HYI60-0990 - O-RING

One New Aftermarket Replacement O-Ring Fits Caterpillar (Fits CAT) Construction and Engine Applications

This seal O-ring is a direct aftermarket replacement Fits Caterpillar (Fits CAT) OEM part number 8J4351. It provides reliable sealing in hydraulic cylinders, engine assemblies, and drivetrain components across a wide range of Fits CAT equipment. Manufactured from FKM () rubber, it is rated for high-temperature service and is resistant to fuels, lubricants, hydraulic fluids, and biodiesel blends.

Specifications

• Cross-Section Diameter: 0.139 in (3.53 mm)
• Inside Diameter: 1.734 in (44.04 mm)
• Outside Diameter: 2.012 in
• Material: FKM () 75 Shore A
• Color: Black
• AS568 Series: -224
• Temperature Range: -40 to 350 deg F (-40 to 150 deg C)

Compatible Models

Fits Caterpillar Articulated Dump Trucks: 725, 730, 735, 740, D350E, D350E II, D35HP, D400, D400D, D400E

Fits Caterpillar Engines: 3406E, C12, C13, C15, C16, C18 Series

Fits Caterpillar Wheel Loaders: 916, 924G, 926, 926E, 936, 936E, 936F, 950B, 950B/950E, 950E, 950F, 950F II, 960F, 962K, 966G II, 966H, 966K, 972G II, 972H, 972K, 980, 980C, 980F, 980F II, 980G, 980G II, 980H, 980K, 980L, 980M, 982, 982M, 986H, 986K, 988F, 988G, 988H, 988K, 990, 992C, 992D

Fits Caterpillar Motor Graders: 14, 14H, 14M, 140H, 143H, 16, 16G, 16M, 160H, 163H

Fits Caterpillar Wheel Tractor-Scrapers: 611, 613, 613B, 613C, 613C II, 613G, 615, 615C, 615C II, 621, 621B, 621E, 621F, 621G, 621H, 621K, 623B, 623E, 623F, 623G, 623H, 623K, 627B, 627E, 627F, 627G, 627H, 627K, 631C, 631D, 631E, 631G, 631K, 633D, 633E II, 637, 637D, 637E, 637G, 637K, 651, 651B, 651E, 657, 657B, 657E, 657G

Fits Caterpillar Wheel-Type Skidders: 518, 518C, 528, 528B, 530B, FB518

Fits Caterpillar Integrated Tool Carriers: IT18, IT18B, IT28, IT28B

Fits Caterpillar Load Haul Dump: R1600, R1600G, R1600H, R1700 II, R1700G, R1700K, R2900, R2900G, R3000H

Note: This O-ring is used across multiple systems and assemblies. Verify compatibility using your machine model and serial number before ordering.

Replaces Part Number(s):

M8J4351, 8J4351, 8J-4351, 5M0281, 153-0500, 1530500

Aftermarket Interchange Numbers

PAI 321326, CAP321326

New aftermarket replacement part - not remanufactured, not used.