Part number lookup

EX300 Replacement Parts

Cross-reference and compare 28 replacement listings for OEM / aftermarket part number EX300. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.

28 Matching Products

Water Tank Radiator Core ASS'Y for Hitachi EX300-3 ExcavatorHitachiWater Tank Radiator Core ASS'Y for Hitachi EX300-3 Excavator$832.00For Hitachi Excavator EX270 EX300 Top Roller Upper Roller Carrier Roller 9062405HitachiFor Hitachi Excavator EX270 EX300 Top Roller Upper Roller Carrier Roller 9062405$326.002 PCS Grease Valve 9061173 for Hitachi Excavator EX100 EX1100 EX120 EX200 EX300 EX400 EX50UR EX60 EX700 EX90 KH100D KH250HD RX2000 SCX300Hitachi2 PCS Grease Valve 9061173 for Hitachi Excavator EX100 EX1100 EX120 EX200 EX300 EX400 EX50UR EX60 EX700 EX90 KH100D KH250HD RX2000 SCX300$13.006SD1 6SD1T Rebuild Kit For Isuzu Engine EX300 EX330 Excavator and LS crane truckIsuzu6SD1 6SD1T Rebuild Kit For Isuzu Engine EX300 EX330 Excavator and LS crane truck$1,143.25Arm Cylinder Seal Kit 9078846 for Hitachi Excavator EX300HitachiArm Cylinder Seal Kit 9078846 for Hitachi Excavator EX300$136.67Bushing 3026075 for Hitachi EX300 EX400 EX400-3 EX400-3C EX400-5 EX450H-5 EX450MTH-5 EX550 EX750-5 ExcavatorHitachiBushing 3026075 for Hitachi EX300 EX400 EX400-3 EX400-3C EX400-5 EX450H-5 EX450MTH-5 EX550 EX750-5 Excavator$109.65Center Gear 3035852 for Hitachi EX270 EX300 EX300LC-5M EX350H-5 EX370-5M ExcavatorHitachiCenter Gear 3035852 for Hitachi EX270 EX300 EX300LC-5M EX350H-5 EX370-5M Excavator$291.57Center Shaft 3038090 for Hitachi EX200 EX220 EX270 EX300 EX300-2 EX300-3 LX80RS-2 RX2000HitachiCenter Shaft 3038090 for Hitachi EX200 EX220 EX270 EX300 EX300-2 EX300-3 LX80RS-2 RX2000$291.93Door Lock Ass'y 7017924 For Hitachi Excavator EX220-2 EX220-3 EX300 EX300-2 EX300-3HitachiDoor Lock Ass'y 7017924 For Hitachi Excavator EX220-2 EX220-3 EX300 EX300-2 EX300-3$146.25Floating Seal 4066695 for Hitachi EX270 EX270-5 EX280H-5 EX300 EX300-2 EX300-3 EX300-3C EX300-5 ZX270 ZX270-3 ZX330 ZX330-3HitachiFloating Seal 4066695 for Hitachi EX270 EX270-5 EX280H-5 EX300 EX300-2 EX300-3 EX300-3C EX300-5 ZX270 ZX270-3 ZX330 ZX330-3$99.00Floating Seal Group 4066695 for Hitachi EX270 EX270-5 EX280H-5 EX300 EX300-2 EX300-3 EX300-3C EX300-5 ZX270 ZX270-3 ZX330 ZX330-3HitachiFloating Seal Group 4066695 for Hitachi EX270 EX270-5 EX280H-5 EX300 EX300-2 EX300-3 EX300-3C EX300-5 ZX270 ZX270-3 ZX330 ZX330-3$176.21Floor Mat 1011396 for Hitachi Excavator EX100 EX100-1HitachiFloor Mat 1011396 for Hitachi Excavator EX100 EX100-1$97.00Floor Mat 1011396 for Hitachi Excavator EX100 EX100-1HitachiFloor Mat 1011396 for Hitachi Excavator EX100 EX100-1$243.89Floor Mat 1011396 for Hitachi Excavator EX100 EX100-1HitachiFloor Mat 1011396 