Engine Bearings
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- Clevite®Crankshaft Thrust Washer Set (TW606S)Crankshaft Thrust Washer Set (TW606S) by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Expertly crafted from premium materialsDesigned to match rigorous quality standards$13.31
- Clevite®Crankshaft Thrust Washer Set (TW619S)Crankshaft Thrust Washer Set by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Expertly crafted from premium materialsDesigned to match rigorous quality standards$39.04
- Clevite®Crankshaft Thrust Washer Set (TW327S)Crankshaft Thrust Washer Set (TW327S) by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Expertly crafted from premium materialsDesigned to match rigorous quality standards$10.38
- Clevite®Crankshaft Thrust Washer Set (TW451S)Crankshaft Thrust Washer Set by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Expertly crafted from premium materialsDesigned to match rigorous quality standards$8.27
- Clevite®Crankshaft Thrust Washer Set (TW596S)Crankshaft Thrust Washer Set by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Expertly crafted from premium materialsDesigned to match rigorous quality standards$15.38
- Clevite®Crankshaft Thrust Washer Set (TW326S)Crankshaft Thrust Washer Set (TW326S) by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Expertly crafted from premium materialsDesigned to match rigorous quality standards$16.16
- Clevite®Crankshaft Thrust Washer Set (TW552S)Crankshaft Thrust Washer Set (TW552S) by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Expertly crafted from premium materialsDesigned to match rigorous quality standards$12.10
- Clevite®Crankshaft Thrust Washer Set (TW551S)Crankshaft Thrust Washer Set (TW551S) by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Expertly crafted from premium materialsDesigned to match rigorous quality standards$13.01
- Clevite®Crankshaft Thrust Washer Set (TW554S)Crankshaft Thrust Washer Set by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Expertly crafted from premium materialsDesigned to match rigorous quality standards$15.98
- Clevite®Crankshaft Thrust Washer Set (TW463S)Crankshaft Thrust Washer Set by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Expertly crafted from premium materialsDesigned to match rigorous quality standards$17.24
- Clevite®Crankshaft Thrust Washer Set (TW618S)Crankshaft Thrust Washer Set by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Expertly crafted from premium materialsDesigned to match rigorous quality standards$30.43
- Clevite®Crankshaft Thrust Washer Set (TW478S)Crankshaft Thrust Washer Set (TW478S) by Clevite®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Expertly crafted from premium materialsDesigned to match rigorous quality standards$9.65
- Clevite®Thrust Washer Set (TW-726S)Thrust Washer Set by Clevite®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Material Grade OE ReplacementExpertly crafted from premium materials$15.03
- ACDelco®Genuine GM Parts™ Crankshaft Main Bearing Cap (12686745)Genuine GM Parts™ Crankshaft Main Bearing Cap (12686745) by ACDelco®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$168.08
- Genuine®Crankshaft Main Bearing Cap Bolt (N91118902)Crankshaft Main Bearing Cap Bolt (N91118902) by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials...Made with precision and quality in mindDesigned to meet your specific needs$7.60
- Genuine®Front Passenger Side Balance Shaft Bearing (944-101-125-02)Front Passenger Side Balance Shaft Bearing (944-101-125-02) by Genuine®. If your engine parts is in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$25.28
- Genuine®Rear Driver Side Balance Shaft Bearing Half (944-101-121-10)Rear Driver Side Balance Shaft Bearing Half (944-101-121-10) by Genuine®. If your engine parts is in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$28.35
- Sealed Power®Auxiliary Shaft Bearing Set (1487M)Auxiliary Shaft Bearing Set (1487M) by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$28.36
- Sealed Power®Auxiliary Shaft Bearing Set (1881M)Auxiliary Shaft Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$29.68
- Sealed Power®Auxiliary Shaft Bearing Set (1460M)Auxiliary Shaft Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$18.70
- Sealed Power®Auxiliary Shaft Bearing Set (1726M)Auxiliary Shaft Bearing Set (1726M) by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$18.86
- Sealed Power®Balance Shaft Bearing Set (1807M)Balance Shaft Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$23.48
- Sealed Power®Balance Shaft Bearing Set (1895M)Balance Shaft Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$31.94
- Sealed Power®Balance Shaft Bearing Set (1810M)Balance Shaft Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$30.30
- Sealed Power®Balance Shaft Bearing Set (1934M)Balance Shaft Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$24.80
- Sealed Power®Balance Shaft Bearing Set (1892M)Balance Shaft Bearing Set (1892M) by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$29.63
- Sealed Power®Rear Balance Shaft Bearing (3204DR)Rear Balance Shaft Bearing by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Direct replacementManufactured to strict engineering quality standards$8.28
- Enginetech®Auxiliary Shaft Bearing Set (CC436)Auxiliary Shaft Bearing Set by Enginetech®. The Engine Builder's Source, can locate the right part for nearly any rebuild application. Offering a full line of internal engine parts for domestic, import and high performance applications,...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$11.64
- Enginetech®Crankshaft Thrust Washer (TW1028STD)Crankshaft Thrust Washer by Enginetech®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$12.42
- Enginetech®Crankshaft Thrust Washer (TW1121STD)Crankshaft Thrust Washer (TW1121STD) by Enginetech®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$9.57
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