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3423 Products found

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  • $13.32 MSRP: $18.80
    You Save: $5.48 (30%)
    Product Specifications
    • Item Dimensions: 3.3 x 1.6 x 0.1 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13331-PNA-004
    • Part Description: Washer, Thrust (Daido)
    More Info
  • Sealed Power Vintage Crankshaft Main Bearing Set - 4130M
    $265.85
    Product Specifications
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Size: Standard
    • UPC: 724956117888
    • Part Description: Vintage Crankshaft Main Bearing Set
    More Info
  • $18.01 MSRP: $25.32
    You Save: $7.31 (29%)
    Product Specifications
    • Other Names: Bearing, Bearings
    • Item Dimensions: 3.2 x 1.4 x 0.8 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13321-RDJ-A01
    • Part Description: Bearing A, Main (Upper) (Black) (Daido)
    More Info
  • $18.01 MSRP: $25.32
    You Save: $7.31 (29%)
    Product Specifications
    • Other Names: Bearing, Bearings
    • Item Dimensions: 3.2 x 1.5 x 0.8 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13341-RDJ-A01
    • Part Description: Bearing A, Main (Lower) (Black) (Daido)
    More Info
  • Sealed Power Crankshaft Main Bearing Set - 5110M
    $189.94
    Product Specifications
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Size: Standard
    • UPC: 724956153633
    • Part Description: Crankshaft Main Bearing Set
    More Info
  • $10.89 MSRP: $14.53
    You Save: $3.64 (26%)
    Product Specifications
    • Other Names: Bearing, Thrust Bearing
    • Item Dimensions: 6.1 x 4.0 x 2.0 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing Set-Crankshaft
    More Info
  • Sealed Power Crankshaft Main Bearing Set - 7409M
    $183.98
    Product Specifications
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Size: Standard
    • UPC: 614046846852
    • Part Description: Crankshaft Main Bearing Set
    More Info
  • $21.81 MSRP: $31.90
    You Save: $10.09 (32%)
    Product Specifications
    • Other Names: Bearing, Bearings
    • Item Dimensions: 3.3 x 3.1 x 1.3 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearings
    More Info
  • Sealed Power Crankshaft Main Bearing Set - 7325M
    $138.40
    Product Specifications
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Size: Standard
    • UPC: 614046039063
    • Part Description: Crankshaft Main Bearing Set
    More Info
  • $14.45 MSRP: $19.44
    You Save: $4.99 (26%)
    Product Specifications
    • Other Names: Bearing, Thrust Bearing
    • Item Dimensions: 6.1 x 4.0 x 2.0 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing Pair Set-Crank Shaft Center
    More Info
  • Sealed Power A Series Vintage Aluminum Partial Grooved Crankshaft Main Bearing Set - 4924MA
    $124.92
    Product Specifications
    • Material: A-Series Aluminum Bearings
    • Package Alert: Full set
    • Part Material: A-Series Aluminum
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-10-20-30
    • UPC: 614046632356
    • Part Description: A Series Vintage Aluminum Partial Grooved Crankshaft Main Bearing Set
    More Info
  • $16.99 MSRP: $23.98
    You Save: $6.99 (30%)
    Product Specifications
    • Item Dimensions: 2.0 x 1.2 x 0.8 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 13322-PCX-003
    • Part Description: Bearing B, Main (Black) (Daido)
    More Info
  • Sealed Power Vintage Crankshaft Main Bearing Set - 4664M
    $120.76
    Product Specifications
    • Material: Overplated Copper-Lead Alloy
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-10-20-30
    • UPC: 724956135578
    • Part Description: Vintage Crankshaft Main Bearing Set
    More Info
  • $11.73 MSRP: $16.54
    You Save: $4.81 (30%)
    Product Specifications
    • Other Names: Thrust Bearing
    • Item Dimensions: 4.0 x 1.8 x 0.1 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Washer, Thrust
    More Info
  • Sealed Power Vintage Overplated Copper Lead Alloy Crankshaft Main Bearing Set - 4221M
    $122.61
    Product Specifications
    • Material: Overplated Copper-Lead Alloy
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-10-20-30
    • UPC: 724956124022
    • Part Description: Vintage Overplated Copper Lead Alloy Crankshaft Main Bearing Set
    More Info
  • $25.14 MSRP: $33.86
    You Save: $8.72 (26%)
    Product Specifications
    • Other Names: Thrust Bearing
    • Item Dimensions: 9.4 x 9.1 x 7.3 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing Pair Set-Crank Shaft Center
    More Info
  • Sealed Power Crankshaft Main Bearing Set - 7419M
    $114.80
    Product Specifications
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Size: Standard
    • UPC: 614046839076
    • Part Description: Crankshaft Main Bearing Set
    More Info
  • $51.23 MSRP: $84.81
    You Save: $33.58 (40%)
    Product Specifications
    • Other Names: Bearing
    • Item Dimensions: 4.3 x 4.1 x 2.1 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12533768, 89017469, 88890525
    • Part Description: Bearings
    More Info
  • Sealed Power A Series Aluminum Crankshaft Main Bearing Set - 7388MA
    $109.88
    Product Specifications
    • Package Alert: Full set
    • Part Material: A-Series Aluminum
    • Size: Standard
    • UPC: 614046637351
    • Part Description: A Series Aluminum Crankshaft Main Bearing Set
    More Info
  • $7.67 MSRP: $11.00
    You Save: $3.33 (31%)
    Product Specifications
    • Other Names: Bearing, Thrust Bearing, Thrust Washer
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing
    More Info
  • $20.63 MSRP: $29.15
    You Save: $8.52 (30%)
    Product Specifications
    • Other Names: Upper Bearing
    • Item Dimensions: 2.4 x 1.1 x 0.9 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing D, Main (Upper) (Green) (Daido)
    More Info
  • Sealed Power Vintage Grooved Upper Crankshaft Main Bearing Set - 4040M
    $106.05
    Product Specifications
    • Material: Overplated Copper-Lead Alloy
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-1-10-20-30
    • UPC: 724956114221
    • Part Description: Vintage Grooved Upper Crankshaft Main Bearing Set
    More Info
  • $20.63 MSRP: $29.15
    You Save: $8.52 (30%)
    Product Specifications
    • Other Names: Lower Bearings
    • Item Dimensions: 2.6 x 1.3 x 0.8 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing D, Main (Lower) (Green) (Daido)
    More Info
  • Sealed Power A Series Aluminum Crankshaft Main Bearing Set - 7298MA
    $101.18
    Product Specifications
    • Material: A-Series Aluminum Bearings
    • Package Alert: Full set
    • Part Material: A-Series Aluminum
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-10-20-30
    • UPC: 614046634350
    • Part Description: A Series Aluminum Crankshaft Main Bearing Set
    More Info
  • $20.63 MSRP: $29.15
    You Save: $8.52 (30%)
    Product Specifications
    • Other Names: Upper Bearing
    • Item Dimensions: 2.5 x 1.2 x 0.8 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Bearing C, Main (Upper) (Brown) (Daido)
    More Info
  • Sealed Power A Series Vintage Aluminum Partial Grooved Crankshaft Main Bearing Set - 5025MA
    $97.44
    Product Specifications
    • Material: A-Series Aluminum Bearings
    • Package Alert: Full set
    • Part Material: A-Series Aluminum
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-10-20-30
    • UPC: 614046632585
    • Part Description: A Series Vintage Aluminum Partial Grooved Crankshaft Main Bearing Set
    More Info
  • Sealed Power Vintage Crankshaft Main Bearing Set - 960M
    $101.32
    Product Specifications
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Size: Standard
    • UPC: 724956211746
    • Part Description: Vintage Crankshaft Main Bearing Set
    More Info
  • $40.96 MSRP: $67.80
    You Save: $26.84 (40%)
    Product Specifications
    • Other Names: Bearing, Thrust Bearing
    • Item Dimensions: 4.2 x 4.1 x 2.2 inches
    • Item Weight: 0.70 Pounds
    • Replaced by: 12729654
    • Part Description: Bearings
    More Info
  • Sealed Power Vintage Crankshaft Main Bearing Set - 4094M
    $97.80
    Product Specifications
    • Material: Overplated Copper-Lead Alloy
    • Package Alert: Full set
    • Part Material: Steel Backed Overplated Bronze Alloy
    • Set Type: Main Set
    • Size: Standard
    • Sizes: Standard-10-20-30-40-60
    • UPC: 724956115983
    • Part Description: Vintage Crankshaft Main Bearing Set
    More Info
  • $20.43 MSRP: $28.86
    You Save: $8.43 (30%)
    Product Specifications
    • Item Dimensions: 3.4 x 1.6 x 0.1 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: Washer Set, Thrust (Daido)
    More Info
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About Engine Main Bearing

The main bearings are typically plain bearings that are secured by the engine block as well as the bearing caps. The number of main bearings depends on the engine.

Engine main bearing principle

The overall load factor and greatest engine speed are decided by the number of the main bearing. When you increase the number of bearings in an engine the engine size and value will increase, but it also reduces bending tension. Many engines have a minimum of two main bearings at both ends of the crankshaft. Extra bearings can be mounted on the crankshaft like modern diesel engines that are built for high RPM.

Common problems with a faulty engine main bearing

A faulty engine main bearing can lead to knocking noises, and an increase in pressure as well as heat.