Main & rod bearings come in standard, undersized, and oversized. An undersized bearing has extra material thickness on the inside of the bearing facing the crankshaft journal. Undersized bearings are used when a crankshaft has been machined or ground undersize. Oversize bearings have more material on the outside facing the bearing housing bore. Oversized bearings are used when the block has been machined or line bored oversized. CTP offers many of these specialty bearings for many popular applications.

Part No.SizeDescriptionApplication
5I7786 0.030" US (0.75MM) UNDERSIZESET-BEARING (2)3066
5I7785 0.020" US (0.51MM) UNDERSIZESET-BEARING3066
7C6978 0.030" US (0.75MM) UNDERSIZEBEARING3114, 3116, 3126
7C6963 0.030" US (0.75MM) UNDERSIZEBEARING MAIN3114, 3116, 3126
7C6973 0.030" US (0.75MM) UNDERSIZEBEARING MAIN3116
8N8926 0.010" US (0.25MM) UNDERSIZEBEARING MAIN1140, 1145, 3208
8N5341 0.025" US (0.64MM) UNDERSIZEBEARING-CRANKSHAFT1693 & D343
8N5346 0.025" US (0.64MM) UNDERSIZEBEARING-CRANKSHAFT1693 & D343
1N3822 0.020" US (0.50MM) UNDERSIZEBEARING CONNECTING ROD3204
8N7925 0.050" US (1.25MM) UNDERSIZEBEARING MAIN3204
1N3821 0.010" US (0.25MM) UNDERSIZEBEARING CONNECTING ROD3204
1W3906 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING ROD3204
1N3822-030 0.030" US (0.75MM) UNDERSIZEBEARING CONNECTING ROD3204
1W1656-030 0.030" US (0.75MM) UNDERSIZEBEARING MAIN GROOVED3204
1W1662-030 0.030" US (0.75MM) UNDERSIZEBEARING MAIN NON-GROOVED3204
1W1656-040 0.040" US (1.00MM) UNDERSIZEBEARING MAIN GROOVED3204
1W1662-040 0.040" US (1.00MM) UNDERSIZEBEARING MAIN NON-GROOVED3204
1W1657 0.050" US (1.25MM) UNDERSIZEBEARING MAIN GROOVED3204
1W1663 0.050" US (1.25MM) UNDERSIZEBEARING MAIN NON-GROOVED3204
1W1655 0.010" US (0.25MM) UNDERSIZEBEARING MAIN GROOVED3204
1W1656 0.020" US (0.51MM) UNDERSIZEBEARING MAIN GROOVED3204
1W1662 0.020" US (0.51MM) UNDERSIZEBEARING MAIN NON-GROOVED3204
9N5925 0.020" US (0.50MM) UNDERSIZEBEARING CONNECTING ROD3208
9N5926 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING ROD3208
9N5924 0.010" US (0.25MM) UNDERSIZEBEARING CONNECTING ROD3208
8N9069 0.050" US (1.25MM) UNDERSIZE/ 0.010" US (0.25MM) OVERSIZEBEARING THRUST GROOVED3208, 3208T
8N8976 0.010" US (0.25MM) UNDERSIZEBEARING MAIN FRONT NON-GROOVED3208, 3208T
8N9022 0.010" US (0.25MM) UNDERSIZEBEARING MAIN INTERMEDIATE GROOVED3208, 3208T
8N9066 0.050" US (1.25MM) UNDERSIZEBEARING THRUST GROOVED3208, 3208T
8N9019 0.020" US (0.50MM) UNDERSIZE/ 0.010" US (0.25MM) OVERSIZEBEARING MAIN INTERMEDIATE GROOVED3208, 3208T
8N9068 0.020" US (0.50MM) UNDERSIZE/ 0.010" US (0.25MM) OVERSIZEBEARING THRUST GROOVED3208, 3208T
8N9065 0.010" US (0.25MM) UNDERSIZEBEARING THRUST GROOVED3208, 3208T
8N8972 0.020" US (0.51MM) UNDERSIZEBEARING MAIN FRONT NON-GROOVED3208, 3208T
8N9064 0.020" US (0.51MM) UNDERSIZEBEARING THRUST GROOVED3208, 3208T
8N9020 0.050" US (1.25MM) UNDERSIZEBEARING MAIN INTERMEDIATE GROOVED3208, 3208T
