CHEVROLET 5.4L/327 Main Bearings

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, H Series, Standard Size, Alecular, Chevy, Small Block, Set of 5

Part Number: EW1-MS909H

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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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Main Bearings, .002 in. Over Size, Tri Metal, 1/2 Groove, Chevrolet, Small Block, Set of 5

Part Number: SLP-4663M2

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Estimated Ship Date: May 11, 2026 if ordered today

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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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Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, 0.001 in. Extra Clearance, Stock Crank, Chevy, 4.4L, 4.9L, 5.0L, 5.3L, 5.4L, 5.7L, Set of 5

Part Number: PEB-5M909A-01

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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 11, 2026 if ordered today

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Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, Copper/Tin/Silicon, Stock Crankshaft, Chevy, 4.4L, 4.9L, 5.0L, 5.3L, 5.4L, 5.7L, Set of 5

Part Number: PEB-5M909A-STD

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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

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Estimated Ship Date: Today

Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, 0.01 in./0.25mm Undersize Crankshaft, Chevy, 4.4L, 4.9L, 5.0L, 5.3L, 5.4L, 5.7L, Set of 5

Part Number: PEB-5M909A-10

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Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, 0.02 in./0.50mm Undersize Crankshaft, Chevy, 4.4L, 4.9L, 5.0L, 5.3L, 5.4L, 5.7L, Set of 5

Part Number: PEB-5M909A-20

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Estimated Ship Date: Today

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: Jul 20, 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 20, 2026 if ordered today

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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: Jul 20, 2026 if ordered today

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Main Bearings, HP-Series, Silicon Aluminum, 0.021 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP021

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Estimated Ship Date: Jul 17, 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: Jul 20, 2026 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: Jul 20, 2026 if ordered today

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Main Bearings, .060 in. Over Size, Tri Metal, 1/2 Groove, Chevrolet, Small Block, Set of 5

Part Number: SLP-4663M60

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Estimated Ship Date: Today

Main Bearings, SI-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB5184SI030

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Estimated Ship Date: Jul 20, 2026 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB5183SI030

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Estimated Ship Date: Jul 20, 2026 if ordered today

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Main Bearing, Full Groove, .010 in. Crankshaft Undersize, Steel Backed, Aluminum Alloy, Chevy, 348, 409, Set of 5

Part Number: KAA-MBS2458-010

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Main Bearing, Full Groove, Standard Size, Steel Backed, Aluminum Alloy, Chevy, 348, 409, Set of 5

Part Number: KAA-MBS2458-STD

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Main Bearings, HP-Series, 3/4 Groove, .010 in. Undersize, Alecular Silicon, Chevy, Small Block, Set of 5

Part Number: KGB-MB5142HP010

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Estimated Ship Date: Jul 20, 2026 if ordered today

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Main Bearing Set;

Part Number: SLP-4663MA40

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Estimated Ship Date: May 11, 2026 if ordered today

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Main Bearing Set;

Part Number: SLP-4663MA1

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Estimated Ship Date: May 11, 2026 if ordered today

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