Availability
Main Bearings, SI-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Aluminum Silicon, Chevy, 400, Set of 5
Part Number: KGB-MB509SI030
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, SI-Series, 1/2 Groove, 0.030 in. Over Size, Bi-metal, Silicon Aluminum, Ford, Flathead V8, Set
Part Number: KGB-MB3351SI030
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, Standard Size, Tri Metal, Full Groove, Ford, 6.9L Diesel, Set of 5
Part Number: SLP-5110M
Not Yet Reviewed
Estimated Ship Date: Oct 30, 2025 if ordered today
Estimated Ship Date: Oct 30, 2025 if ordered today
Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Ford, Flathead V8, Set
Part Number: KGB-MB3351SI
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, AM-Series, Full Groove, Standard Size, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403, Set of 5
Part Number: KGB-MB5514AM
Estimated Ship Date: Jan 7, 2026 if ordered today
Estimated Ship Date: Jan 7, 2026 if ordered today
Main Bearings, Race Series Main Bearing Sets, 0.001 in. Crankshaft Undersize, Tri-metal Copper-lead Alloy, Ford, Small Block Windsor 302, Set of 5
Part Number: SUM-590H001
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, Race Series Main Bearing Sets, 0.009 in. Crankshaft Undersize, Tri-metal Copper-lead Alloy, Ford, Small Block Windsor 302, Set of 5
Part Number: SUM-590H009
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, HP-Series, Copper/Lead/Nickel, Standard Size, Chrysler, Dodge, Plymouth, 426, 440, Set of 5
Part Number: KGB-MB5116XP
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Main Bearings, CP-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Tri Metal, Ford, 7.3L, Diesel, Set of 5
Part Number: KGB-MB5263CP010
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, SI-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chyrsler, Big Block, Set of 5
Part Number: KGB-MB5116SI030
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, 1/2 Groove, Standard Size, Bi Metal, Alecular Alloy, Set of 4
Part Number: KGB-MB438AM
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
MAIN BEARINGS
Part Number: KGB-MB5876SI010
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, SI-Series, Standard Size, Bi-metal, Silicon Aluminum, Chevy, 4.8, 5.3L, Set of 5
Part Number: KGB-MB5766SI
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
MAIN BEARING SET, For GENERAL MOTORS DURAMAX DIESEL 0.040"O/S
Part Number: KGB-MB5848GPC
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, AM-Series, 1/2 Groove, .020 in. Crankshaft Undersize, Bi Metal, Ford, 351C, Set of 5
Part Number: KGB-MB5503AM020
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, Race Series, Tri-Metal, 1/2 Groove, .010 in. Crankshaft Undersize, Ford, Small Block, Set of 5
Part Number: PEB-5M590H-10
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearing Set, CHEVROLET LS series L20, LS1/2/4/6 - pMaxKote
Part Number: KGB-MB5013XPC020
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
MAIN BEARING SET
Part Number: CLE-MS590HXC
Not Yet Reviewed
Estimated Ship Date: Nov 21, 2025 if ordered today
Estimated Ship Date: Nov 21, 2025 if ordered today
MAIN BEARINGS
Part Number: CLE-MS2034HX
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, AMC 4.0L, Set of 7
Part Number: KGB-MB7719SI010
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, King SI-Series Main Bearings, Stock Size, Bi-Metal, Chrysler, Dodge, Jeep, Ram, Sold as a Set of 4
Part Number: KGB-MB4518SI
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Main Bearings, HP-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5
Part Number: KGB-MB557HP030
Not Yet Reviewed
Estimated Ship Date: Jan 7, 2026 if ordered today
Estimated Ship Date: Jan 7, 2026 if ordered today
Main Bearings, Direct Replacement, Stock Size, Ford, Lincoln, Mercury, Set of 4
Part Number: SLP-7445MA
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, Ford, 2.3, 2.5L, Set of 5
Part Number: KGB-MB5278AM025
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
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