Engine Bearings
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- German®Engine Connecting Rod Bearing (616-103-142-72)Engine Connecting Rod Bearing by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and problem-free...Made with precision and quality in mindDesigned to meet your specific needs$203.26
- German®Engine Crankshaft Main Bearing Set (616-100-138-60)Engine Crankshaft Main Bearing Set (616-100-138-60) by German®. For + 0.25 mm Case. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$473.52
- German®Engine Crankshaft Main Bearing Set (616-100-138-90)Engine Crankshaft Main Bearing Set (616-100-138-90) by German®. For + 0.50 mm Case. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$517.41
- German®Engine Crankshaft Main Bearing Set (616-100-138-70)Engine Crankshaft Main Bearing Set (616-100-138-70) by German®. For + 0.25 mm Crank/Case. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials,...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$492.61
- German®Engine Crankshaft Main Bearing Set (546-101-901-50)Engine Crankshaft Main Bearing Set (546-101-901-50) by German®. For + 0.25 mm Crank. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$482.53
- German®Engine Crankshaft Main Bearing Set (616-100-138-55)Engine Crankshaft Main Bearing Set (616-100-138-55) by German®. For + 0.50 mm Crank. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$470.75
- German®Engine Crankshaft Main Bearing Set (911-101-901-50)Engine Crankshaft Main Bearing Set by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$355.97
- German®Engine Crankshaft Main Bearing Set (964-101-901-51)Engine Crankshaft Main Bearing Set by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$335.25
- German®Engine Crankshaft Main Bearing Set (616-100-138-50)Engine Crankshaft Main Bearing Set (616-100-138-50) by German®. For + 0.25 mm Crank. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$474.33
- German®Main Bearing (964-101-138-01)Main Bearing (964-101-138-01) by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and problem-free...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$176.60
- German®Main Bearing (901-101-138-03)Main Bearing by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and problem-free operation while...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$135.22
- German®Main Bearing (964-101-138-54)Main Bearing (964-101-138-54) by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and problem-free...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$271.32
- German®Standard Engine Crankshaft Main Bearing Set (546-101-901-00)Standard Engine Crankshaft Main Bearing Set (546-101-901-00) by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$476.38
- German®Standard Engine Crankshaft Main Bearing Set (616-100-138-00)Standard Engine Crankshaft Main Bearing Set (616-100-138-00) by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver...Manufactured from high-strength materials to lastDurable construction to withstand everyday wear and tear$439.29
- Hyundai OEEngine Water Pump Housing Bolt (1140308556K)Engine Water Pump Housing Bolt (1140308556K) by Hyundai OE. Choose from premium-grade Hyundai OE parts to restore the factory performance and make your vehicle look like the day it was made. They meet the highest standards of quality to...Genuine Hyundai OEM part that fits your specific vehicle perfectlyCrafted from proven materials to ensure quality and durability$1.57
- Kolbenschmidt®Connecting Rod Bearing Set (87998630)Connecting Rod Bearing Set (87998630) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$21.85
- Kolbenschmidt®Connecting Rod Bearing Set (87 998 620)Connecting Rod Bearing Set (87 998 620) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$15.26
- Kolbenschmidt®Connecting Rod Bearing Set (77967600)Connecting Rod Bearing Set (77967600) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$184.39
- Kolbenschmidt®Connecting Rod Bearing Set (87 976 610)Connecting Rod Bearing Set (87 976 610) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$21.98
- Kolbenschmidt®Connecting Rod Bearing Set (77269600)Connecting Rod Bearing Set by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality and maximum...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$43.44
- Kolbenschmidt®Connecting Rod Bearing Set (87 580 600)Connecting Rod Bearing Set (87 580 600) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$29.81
- Kolbenschmidt®Connecting Rod Bearing Set (87 797 620)Connecting Rod Bearing Set (87 797 620) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$34.58
- Kolbenschmidt®Connecting Rod Bearing Set (87 998 640)Connecting Rod Bearing Set (87 998 640) by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$15.30
- Kolbenschmidt®Crankshaft Main Bearing Set (87412601)Crankshaft Main Bearing Set by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality and maximum...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$97.73
- Kolbenschmidt®Crankshaft Main Bearing Set (77947600)Crankshaft Main Bearing Set by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality and maximum...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$89.61
- Mercedes-Benz OEAccessory Drive Belt Idler Pulley Bolt (910105010011)Accessory Drive Belt Idler Pulley Bolt (910105010011) by Mercedes-Benz OE. Even such a legendary vehicle as Mercedes-Benz needs proper repair and maintenance to run reliably for a long time. To make your prized possession look and...Genuine Mercedes-Benz OE parts designed to offer a perfect fitGuaranteed to get your vehicle back to its prime condition$4.91
- Mercedes-Benz OEBelt Tensioner Pulley Washer (000137008212)Belt Tensioner Pulley Washer (000137008212) by Mercedes-Benz OE. Even such a legendary vehicle as Mercedes-Benz needs proper repair and maintenance to run reliably for a long time. To make your prized possession look and perform like the...Genuine Mercedes-Benz OE parts designed to offer a perfect fitGuaranteed to get your vehicle back to its prime condition$1.22
