Availability
1989 Main Bearings
Main Bearings, 0.020 in. Crankshaft Undersize, Bi Metal, 3/4 Groove, Chevy, V6, 3.3L, 3.8L, 4.3L, Set of 4
Part Number: SLP-5085MA20
Not Yet Reviewed
Estimated Ship Date: Apr 30, 2026 if ordered today
Estimated Ship Date: Apr 30, 2026 if ordered today
Main Bearings, .060 in. Over Size, Tri Metal, 1/2 Groove, Chevrolet, Small Block, Set of 5
Part Number: SLP-4663M60
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, SI-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5
Part Number: KGB-MB5184SI030
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.020 in. Crankshaft Undersize, Chevy, Small Block, Set of 5
Part Number: KGB-MB5184SI020
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, SI-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, AMC, Jeep, Set of 5
Part Number: KGB-MB5560SI030
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
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: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
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: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.25mm. Crankshaft Undersize, Chevy, 2.8, 3.1, 3.4L, Set of 4
Part Number: KGB-MB4080SI025
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Chevy, 2.8, 3.1, 3.4L, Set of 4
Part Number: KGB-MB4080SI05
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearing Set, CHEVROLET 369-502 Gen IV, V, VI - pMaxKote
Part Number: KGB-MB556XPC020
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Main Bearings, AM-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi Metal, Ford, 2.3, 2.5L, Set of 5
Part Number: KGB-MB5547AM010
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, P-Series, Standard Size, 1/2 Groove, Upper, Tri Metal, Chevy, Big Block, 396-454, Set of 5
Part Number: EW1-MS829P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, P Series, Standard Size, Tri Metal, Ford, Small Block, Set of 5
Part Number: EW1-MS590P
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, AM-Series, Alecular Silicon, 0.75mm Crankshaft Undersize, Toyota, 2.2, 2.4L, Set of 5
Part Number: KGB-MB506AM075
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, AM-Series, 1/2 Groove, Standard Size, Bi Metal, Suzuki, 1.3L, Set of 5
Part Number: KGB-MB5556AM
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
Main Bearings, XP-Series, Copper/Lead/Nickel, 0.020 in. Undersize, Chevy, Big Block, Set of 5
Part Number: KGB-MB556XP020X
Not Yet Reviewed
Estimated Ship Date: Jul 10, 2026 if ordered today
Estimated Ship Date: Jul 10, 2026 if ordered today
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: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, 0.01 in./0.25mm Undersize Crank, for use on Acura®, for use on Honda®, 1.6-2.1L, Set of 5
Part Number: PEB-5M1957A-25
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, Aluglide, A-Series, Grooved, Bi-Metal, 0.02 in./0.50mm Undersize Crank, for use on Acura®, for use on Honda®, 1.6-2.1L, Set of 5
Part Number: PEB-5M1957A-50
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, King SI-Series Main Bearings, .010 in., .25 mm Crankshaft Undersize, Bi-Metal, Chevy, Sold as a Set of 5
Part Number: KGB-MB5532SI010
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, Direct Replacement, Stock Size, Dodge, Ford, Freightliner, Set of 7
Part Number: SLP-7216M
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, 1/2 Groove, Standard Size, Bi Metal, Alecular Alloy, Set of 4
Part Number: KGB-MB4012AM
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, AL-Series, 1/2 Groove, .020 in. Crankshaft Undersize, AL-5, Chevrolet, Small Block, Set of 5
Part Number: CLE-MS909A20
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, AM-Series, Full Groove, Standard Size, Bi Metal, Mazda, 1.5, 1.6, 1.8L, Set of 5
Part Number: KGB-MB5537AM
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Main Bearings, SI-Series, .020 in. Crankshaft Undersize, Bi Metal, Ford, Mercury, 240, 250, 300, Set of 7
Part Number: KGB-MB7750SI020
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster