Availability
Main bearings have one of the toughest, dirtiest jobs in your engine. A good-quality main bearing must withstand extreme heat, friction, and high-rpm stress to keep...
Main bearings have one of the toughest, dirtiest jobs in your engine. A good-quality main bearing must withstand extreme heat, friction, and high-rpm stress to keep your engine operating at its best. At Summit Racing, top-quality main bearings are all we offer. We’re talking industry-leading brands like Clevite, Sealed Power, King Engine Bearings, Speed Pro, SCAT, Callies, and other top names. These are companies that know how to engineer a main bearing for optimum performance in anything from stock V8s to high-end race mills. Whether you’re building a fresh new engine or performing a main bearing replacement,...
Main bearings have one of the toughest, dirtiest jobs in your engine. A good-quality main bearing must withstand extreme heat, friction, and high-rpm stress to keep your engine operating at its best. At Summit Racing, top-quality main bearings are all we offer. We’re talking industry-leading brands like Clevite, Sealed Power, King Engine Bearings, Speed Pro, SCAT, Callies, and other top names. These are companies that know how to engineer a main bearing for optimum performance in anything from stock V8s to high-end race mills. Whether you’re building a fresh new engine or performing a main bearing replacement, we’ve got what you need!
Showing In Stock Items. Show All 798 Items.
Main Bearings, Standard Size, Upper 1/2 Groove, Mercruiser, Mercury Marine, OMC, Volvo Penta, Set
Part Number: RRA-18-1317
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, 1/2 Groove, Standard Size, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5
Part Number: KGB-MB554AM
Estimated Ship Date: Today
Estimated Ship Date: Today
Crankshaft Main Bearings CHEVROLET V8 400 16v
Part Number: KGB-MB5224AM
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, Full Groove, .010 in. Crankshaft Undersize, Bi Metal, Ford, Mercury, 330-428, FE, FT, Set 5
Part Number: KGB-MB559AM010
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5
Part Number: KGB-MB554AM010
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, 1/2 Groove, .020 in. Crankshaft Undersize, Bi Metal, Chevy, 265, 283, 302, 327, Set of 5
Part Number: KGB-MB554AM020
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi Metal, AMC, Jeep, 290-401, Set of 5
Part Number: KGB-MB5518AM030
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, 3/4 Groove, Standard Size, Bi-metal, Alecular Alloy, Ford, 351C, Set of 5
Part Number: KGB-MB5503AM
Estimated Ship Date: Today
Estimated Ship Date: Today
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: Jan 30, 2026 if ordered today
Estimated Ship Date: Jan 30, 2026 if ordered today
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
Estimated Ship Date: Today
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: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, 3/4 Groove, Standard Size, Bi Metal, Ford, 2.3, 2.5L, Set of 5
Part Number: KGB-MB5278AM
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, Full Groove, .040 in. Crankshaft Undersize, Bi Metal, Alecular Alloy, AMC, Willys, Set of 3
Part Number: KGB-MB319AM040
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
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: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Main Bearings, AM-Series, Full Groove, .020 in. Crankshaft Undersize, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403
Part Number: KGB-MB5514AM020
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Main Bearings, AM-Series, Full Groove, Standard Size, Bi Metal, Pontiac, 326, 350, 389, 400, Set of 5
Part Number: KGB-MB5523AM
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Main Bearings, AM-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi Metal, Chrysler, 170, 198, 225, Set of 4
Part Number: KGB-MB438AM010
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Main Bearings, AM-Series, Full Groove, Alecular Silicon, 0.25mm. Crankshaft Undersize, Ford, 2.0L, 2.3L, Set of 5
Part Number: KGB-MB582AM025
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, Toyota, Set of 7
Part Number: KGB-MB787AM025
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Main Bearings, AM-Series, .010 in. Crankshaft Undersize, Bi Metal, Ford, Mercury, 200, L6, Set of 7
Part Number: KGB-MB785AM010
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Main Bearings, AM-Series, Full Groove, .010 in. Crankshaft Undersize, Bi Metal, Oldsmobile, 260, 307, 330, 350, 403
Part Number: KGB-MB5514AM010
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