for Hitachi Excavator EX100 EX100-1$105.00Idler 9115208 for Hitachi Excavator EX270 EX300 EX300-2 EX300-3HitachiIdler 9115208 for Hitachi Excavator EX270 EX300 EX300-2 EX300-3$825.00Kawasaki M2X210 Hydraulic Swing Motor Spare Parts Repair Kit for Hitachi EX270 EX280 EX300 ExcavatorHitachiKawasaki M2X210 Hydraulic Swing Motor Spare Parts Repair Kit for Hitachi EX270 EX280 EX300 Excavator$1,377.00Main Hydraulic Pump Coupling 4216944 For Hitachi Excavator EX300 EX300-2 EX300-3 EX300-5HitachiMain Hydraulic Pump Coupling 4216944 For Hitachi Excavator EX300 EX300-2 EX300-3 EX300-5$174.73Main Relief Valve 4228354 for Hitachi Excavator EX200 EX200LC EX220 EX270 EX270LC EX300 EX300-2 EX300-3 EX300LC EX300LC-2 EX300LC-3 EX310H-3C EX310LCH-3CHitachiMain Relief Valve 4228354 for Hitachi Excavator EX200 EX200LC EX220 EX270 EX270LC EX300 EX300-2 EX300-3 EX300LC EX300LC-2 EX300LC-3 EX310H-3C EX310LCH-3C$70.00New HPV145 Hydraulic Pump Spare Parts Repair Kit for Hitachi EX270 EX300 EX300-5HitachiNew HPV145 Hydraulic Pump Spare Parts Repair Kit for Hitachi EX270 EX300 EX300-5$1,300.00New Main Hydraulic Pump Coupling Assy 4191663 for Hitachi Excavator EX300 EX300-2 EX300-3HitachiNew Main Hydraulic Pump Coupling Assy 4191663 for Hitachi Excavator EX300 EX300-2 EX300-3$190.00New Water Tank Radiator Core ASS'Y For Hitachi EX300-3 ExcavatorHitachiNew Water Tank Radiator Core ASS'Y For Hitachi EX300-3 Excavator$851.63Oil Cooler 4218590 for Hitachi Excavator EX300 EX300-1HitachiOil Cooler 4218590 for Hitachi Excavator EX300 EX300-1$2,263.89Oil Distribution Cup Assembly AT105530 9097161 for Hitachi Excavator EX120 Refurbished PartsHitachiOil Distribution Cup Assembly AT105530 9097161 for Hitachi Excavator EX120 Refurbished Parts$1,979.04Pilot Gear Pump 4181700 9217993 for Hitachi Excavator EX200-1 EX300-1 ZAX330 EX330-5 EX270-1 EX300-2 EX300-3 EX300-5 EX270-1HitachiPilot Gear Pump 4181700 9217993 for Hitachi Excavator EX200-1 EX300-1 ZAX330 EX330-5 EX270-1 EX300-2 EX300-3 EX300-5 EX270-1$118.00Pump Coupling Assy 4191663 For Hitachi Excavator EX300 EX300-2 EX300-3 Main hydraulicHitachiPump Coupling Assy 4191663 For Hitachi Excavator EX300 EX300-2 EX300-3 Main hydraulic$256.22Rebuild Kit For 6SD1 6SD1T Isuzu Engine EX300 EX330 Excavator and LS crane truckIsuzuRebuild Kit For 6SD1 6SD1T Isuzu Engine EX300 EX330 Excavator and LS crane truck$1,177.00Travel Control Knob For Hitachi EX200-2 EX200-5 EX220-2 EX270-2 EX300-2 EX300-5 EX400-5HitachiTravel Control Knob For Hitachi EX200-2 EX200-5 EX220-2 EX270-2 EX300-2 EX300-5 EX400-5$38.00Travel Control Knob For Hitachi EX200-2 EX200-5 EX220-2 EX270-2 EX300-2 EX300-5 EX400-5HitachiTravel Control Knob For Hitachi EX200-2 EX200-5 EX220-2 EX270-2 EX300-2 EX300-5 EX400-5$39.00

