Engine Bearings & Spacers

Main Bearings, Competition, 0.011 in. Crankshaft Undersize, Tri Metal, 3/4 Groove, Chevy, 302, 305, 350, Set of 5

Part Number: SLP-139M11

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Estimated Ship Date: Today

Main Bearings, Competition, 0.020 in. Crankshaft Undersize, Tri Metal, 3/4 Groove, Chevy, 302, 305, 350, Set of 5

Part Number: SLP-139M20

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Estimated Ship Date: Today

Main Bearings, 0.020 in. Crankshaft Undersize, Bi Metal, 1/2 Groove, Chrysler, Dodge, Plymouth, 440, Set of 5

Part Number: SLP-5025MA20

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Estimated Ship Date: Today

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Main Bearings, P Series, Full Groove, Standard Size, Tri Metal, Dodge, Plymouth, 340, Set of 5

Part Number: CLE-MS963P

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

Main Bearings, Competition Series, 0.010 Crankshaft Undersize, Tri Metal, 3/4 Groove, Ford, 260, 289, 302, Set of 5

Part Number: SLP-129M10

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Estimated Ship Date: Today

Main Bearings, Competition Series, 0.010 in. Crankshaft Undersize, Tri Metal, 3/4 Groove, Chevy, 400, Set of 5

Part Number: SLP-140M10

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Main Bearings, AM-Series, Full Groove, .020 in. Crankshaft Undersize, Bi Metal, Ford, Mercury, 330-428, FE, FT, Set 5

Part Number: KGB-MB559AM020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Main Bearings, Direct Replacement, 0.030 in. Crankshaft Undersize, Tri Metal, Full Groove, Chevy, 283, 327, Set of 5

Part Number: SLP-994M30

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Main Bearings, Competition, 0.001 in. Crankshaft Undersize, Super Duty Alloy, 3/4 Groove, Chevy, Pontiac, 5.7L, Set of 5

Part Number: SLP-152M1

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Estimated Ship Date: Today

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Main Bearings, SI-Series, Full Groove, Standard Size, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5504SI

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Main Bearings, SI-Series, Full Groove, .020 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Jeep, Mopar, Set of 5

Part Number: KGB-MB5534SI020

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Estimated Ship Date: Today

Main Bearings, SI-Series, Full Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Jeep, Mopar, Set of 5

Part Number: KGB-MB5534SI010

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Estimated Ship Date: Today

Main Bearings, AM-Series, Full Groove, Standard Size, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403, Set of 5

Part Number: KGB-MB5514AM

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearings, AM-Series, Full Groove, .020 in. Crankshaft Undersize, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403

Part Number: KGB-MB5514AM020

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Estimated Ship Date: Feb 16, 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: Feb 16, 2026 if ordered today

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Main Bearings, AM-Series, Full Groove, .010 in. Crankshaft Undersize, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403

Part Number: KGB-MB5514AM010

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearings, P Series, Full Groove, .020 in. Crankshaft Undersize, Tri Metal, Ford, 332-428 FE, Set of 5

Part Number: CLE-MS445P20

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Main Bearings, SI-Series, Full Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5504SI030

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Estimated Ship Date: Feb 16, 2026 if ordered today

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MAIN BEARING SET

Part Number: CLE-MS178P30

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Main Bearings, SI-Series, Full Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Jeep, Mopar, Set of 5

Part Number: KGB-MB5534SI030

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Main Bearings, SI-Series, Full Groove, .050 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, Set of 5

Part Number: KGB-MB5504SI050

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Estimated Ship Date: Feb 13, 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: Today

Main Bearings, Stock Size, Bi-metal, Dodge, Jeep, 5.2L, Set

Part Number: CWA-4397776K

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Main Bearings, AM-Series, Full Groove, .030 in. Crankshaft Undersize, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403

Part Number: KGB-MB5514AM030

Not Yet Reviewed

Estimated Ship Date: Feb 13, 2026 if ordered today

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Main Bearings, 0.040 in. Undersize, Bi Metal, 1/2 Groove, Ford, 351W, 351M, 400, Set of 5

Part Number: SLP-5078MA40

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Estimated Ship Date: Dec 8, 2025 if ordered today

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