- Mercedes-Benz OEHeadlight Washer Nozzle Screw (910105005002)Headlight Washer Nozzle Screw (910105005002) by Mercedes-Benz OE. Even such a legendary vehicle as Mercedes-Benz needs proper repair and maintenance to run reliably for a long time. To make your prized possession look and perform like...Genuine Mercedes-Benz OE parts designed to offer a perfect fitGuaranteed to get your vehicle back to its prime condition$2.18
- Mercedes-Benz OELower Suspension Stabilizer Bar Link Bolt (910105008037)Lower Suspension Stabilizer Bar Link Bolt (910105008037) by Mercedes-Benz OE. Even such a legendary vehicle as Mercedes-Benz needs proper repair and maintenance to run reliably for a long time. To make your prized possession look and...Genuine Mercedes-Benz OE parts designed to offer a perfect fitGuaranteed to get your vehicle back to its prime condition$3.66
- Merchant Automotive®Engine Main Bearings (MS2218P)Engine Main Bearings (MS2218P) by Merchant Automotive®. If you’re looking for high-quality aftermarket parts for your truck, you can’t go wrong with Merchant Automotive. Top-grade Merchant Automotive products are designed by...Designed using sophisticated technology and equipmentMade to combine functionality and reliability$200.54
There are many different kinds of bearings used on automobiles, including ball and roller bearings, needle bearings, and tapered roller bearings, but the bearings that are commonly used inside the engine are called plain bearings. These bearings are either cylindrical or are made of two inserts that form an enclosure. Components like the crankshaft and camshaft rotate on plain bearings supported by a film of oil. Oil is supplied under pressure by the engine oil pump.
Bearing construction varies according to intended use: stock, high-performance, and racing, and there are too many variations for an in-depth discussion here. In general, there are bi-metal and tri-metal bearings. Both have the lining material applied to a rigid and supportive steel backing. Bi-metal bearings have an aluminum alloy lining. The alloy may be strengthened with other metals, and the latest alloys contain silicone, which significantly increases surface hardness. Aluminum alloys with silicone are highly resistant to seizure. Tri-metal bearings have an intermediate layer of copper bearing alloy and an overlay of lead-tin-copper alloy. They have the strength, fatigue resistance and embedability (the ability to embed hard particles like dirt and debris that would otherwise become lodged between the bearing and journal, causing wear to the journal) that is the right combination for many applications.
Bores in the cylinder block are precision machined to accept the engine bearings. The camshaft and balance shaft bearings are cylindrical and pressed into the bores. The main and connecting rod bearing bores are split, with the bottom half of the bore known as the cap. Main and connecting rod bearings are called inserts that fit into bearing “saddles” formed by the top half of the bores in the block and connecting rods, and the caps. Where required, bearings have oil holes that must align with oil passages in the block, and some may have oil grooves. The thrust main bearing is flanged where it contacts the crankshaft thrust surface. Bearing halves for the crankshaft and connecting rods have a certain amount of material that extends above the bore parting line when placed in the saddle, which is known as bearing “crush”. This ensures that the bearings will be fully seated in the bores when the caps are torqued to specification.
For optimal performance and long life, engine bearings must have the right amount of oil clearance. This clearance is the difference between the shaft diameter and the diameter of the installed bearing, and is typically between 0.001” and 0.0035”. Main and connecting rod bearing clearance can be checked with the crankshaft installed using Plastigage, but a more precise measurement can be achieved by measuring the journal diameter with a micrometer and the installed bearing diameter with a bore gauge, and subtracting the micrometer dimension from the bore gauge dimension. If the clearance is excessive and the crankshaft is worn, it can be ground undersize and the appropriate undersize bearings used. However, the main or connecting rod housing bores could also be larger than specifications, requiring the block to be aligned honed or the big ends of the connecting rods reconditioned.
Although there are some performance bi-metal bearings, most performance bearings are of tri-metal construction. Many performance bearings also come with a proprietary dry film coating to reduce friction, provide startup protection, and increase strength and heat resistance. In addition to superior materials, they also have design features better suited to high power output engines. The eccentricity of performance bearings are tailored to the engine block and connecting rod bore characteristics of performance engine components to help maintain proper oil clearance, and they have higher crush for improved bearing retention. Performance bearings may be narrower than stock or chamfered to allow for the larger fillet radiuses of performance crankshafts, and they may have enlarged oil holes and/or grooves to improve lubrication.
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Engine Assemblies
Motor Mounts
Engine Blocks
Valves & Valvetrain Parts
Pistons, Rings & Connecting Rods
Oil Filters
Serpentine Belts & Auxiliary Drive Belts
Valve Covers
Timing Gears, Chains & Covers
Engine Oil Pans, Drain Plugs & Dipsticks
Cylinder Heads
Timing Belts
Engine Pulleys
Engine Sensors, Relays, Switches & Connectors
Oil Pumps
Drive Belt Tensioners
Oil Coolers
Camshafts
Crankshafts
Engine Management Systems
Harmonic Balancers
Engine Rebuild Kits
Oil Catch Cans
Balance Shafts
Engine Swap Kits
Engine Wiring Harnesses
Intercoolers
Throttle Bodies
Carburetors
Motor Oils