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King AM-Series Main Bearings

4.24 out of 5 stars 33 Customer Reviews

King AM-Series main bearings are recommended for street or marine applications. These crankshaft bearings have superior embeddability, which provides greater macro-particle to reduce scratching of the crank journals and tearing or weakening of the Babbitt overlays. King AM-Series main bearings feature tolerance control to within plus or minus .0001—and they're lead-free, making them environmentally-friendly and user-safe. Hundreds of performance sets are available; order the replacement bearings designed to fit your vehicle.

Results 1 - 25 of 229

King AM-Series Main Bearings MB5278AM

Main Bearings, AM-Series, 3/4 Groove, Standard Size, Bi Metal, Ford, 2.3, 2.5L, Set of 5

Part Number: KGB-MB5278AM

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB 589AM 010

Main Bearings, AM-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi Metal, Buick, Land Rover, MG, Rover, V8, Set of 5

Part Number: KGB-MB589AM010

3.0 out of 5 stars ( 1 )

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

King AM-Series Main Bearings MB5278AM0.25

Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, Ford, 2.3, 2.5L, Set of 5

Part Number: KGB-MB5278AM025

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB 589AM

Main Bearings, AM-Series, 1/2 Groove, Standard Size, Bi Metal, Buick, Land Rover, MG, Rover, V8, Set of 5

Part Number: KGB-MB589AM

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB5568AM

Main Bearings, 1/2 Groove, Standard Size, Bi Metal, Alecular Alloy, for use on Honda®/Acura®, Set of 5

Part Number: KGB-MB5568AM

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB7039AM

Main Bearings, AM-Series, Alecular Silicon, Standard Size, BMW, 2.5L, 2.7L, 2.8L, Set of 5

Part Number: KGB-MB7039AM

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB5031AM

Main Bearings, King AM-Series Main Bearings, Stock Size, Bi-Metal, Land Rover, Sold as a Set of 5

Part Number: KGB-MB5031AM

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

King AM-Series Main Bearings MB5227AM

Main Bearings, AM-Series, 3/4 Groove, Standard Size, Bi Metal, Mitsubishi, 1.6, 1.8, 2.0, 2.4L, Set 5

Part Number: KGB-MB5227AM

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

King AM-Series Main Bearings MB 612AM

Main Bearings, King AM-Series Main Bearings, Stock Size, Bi-Metal, Volvo, Sold as a Set of 5

Part Number: KGB-MB612AM

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

King AM-Series Main Bearings MB5278AM0.5

Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, Ford, 2.3, 2.5L, Set of 5

Part Number: KGB-MB5278AM05

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

King AM-Series Main Bearings MB5568AM0.25

Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, for use on Acura®, Honda®, Set of 5

Part Number: KGB-MB5568AM025

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB5278AM0.75

Main Bearings, AM-Series, Alecular Silicon, 0.75mm Crankshaft Undersize, Ford, 2.3, 2.5L, Set of 5

Part Number: KGB-MB5278AM075

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

King AM-Series Main Bearings MB5375AM0.25

Main Bearings, King AM-Series Main Bearings, .010 in., .25 mm Crankshaft Undersize, Alecular Silicon, Lotus, Pontiac, Toyota, Sold as a Set

Part Number: KGB-MB5375AM025

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

King AM-Series Main Bearings MB5269AM

Main Bearings, King AM-Series Main Bearings, Stock Size, Alecular Silicon, Audi, Volkswagen, Sold as a Set of 5

Part Number: KGB-MB5269AM

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

King AM-Series Main Bearings MB5256AM

Main Bearings, King AM-Series Main Bearings, Stock Size, Bi-Metal, for Hyundai, Sold as a Set

Part Number: KGB-MB5256AM

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

King AM-Series Main Bearings MB5304AM

Main Bearings, AM-Series, Alecular Silicon, Standard Size, Ford, Kia, Mazda, Mercury, Set of 5

Part Number: KGB-MB5304AM

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

King AM-Series Main Bearings for 1993-1997 PROBE, MX-6, 1993-2002 626 - MB5171AM

Main Bearings, AM-Series, 3/4 Groove, Standard Size, Bi Metal, Mazda, 1.8, 2.0L, Set of 5

Part Number: KGB-MB5171AM

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

King AM-Series Main Bearings MB5568AM0.75

Main Bearings, AM-Series, Alecular Silicon, 0.75mm Crankshaft Undersize, for use on Acura®, Honda®, Set of 5

Part Number: KGB-MB5568AM075

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

King AM-Series Main Bearings MB 589AM 020

Main Bearings, AM-Series, 1/2 Groove, .020 in. Crankshaft Undersize, Bi Metal, Buick, Land Rover, MG, Rover, V8, Set of 5

Part Number: KGB-MB589AM020

Not Yet Reviewed

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King AM-Series Main Bearings MB5315AM

Main Bearings, AM-Series, Alecular Silicon, Standard Size, Hyundai, Mitsubishi, Set of 5

Part Number: KGB-MB5315AM

Not Yet Reviewed

Estimated Ship Date: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

King AM-Series Main Bearings MB5587AM0.5

Main Bearing, AM-Series, Alecular Silicon, 0.50mm. Crankshaft Undersize, Suzuki, 1.6L, Set of 5

Part Number: KGB-MB5587AM05

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

King AM-Series Main Bearings MB5259AM0.75

Main Bearings, AM-Series, Alecular Silicon, 0.75mm Crankshaft Undersize, for use on Acura®, Honda®, Set of 5

Part Number: KGB-MB5259AM075

Not Yet Reviewed

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King AM-Series Main Bearings MB5259AM1.0

Main Bearings, AM-Series, Alecular Silicon, 1.00mm Crankshaft Undersize, for use on Acura®, Honda®, Set of 5

Part Number: KGB-MB5259AM10

Not Yet Reviewed

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King AM-Series Main Bearings MB5259AM

Main Bearings, AM-Series, 1/2 Groove, Standard Size, Bi Metal, for use on Acura®, Honda®, Set of 5

Part Number: KGB-MB5259AM

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

King AM-Series Main Bearings MB5287AM

Main Bearings, King AM-Series Main Bearings, Stock Size, Bi-Metal, Toyota, Sold as a Set

Part Number: KGB-MB5287AM

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

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