8N8972-030 0.030" US (0.75MM) UNDERSIZEBEARING MAIN FRONT NON-GROOVED3208, 3208T
8N9023-030 0.030" US (0.75MM) UNDERSIZEBEARING MAIN INTERMEDIATE GROOVED3208, 3208T
9N5921-030 0.030" US (0.75MM) UNDERSIZEBEARING3208, 3208T
8N8972-040 0.040" US (1.00MM) UNDERSIZEBEARING MAIN FRONT NON-GROOVED3208, 3208T
8N9023-040 0.040" US (1.00MM) UNDERSIZEBEARING MAIN INTERMEDIATE GROOVED3208, 3208T
9N5921-040 0.040" US (1.00MM) UNDERSIZEBEARING3208, 3208T
8N8974 0.050" US (1.25MM) UNDERSIZEBEARING MAIN FRONT NON-GROOVED3208, 3208T
9N5920 0.010" US (0.25MM) UNDERSIZEBEARING3208, 3208T
9N5921 0.020" US (0.51MM) UNDERSIZEBEARING3208, 3208T
8N9023 0.020" US (0.51MM) UNDERSIZEBEARING MAIN INTERMEDIATE GROOVED3208, 3208T
9N5922 0.050" US (1.25MM) UNDERSIZEBEARING3208, 3208T
8N8975 0.050" US (1.25MM) UNDERSIZE/ 0.010" US (0.25MM) OVERSIZEBEARING MAIN FRONT NON-GROOVED3208, 3208T
8N8223 0.030" US (0.76MM) UNDERSIZEBEARING CONNECTING ROD3304, 3304B, 3306, 3306B, 3306C
8N8223-050 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING ROD3304, 3304B, 3306, 3306B, 3306C
8N8223-060 0.060" US (1.50MM) UNDERSIZEBEARING CONNECTING ROD3304, 3304B, 3306, 3306B, 3306C
5I7784 0.010" US (0.25MM) UNDERSIZESET-BEARING (2)3306
8N8221 0.010" US (0.25MM) UNDERSIZEBEARING CONNECTING ROD3306
8N8222 0.020" US (0.51MM) UNDERSIZEBEARING CONNECTING ROD3306
8N8223-040 0.040" US (1.00MM) UNDERSIZEBEARING3306
7S9844 0.010" US (0.25MM) UNDERSIZEBEARING MAIN3306, D333A
4W5690 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING ROD3406, 3406B, 3406C
4W5698 0.020" US (0.50MM) UNDERSIZEBEARING MAIN3406, 3406B, 3406C, 3406E, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 3456
4W5701 0.025" US (0.64MM) OVERSIZEBEARING MAIN3406, 3406B, 3406C, 3406E, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 3456
4W5698-040 0.040" US (1.00MM) UNDERSIZEBEARING MAIN3406, 3406B, 3406C, 3406E, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 3456
4W5699 0.050" US (1.25MM) UNDERSIZEBEARING MAIN3406, 3406B, 3406C, 3406E, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 3456
7E0559 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING ROD3406, 3406B, 3406C, 3406E, 3456
7E0558 0.025" US (0.64MM) UNDERSIZEBEARING CONNECTING ROD3406, 3406B, 3406C, 3406E, 3456
4W5702-030 0.030" US (0.75MM) UNDERSIZEBEARING CONNECTING ROD3406, 3406B, 3406C, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412E
4W5492-010 0.010" US (0.25MM) UNDERSIZEBEARING MAIN3406, 3406B, 3406E, 3408, 3412, 3412C
4W5492-020 0.020" US (0.50MM) UNDERSIZEBEARING MAIN3406, 3406B, 3406E, 3408, 3412, 3412C
9Y9497-010 0.010" US (0.25MM) UNDERSIZEBEARING CONNECTING ROD3406, 3406B, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412E
9Y9497-020 0.020" US (0.50MM) UNDERSIZEBEARING CONNECTING ROD3406, 3406B, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412E
9F8580-010 0.010" US (0.25MM) UNDERSIZEBEARINGD315
9F8580-020 0.020" US (0.50MM) UNDERSIZEBEARINGD315
1H3728 0.030" US (0.75MM) UNDERSIZEBEARING MAIN INTERMEDIATED315
