Engine Bearings & Components

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.

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    • (0 reviews)
      # sp124585
      Connecting Rod Bearing by Genuine®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $6.49 - $42.55
    • (0 reviews)
      # sp136498
      Crankshaft Main Bearing by Genuine®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $8.07 - $22.89
    • (0 reviews)
      # sp124582
      Balance Shaft Bearing by Genuine®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $14.39 - $22.30
    • (0 reviews)
      # sp128096
      Auxiliary Shaft Bearing Set by DNJ Engine Components®. If you crave for the finest replacement for your worn out parts, look no further than this superior bearing set that is built with the same quality and durability as your OE parts....
      Designed to provide reliable performance within your vehicle's engineMade from top-grade materials with utmost care to ensure long-lasting service
      $15.80
    • (0 reviews)
      # sp94927
      Balance Shaft Bearing Set by DNJ Engine Components®. If you crave for the finest replacement for your worn out parts, look no further than this superior bearing set that is built with the same quality and durability as your OE parts. It...
      Designed to provide reliable performance within your vehicle's engineMade from top-grade materials with utmost care to ensure long-lasting service
      $7.24 - $29.80
    • (0 reviews)
      # sp124643
      Camshaft Bearing by DNJ®. Protect your engine part from contaminants and prolong its service life with this premium DNJ seal. Rigorously manufactured from top-grade materials and expertly tested, this reliable product meets or exceeds...
      Designed to provide reliable sealing performanceProtects the engine part from contaminants and extends its life
      $6.18 - $33.54
    • (0 reviews)
      # sp133822
      Connecting Rod Bearing by DNJ Engine Components®. If you crave for the finest replacement for your worn out parts, look no further than this superior bearing set that is built with the same quality and durability as your OE parts. It is...
      Designed to provide reliable performance within your vehicle's engineMade from top-grade materials with utmost care to ensure long-lasting service
      $7.64 - $57.57
    • (0 reviews)
      # sp133823
      Crankshaft Main Bearing by DNJ Engine Components®. If you crave for the finest replacement for your worn out parts, look no further than this superior bearing set that is built with the same quality and durability as your OE parts. It...
      Designed to provide reliable performance within your vehicle's engineMade from top-grade materials with utmost care to ensure long-lasting service
      $13.02 - $102.12
    • (0 reviews)
      # sp124628
      Connecting Rod Bearing by Mopar®. Designed utilizing the latest technology, this product by Mopar features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $1.24 - $1,336.20
    • (0 reviews)
      # sp124616
      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 manufactured...
      Direct replacementManufactured to strict engineering quality standards
      $5.33 - $31.43
    • (0 reviews)
      # sp124619
      Camshaft 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 manufactured to...
      Direct replacementManufactured to strict engineering quality standards
      $4.80 - $144.55
    • (1 review)
      # sp124620
      Connecting Rod 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 manufactured...
      Direct replacementManufactured to strict engineering quality standards
      $3.04 - $211.65
    • (0 reviews)
      # sp124621
      Crankshaft Main 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
      $19.80 - $360.49
    • (0 reviews)
      # sp124602
      Camshaft Bearing by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $16.92 - $80.14
    • (0 reviews)
      # sp124605
      Connecting Rod Bearing by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $8.33 - $71.31
    • (0 reviews)
      # sp124606
      Crankshaft Main Bearing by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $3.88 - $94.59
    • (0 reviews)
      # sp124529
      Camshaft Bearing by Omix-ADA®. The engine is the heart of your Jeep, but with many years and miles it may not be beating as strong as it once did. If you're hearing strange noises from under the hood, power is not what it used to be, or...
      $11.89 - $61.69
    • (0 reviews)
      # sp116187
      Connecting Rod Bearing by Omix-ADA®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you waste your time and gas running out to the...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $8.11 - $72.19
    • (0 reviews)
      # sp116190
      Main Bearing by Omix-ADA®. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle's emissions control system is in need of repair, but before you waste your time and gas running out to the auto parts...
      $54.55 - $332.55
    • (0 reviews)
      # sp136557
      Connecting Rod Bearing by Auto 7®. Over the lifespan of your vehicle your engine's parts can become worn and in need of replacement. This can cause serious problems including power and fuel economy loss. Auto 7 has the quality parts...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $5.22 - $35.74
    • (0 reviews)
      # sp5940
      Engine Connecting Rod Bearing by Auto 7®. Over the lifespan of your vehicle your engine's parts can become worn and in need of replacement. This can cause serious problems including power and fuel economy loss. Auto 7 has the quality...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $5.16 - $39.13
    • (0 reviews)
      # sp4930
      Engine Crankshaft Main Bearing Set by Auto 7®. Over the lifespan of your vehicle your engine's parts can become worn and in need of replacement. This can cause serious problems including power and fuel economy loss. Auto 7 has the...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $5.95 - $36.36
    • (0 reviews)
      # sp124608
      Main Bearing by Auto 7®. Over the lifespan of your vehicle your engine's parts can become worn and in need of replacement. This can cause serious problems including power and fuel economy loss. Auto 7 has the quality parts for your...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts made where the vehicles are made, South Korea
      $6.90 - $121.85
    • (0 reviews)
      # sp124639
      Connecting Rod Bearing by Mahle®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $5.74 - $76.37
    • (0 reviews)
      # sp133445
      Auxiliary Shaft Bearing Set by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
      Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability
      $10.53 - $24.09
    • (0 reviews)
      # sp133446
      Balance Shaft Bearing Set by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
      Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability
      $7.08 - $97.83
    • (0 reviews)
      # sp133451
      Camshaft Bearing & Auxiliary Shaft Bearing Kit by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
      Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability
      $37.58 - $47.50
    • (0 reviews)
      # sp133453
      Camshaft Bearing Set by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
      Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability
      $5.26 - $90.10
    • (0 reviews)
      # sp133483
      Special Oil Control Camshaft Bearing by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...
      Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability
      $18.89 - $38.81
    • (0 reviews)
      # mpn4509115375
      Camshaft Bearing Set by Glyco®. Glyco advanced engine bearing technologies withstand heavy loads and cope with the increasingly challenging conditions of modern engines.
      Warranty 24 Months/24,000 MilesDesigned to help get the most out of your vehicle
      $38.56




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    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.

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    Engine Bearings & Components Reviews

    Average rating:  4.5  4.5 - 4 reviews
    5 of 5
    Product Was As Described.
    Product was as described.
    KPosted by Karen Burdette (Kenna, WV) / March 3, 20172000 Subaru Outback
    Was this review helpful for you? Yes
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