1968 Main Bearings

Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI

4.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

Main Bearings, 1/2 Groove, .002 in. Crankshaft Undersize, Bi Metal, Jeep, 2.5, 3.8, 4.0, 4.2L, Pair

Part Number: CWA-J8133682

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

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

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

Main Bearing,

Part Number: CWA-J8133255

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Estimated Ship Date: May 27, 2026 if ordered today

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Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, 0.02 in./0.50mm Undersize Crankshaft, Chevy, Excalibur, 6.5L, 6.6L, 7.0L, 7.4L, Set of 5

Part Number: PEB-5M829A-20

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

Main Bearings, 1/2 Groove, .020 in. Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5512SI020

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, 1/2 Groove, .030 in. Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5512SI030

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Estimated Ship Date: May 28, 2026 if ordered today

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

Part Number: KGB-MB5512SI040

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, 1/2 Groove, .060 in. Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5512SI060

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .020 in. Undersize, Bi Metal, Ford, Reliant, 2.8L, Set of 4

Part Number: KGB-MB435AM020

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .030 in. Undersize, Bi Metal, Ford, Reliant, 2.8L, Set of 4

Part Number: KGB-MB435AM030

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, AM-Series, 1/2 Groove, .040 in. Undersize, Bi Metal, Ford, Reliant, 2.8L, Set of 4

Part Number: KGB-MB435AM040

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, SI-Series, .030 in. Undersize, Bi-metal, Silicon Aluminum, Ford, 240, 250, 300, Set of 7

Part Number: KGB-MB760SI030

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Estimated Ship Date: May 28, 2026 if ordered today

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Main Bearings, SI-Series, .060 in. Undersize, Bi-metal, Silicon Aluminum, Ford, 240, 250, 300, Set of 7

Part Number: KGB-MB760SI060

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Estimated Ship Date: May 28, 2026 if ordered today

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