1H3731 0.030" US (0.75MM) UNDERSIZEBEARING MAIN REARD315
9F8581-050 0.050" US (1.25MM) UNDERSIZEBEARINGD315
8N8227-040 0.040" US (1.00MM) UNDERSIZEBEARINGD330 D333 3304 3306
8N8227-050 0.050" US (1.25MM) UNDERSIZEBEARINGD330, D333, 3304, 3306
8N8227-060 0.060" US (1.50MM) UNDERSIZEBEARINGD330C, 3304, 3304B, 3306, 3306B, G3304, G3306
7S9846 0.030" US (0.75MM) UNDERSIZEBEARING MAIND333
7S9845 0.020" US (0.50MM) UNDERSIZEBEARING MAIND333A, D334
8N7934 0.025" US (0.64MM) UNDERSIZEBEARING CONNECTING RODD339, D342, D364, D375, D386, D397
8N7933-010 0.010" US (0.25MM) UNDERSIZEBEARINGD342
8N7933-020 0.020" US (0.50MM) UNDERSIZEBEARINGD342
8N7924 0.025" US (0.64MM) UNDERSIZEBEARING MAIND342
8N7929 0.025" US (0.64MM) UNDERSIZEBEARING THRUST GROOVEDD342
8N7933-040 0.040" US (1.00MM) UNDERSIZEBEARINGD342
7H4449 0.050" US (1.25MM) UNDERSIZEBEARING ASSEMBLY REARD342
8N7930 0.050" US (1.25MM) UNDERSIZEBEARINGD342
8N7923-030 0.030" US (0.75MM) UNDERSIZEBEARINGD342
1S7578 0.050" US (1.25MM) UNDERSIZEBEARING ASSEMBLY REARD342
2H2451 0.025" US (0.64MM) UNDERSIZEBEARING MAIN FRONTD342 D339T
8N7923-010 0.010" US (0.25MM) UNDERSIZEBEARINGD342 D342T
8N7923-020 0.020" US (0.50MM) UNDERSIZEBEARINGD342 D342T
4H5512 0.050" US (1.25MM) UNDERSIZEBEARING ASSEMBLY CENTERD342, D339T
2M6500 0.025" US (0.64MM) UNDERSIZEBEARINGD342, D342C, D8H, G342C
2M6501 0.050" US (1.25MM) UNDERSIZEBEARINGD342, D342C, G342C
2M6499-010 0.010" US (0.25MM) UNDERSIZEBEARINGD342, D342C, G342C
8N5342 0.050" US (1.25MM) UNDERSIZEBEARING-CRANKSHAFTD343
8N5347 0.050" US (1.25MM) UNDERSIZEBEARING-CRANKSHAFTD343
7W2136-010 0.010" US (0.25MM) UNDERSIZEBEARINGD343, G343
7W2136-020 0.020" US (0.50MM) UNDERSIZEBEARINGD343, G343
7W2138-020 0.020" US (0.50MM) UNDERSIZEBEARINGD343, G343
7W2136-030 0.030" US (0.75MM) UNDERSIZEBEARINGD343, G343
8N5339 0.025" US (0.64MM) UNDERSIZEBEARING CONNECTING RODD343, G343
4W5693 0.025" US (0.64MM) UNDERSIZEBEARING CONNECTING RODD348
4W5694 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING RODD348
7N2583 0.050" US (1.25MM) UNDERSIZEBEARINGD348
4W5697 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING RODD348
1N4336-010 0.010" US (0.25MM) UNDERSIZEBEARING CONNECTING RODD353
1N4319-030 0.030" US (0.75MM) UNDERSIZEBEARING MAIND353
1N4322 0.050" US (1.25MM) UNDERSIZEBEARING-CRANKSHAFTD353
1N4323 0.050" US (1.25MM) UNDERSIZEBEARING-CRANKSHAFTD353
1N4324 0.050" US (1.25MM) UNDERSIZEBEARING-CRANKSHAFTD353
1N4338 0.050" US (1.25MM) UNDERSIZEBEARING CONNECTING RODD353
1N4337 0.025" US (0.64MM) UNDERSIZEBEARING CONNECTING RODD353
9M4878 0.050" US (1.25MM) UNDERSIZEBEARING INTERMEDIATED353C, G353D
8N7770 0.025" US (0.64MM) UNDERSIZEBEARINGD379, D379B, D398B, G379, G398, G399
8N7764-010 0.010" US (0.25MM) UNDERSIZEBEARING MAIND379B, D398, D398A, D398B, D399, G398, G399

* Other part no. not included in the list are available. Please contact your sales representative if you have any questions. Part Numbers are used for reference purposes only.