1956 Main Bearings

Summit Precision High-Tensile Tri-Metal Alloy COATED Racing Main Bearings, SBC 327 Main .001 undersize (thicker), 3/4 Upper and Lower groove, set

Part Number: SUM-429HC001

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Main Bearings, A-Series, Bi-metal Aluminum Alloy, 0.030 in. Crankshaft Crankshaft Undersize, Jeep, Willys, 134, Set

Part Number: OMX-1746504

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Estimated Ship Date: Feb 3, 2026 if ordered today

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Summit Precision High-Tensile Tri-Metal Alloy COATED Racing Main Bearings, SBC 327 Main Standard Clearance, 3/4 Upper and Lower groove, set

Part Number: SUM-429HCS

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Summit Precision High-Tensile Tri-Metal Alloy Racing Main Bearings, SBC 327 Main .001 undersize (thicker), 3/4 Upper and Lower groove, set

Part Number: SUM-429H001

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Summit Precision High-Tensile Tri-Metal Alloy Racing Main Bearings, SBC 327 Main .001 Extra Clearance, 3/4 Upper and Lower groove, set

Part Number: SUM-429HXS

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Summit Precision High-Tensile Tri-Metal Alloy COATED Racing Main Bearings, SBC 327 Main .001 Extra Clearance, 3/4 Upper and Lower groove, set

Part Number: SUM-429HXCS

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Summit Precision High-Tensile Tri-Metal Alloy Racing Main Bearings, SBC 327 Main .010 undersize (thicker), 3/4 Upper and Lower groove, set

Part Number: SUM-429H010

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Main Bearings, AM-Series, 1/2 Groove, .040 in. Crankshaft Undersize, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5

Part Number: KGB-MB554AM040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Summit Precision High-Tensile Tri-Metal Alloy COATED Racing Main Bearings, SBC 327 Main .010 undersize (thicker), 3/4 Upper and Lower groove, set

Part Number: SUM-429HC010

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Main Bearings, XP-Series, Copper/Lead/Nickel, 0.001 in. Crankshaft Undersize, Chevy, 265, 283, 302, 327, Set of 5

Part Number: KGB-MB554XP001

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Estimated Ship Date: Feb 16, 2026 if ordered today

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BEARING MAIN .010 134

Part Number: OMX-1746502

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Feb 3, 2026 if ordered today

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Main Bearing Set-.020 OS HOUSING / .040 OS LENGTH FLANGE VW AIR COOLED

Part Number: CLE-MS943A

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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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Main Bearings, Stock Size, Alecular Silicon, Jeep, 2.2L, Set

Part Number: CWA-A6798

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Estimated Ship Date: Feb 12, 2026 if ordered today

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Main Bearings, 0.010 in. Crankshaft Undersize, Alecular Silicon, Jeep, 2.2L, Set

Part Number: CWA-A6746

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Estimated Ship Date: Feb 12, 2026 if ordered today

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Main Bearings, 0.020 in. Crankshaft Undersize, Alecular Silicon, Jeep, 2.2L, Set

Part Number: CWA-A6747

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Estimated Ship Date: Feb 12, 2026 if ordered today

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Main Bearings, Full Groove, .070 in. Crankshaft Undersize, Bi Metal, Alecular Alloy, AMC, Willys, Set of 3

Part Number: KGB-MB319AM070

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearings, Full Groove, .060 in. Crankshaft Undersize, Bi Metal, Alecular Alloy, AMC, Willys, Set of 3

Part Number: KGB-MB319AM060

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .060 in. Crankshaft Undersize, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5

Part Number: KGB-MB554AM060

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .050 in. Undersize, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5

Part Number: KGB-MB554AM050

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearing Set;

Part Number: SLP-4663MA40

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5

Part Number: KGB-MB554AM030

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Estimated Ship Date: Feb 17, 2026 if ordered today

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BEARING MAIN .050 134

Part Number: OMX-1746506

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Estimated Ship Date: Feb 5, 2026 if ordered today

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BEARING MAIN .070 134

Part Number: OMX-1746508

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Estimated Ship Date: Feb 5, 2026 if ordered today

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