Availability
2003 Main Bearings
Main Bearings, SI-Series, Bi-metal, 0.50mm Crankshaft Undersize, Ford, 6.8L, Set of 5
Part Number: KGB-MB621SI05
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, 0.020 in. Crankshaft Undersize, Tri Metal, 1/2 Groove, Jeep, L6, 4.0L, Set
Part Number: SLP-7211M20
Not Yet Reviewed
Estimated Ship Date: Apr 21, 2026 if ordered today
Estimated Ship Date: Apr 21, 2026 if ordered today
Main Bearings, Direct Replacement, Stock Size, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Saab, Saturn, Set of 5
Part Number: SLP-7421M
Not Yet Reviewed
Estimated Ship Date: Apr 21, 2026 if ordered today
Estimated Ship Date: Apr 21, 2026 if ordered today
Main Bearings, .010 in. Crankshaft Undersize, Bronze Alloy, Buick, Chevy, GMC, Isuzu, Oldsmobile, 4.2, Set of 7
Part Number: SLP-7409M10
Not Yet Reviewed
Estimated Ship Date: Apr 21, 2026 if ordered today
Estimated Ship Date: Apr 21, 2026 if ordered today
Engine Crankshaft Main Bearing Set 85-05 BUI/CAD/CHV/GMC/IZU/JEP/OLD/PON 2.8L/3.1L/3.4L
Part Number: EGN-BC412J50
Not Yet Reviewed
Estimated Ship Date: Apr 27, 2026 if ordered today
Estimated Ship Date: Apr 27, 2026 if ordered today
Engine Crankshaft Main Bearing Set 87-05 CHR/DOD/HYU/MIT/PLY 2.5L/3.0L
Part Number: EGN-BC422JSTD
Not Yet Reviewed
Estimated Ship Date: Apr 27, 2026 if ordered today
Estimated Ship Date: Apr 27, 2026 if ordered today
Engine Crankshaft Main Bearing Set 78-14 CHV/GM/GMC/IZU/OLD/PON 3.3L/3.8L/4.3L
Part Number: EGN-BC317J010
Not Yet Reviewed
Estimated Ship Date: Apr 27, 2026 if ordered today
Estimated Ship Date: Apr 27, 2026 if ordered today
Engine Crankshaft Main Bearing Set 74-03 CHR/DOD/JEP/PLY 5.9L
Part Number: EGN-BC313J010
Not Yet Reviewed
Estimated Ship Date: Apr 27, 2026 if ordered today
Estimated Ship Date: Apr 27, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.25mm. Crankshaft Undersize, Ford, 2.5, 3.0L, Set of 4
Part Number: KGB-MB4056SI025
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, 3/4 Groove, Standard Size, Bi-metal, Silicon Aluminum, Set of 4
Part Number: KGB-MB4074SI
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Dodge, Jeep, 3.7L, Set of 4
Part Number: KGB-MB4102SI075
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.50mm. Crankshaft Undersize, Dodge, Jeep, 3.7L, Set of 4
Part Number: KGB-MB4102SI05
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, Volkswagen, Set of 5
Part Number: KGB-MB5070AM05
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, 3/4 Groove, Standard Size, Bi Metal, Alecular Alloy, Set of 4
Part Number: KGB-MB458AM
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Ford, Mazda, 3.0L, Set of 4
Part Number: KGB-MB459SI075
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, King XP-Series Main Bearings, Stock Size, Tri-Metal, Toyota, Sold as a Set of 5
Part Number: KGB-MB5089XP
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, Toyota, 2.0, 2.4, 2.7L, Set of 5
Part Number: KGB-MB5089AM05
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.50mm Crankshaft Undersize, for use on Acura®, Honda®, Set of 5
Part Number: KGB-MB5259AM05
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, 3/4 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Ford, 2.9, 4.0L, Set 4
Part Number: KGB-MB4023SI030
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 0.75mm. Crankshaft Undersize, Ford, 3.8, 3.9, 4.2L, Set of 4
Part Number: KGB-MB4034SI075
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, 1/2 Groove, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Buick, 3.8L, V6, Set 4
Part Number: KGB-MB4017SI030
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.75mm Crankshaft Undersize, Lexus, Toyota, 2.5, 3.0, 3.4L, Set of 4
Part Number: KGB-MB4012AM075
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Buick, 3.8L, V6, Set 4
Part Number: KGB-MB4017SI010
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, AM-Series, Alecular Silicon, 0.25mm Crankshaft Undersize, Kia, Mitsubishi, Set of 4
Part Number: KGB-MB4050AM025
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Main Bearings, SI-Series, Silicon Aluminum, 1.00mm. Crankshaft Undersize, Chevy, 6.2, 6.5L Diesel, Set of 5
Part Number: KGB-MB5257SI10
Not Yet Reviewed
Estimated Ship Date: Jun 30, 2026 if ordered today
Estimated Ship Date: Jun 30, 2026 if ordered today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster