4J0524 - O-Ring Seal

One New Aftermarket Replacement O-Ring Seal for Caterpillar (Cat) Equipment

This aftermarket replacement O-ring seal (Caterpillar part number 4J0524 / 4J-0524) is a metric NBR nitrile rubber seal used throughout a wide range of Caterpillar (Cat) construction, earthmoving, and engine applications. It is suited for use in hydraulic fluid, fuel handling, power steering, radiator thermostat, and engine coolant service points across dozens of Cat machine lines.

Specifications

• Inside Diameter: 1.859 in (47.22 mm)
• Cross Section Diameter: 0.139 in (3.53 mm)
• Material: NBR - Nitrile Rubber, 90 Durometer
• AS568A Dash Size: -225
• Compatible fluids: hydraulic oil, petroleum-based lubricants, diesel fuel, engine coolant/ethylene glycol, power steering fluid, LPG (high and low pressure), water

Compatible Models

Caterpillar - Engines: 3114, 3116, 3126, 3126B, 3126E, C7, C9, C-12, 3516C, 3612

Caterpillar - Excavators & Mini Excavators: 215, 215B, 215C, 215D, 216, 219D, 225, 225D, 228, 229, 229D, 231D, 235, 235B, 235C, 235D, 236, 236D, 245, 245B, 245D, 246C, 256C, 262C, 262C2, 272C, 272D, 277C, 277C2, 279C, 279C2, 287C, 287C2, 289C, 289C2, 297C, 299C, 299D, 303.5D, 303.5E, 304E, 308D, 311C, 312C, 318B, 319C, 320N, 322B, 324E

Caterpillar - Off-Highway Trucks: 769, 772, 776, 777, 789, 793, 797, 5080, 5090B, 5110B, 5130B, 5230B

Caterpillar - Wheel Loaders: 908, 988, 1090, 1190, 1190T, 1290T, 1390

Caterpillar - Scrapers & Dozers: 518, 518C, 521B, 522B, 525B, 528, 535B, 539, 551, 552, 559C, 560B, 561M, 561N, 572R, 578, 579C, 583R, 583T, 587R, 587T, 613, 613B, 613G, 615, 615C, 621H, 621K, 621R, 623B, 623E, 623F, 623G, 623H, 623K, 627B, 627E, 627F, 627G, 627H, 627K, 630B, 631B, 631C, 631D, 631E, 631G, 633C, 633D, 633E, 637

Caterpillar - Track-Type Tractors & Pipelayers: 57, 58, 153, 163, 173B, 183B, 229, 306, 589

Caterpillar - Compactors & Pavers: 69D, 814, 814S, 824S, 836, 8A, 8S, 8U, 9S, AD40, AE40, BG1055E, CS-563C, CS-563D, CX31-C13I

Caterpillar - Other: 2290, 2384C, 2390, 2391, 2484C, 2864C, 5080, 5090B

Replaces Part Number(s):

4J0524, 4J-0524

Aftermarket Interchange Numbers

3T8328, 5W7491, 8C1270, 8T7214, 077-5021, 0775021, 77-5021, 775021, 1885844, 1885844C1, 4333-1885844C1, AS568A-225

New aftermarket replacement part - not remanufactured, not used.