Caterpillar 321B Parts

39 parts fit the Caterpillar 321B. Every part is listed with its Caterpillar part number so you can match it to your parts manual. Choose genuine or quality aftermarket parts — we quote within 24 hours and ship worldwide.

• 173-3391 — Drive Shaft (construction)
• 5I-8043 — Pipe (construction)
• 5I-7537 — STD Piston Kit with Ring (construction)
• 111-4812 — Fuse Box Wire Harness Cable Assembly (construction)
• 133-6911 — Pilot Gear Pump (construction)
• 183-8171 — Bare Cylinder Head (construction)
• 183-8174 — Bare Cylinder Head (construction)
• 112-9717 — Dust Valve (construction)
• 5I-7734 — Oil Pipe (construction)
• 096-4402 — Boom Cylinder Bushing (construction)
• 099-5858 — Valve Plate (construction)
• 1241669 — Coupling Assy (construction)
• 5I-7538 — STD Piston Ring Kit (construction)
• 129-8034 — Cartridge Valve (construction)
• 5I-8060 — Pipe (construction)
• 121-1241 — Kit-service Meter (construction)
• 150-2120 — Blower Motor (construction)
• 111-4870 — Time Relay (construction)
• 8E-5600 — Carrier Roller (construction)
• 165-4026 — Magnetic Switch Assembly (engine)
• 168-8451 — Ball Bearing (construction)
• 7Y-1433 — Carrier (farm)
• 1U-3302RC — Rock Chisel Bucket Tooth (construction)
• 7Y-1432 — Planet Carrier (construction)
• 176-4985 — LH & RH Joystick Control Assembly (construction)
• 114-1497 — Floating Seal (construction)
• 9P-7121 — Fuel Strainer (construction)
• 145-3028 — 320c trk adj gr (construction)
• AMS1 — Final drive gearbox without propel motor (construction)
• 114-1484 — Final drive asy (construction)
• 227-6035 — Final drive asy (construction)
• 227-6949 — Final drive asy (construction)
• 353-0615 — Final drive asy (construction)