May 20, 2026 if ordered today

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Main Bearing, Full Groove, .040 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, GMC, 228, 248, 270, Set of 4

Part Number: KAA-MBS929M040

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Estimated Ship Date: May 20, 2026 if ordered today

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