4J0521 O-ring for Caterpillar Equipment

The 4J0521 O-ring is a sealing component used in Caterpillar excavators, engines, generator sets, loaders, tractors, trucks, motor graders and other equipment listed below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

• Excavators: 350, 350 L, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 375, 375 L, 385B, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L
• Front shovels: 385C, 5080, 5090B
• Gas engines: G3508, G3508B, G3512, G3516, G3520B
• Gen set engines: 3508, 3508B, 3512, 3512B, 3516, 3516B, G3520B
• Generator sets: 3508, 3508B, 3512, 3512B, 3512C, 3516, 3516B, 3516C, G3508, G3512, G3516, G3516B, G3520B
• Hydraulic control: 173B, 183B, 193
• Industrial engines: 3508, 3512, 3516
• Integrated toolcarrier: IT38H
• Landfill compactors: 816F, 816F II, 826G
• Load haul dumps: R1300, R1300G, R1600, R1600G, R1600H, R1700 II, R1700G, R2900, R2900G, R3000H
• Locomotive engine: 3516B
• Marine auxiliary engines: 3508B, 3508C, 3512, 3512B, 3512C, 3516B, 3516C
• Marine engines: 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C
• Mobile hydraulic power units: 365C L, 385C, 385C L
• Motor graders: 120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 12G, 12H, 12H ES, 12H NA, 12K, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 14G, 14H, 14H NA, 160G, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA, 16G, 16H, 16H NA, 24H
• Petroleum engines: 3512, 3512C, 3516C
• Pipelayer: 572G
• Power modules: PM3508, PM3512, PM3516, PMG3516
• Soil compactors: 815F, 815F II, 825G
• Track loaders: 955K, 955L, 963, 963B, 963C, 973, 973C, 977K, 977L, 983, 983B
• Track-type tractors: D10, D10N, D11N, D11R, D11T, D7F, D7G, D8L, D9L, D9N
• Tractor: 776C
• Trucks: 769, 777, 777B, 777D, 797, 797B, 797F
• Wheel dozers: 814F, 814F II, 824G, 844, 844H, 844K, 854G, 854K
• Wheel loaders: 936F, 938G, 938G II, 938H, 950, 950F, 950F II, 960F, 966C, 966F, 966F II, 966G, 966G II, 966R, 970F, 972G, 972G II, 972H, 980, 980B, 980F, 980F II, 980G, 980G II, 988, 988F, 988F II, 988G, 988H, 990, 990 II, 990H, 990K, 992, 992D, 992G, 992K, 993K, 994, 994D, 994F, 994H
• Wheel scrapers: 615C, 621E, 623E, 623F, 627E, 630B, 631D, 631E, 631G, 637E, 637G, 651, 651E, 657E, 657G
• Wheel skidders: 515, 525
• Wheel tractors: 611, 615, 621, 621B, 621E, 621F, 621G, 621H, 621R, 623, 623B, 623E, 623G, 623H, 627, 627B, 627E, 627F, 627G, 627H, 631C, 631E, 631G, 633C, 633D, 633E II, 637D, 637E, 637G, 639D, 641B, 651E, 657, 657E, 657G
• Wheel tractor-scrapers: 621K, 623K, 623K LRC, 627K, 627K LRC

Specifications