Part Numbers and Cross References

EX300-3EX300EX100MEX1100EX120EX150EX200EX200KEX220EX270EX400EX50UR6SD1TEX33090788463026075EX400-3EX400-3CEX400-5EX450H-5EX450MTH-5EX550EX550-5EX600H-3EX600H-53035852EX300-2EX300-3CEX300-5EX300-5HHEEX300LC-5MEX300LCLL-5EX300LCLL-5MEX310H-3C3038090LX80RS-270179248024464EX220-2EX220-3TH102282TH1030974066695CX350DREX270-5EX280H-5218HSLEX200-5Z1011396M2X210EX2804216944EX200LCEX270LCEX300HEX300H-2EX300H-3HPV14541916634218590EX300-1AT1055309097161EX1009097161EX4181700EX200-2EX200-3EX200-5EX270-2EX200-1

Applications and Fitment Summary

  • Hitachi · HITACHI EX300-3
  • Hitachi · Models:EX270 EX300
  • Hitachi · s: Hitachi Excavators:EX100, EX100M, EX1100, EX120, EX150, EX200, EX200K, EX220, EX270, EX300, EX400, EX50UR, EX60, EX60G, EX60SR, EX60UR, EX700, EX90, KH100D, KH125-3(D), KH250HD, RX2000, SCX300
  • Isuzu · s: For Isuzu Engine EX300 EX330 Excavator and LS crane truck Item Included : 1set Full gasekt kit 6pcs Liner Cylinder 6pcs Piston,STD size 6pcs Piston Pin 12pcs Pin Clips 6 Intake Valves 6 Exhaust Valves 12 Valve Guides 6 Intake Valves Seats 6 Exhaust Valves Seats 6set Ring set for 6pistons.STD size 1set Crankshaft bearing 1set Connect Rod Bearing 1Set Thrust washer
  • Part Number
  • Hitachi Excavator EX220-2 EX220-3 EX300 EX300-2 EX300-3 Door Lock Ass'y 7017924
  • Hitachi Excavator: EX220-2 EX220-3 EX300 EX300-2 EX300-3
  • Hitachi · s: Hitachi Excavator:EX100, EX100M, EX120, EX150, EX200, EX220, EX270, EX300, EX400
  • Hitachi · s: Fit for Hitachi Excavator EX100, EX100M, EX120, EX150, EX200, EX220, EX270, EX300, EX400
  • Hitachi · s: Fit for Hitachi Excavator: EX270, EX300, EX300-2, EX300-3
  • Hitachi · s: Excavator:Hitachi EX270, EX280, EX300
  • Hitachi Excavator EX300 EX300-2 EX300-3 EX300-5 Main Hydraulic Pump Coupling 4216944
  • Hyd.Pump shaft to Engine Flywheel
  • Hitachi · Hitachi EX270 EX300 EX300-5
  • Hitachi · Hitachi Excavator EX300 EX300-2 EX300-3
  • Hitachi · Hitachi EX300-3 Excavator
  • Hitachi · s: Fit for Hitachi Excavator: EX100, EX100M, EX120, EX150, EX200, EX220, EX270, EX300, EX90, EX200LC, EX270LC, EX300LC, EX120-1 EX200-1
  • John Deere · s: Fit for John Deere Excavator: 290D, 490, 490D, 493D, 493, 590D, 693D, 690D, 690DR, 793D, 790D, 792DLC, 892DLC
  • Hitachi · s: For Hitachi Excavator: EX200, EX200K, EX220, EX270, EX300, EX300-2, EX300-3, EX300-3C, EX300-5, EX300-5HHE, EX300LC-5M, EX300LCLL-5, EX300LCLL-5M, EX310H-3C, EX345USR(LC), EX350H-5, EX350H-5HHE, EX350K-5, EX370-5M, EX370HD-5, EX370LL-5M, EX385USR, EX400, EX550, EX550-5 JPN, EX600H-3 JPN, EX600H-5 JPN, ZX110, ZX110-E, ZX110M, ZX120, ZX120-E, ZX120-HCMC, ZX125US, ZX125US-E, ZX130-AMS, ZX130-HCME, ZX130H, ZX135US, ZX135US-E, ZX135USK, ZX135UST, ZX160W, ZX160W-AMS, ZX330, ZX330-HHE, ZX350H, ZX350K, ZX350LC-AMS, ZX350LC-HCME, ZX360LC-HHE, ZX370MTH, ZX500W, ZX600, ZX650H, ZX800, ZX850H, ZH200-A, ZH200LC-A, ZX110-3, ZX110-3-AMS, ZX110-3-HCME, ZX110M-3, ZX110M-3-HCME, ZX120-3, ZX130-3, ZX130-3-AMS, ZX130-3-HCME, ZX130K-3, ZX130LCN-3F-AMS, ZX130LCN-3FHCME, ZX135US-3, ZX135US-3-HCME, ZX135US-3F-AMS, ZX135US-3F-HCME, ZX135USK-3, ZX250LC-5B, ZX250LCN-5B, ZX290LC-5B, ZX290LCN-5B, ZX330-3, ZX330-3-HCMC, ZX330-3G, ZX330-5G, ZX330LC-5G, ZX350-3-AMS, ZX350H-3, ZX350H-3G, ZX350H-5G, ZX350K-3, ZX350K-3G, ZX350K-5G, ZX350LC-3-HCME, ZX350LC-5B, ZX350LCH-5G, ZX350LCK-5G, ZX350LCN-5B, ZX360H-3G, ZX650LC-3, ZX670LCH-3, ZX670LCR-3, ZX850-3, ZX850-3F, ZX850LC-3-DH, ZX870H-3, ZX870H-3-HCMC, ZX870H-3F, ZX870R-3, ZX870R-3F
  • Hitachi Excavator EX300 EX300-2 EX300-3 Main hydraulic Pump Coupling Assy 4191663
  • Isuzu · s: For 6SD1 6SD1T Isuzu Engine EX300 EX330 Excavator and LS crane truck Item Included : 1set Full gasekt kit 6pcs Liner Cylinder 6pcs Piston,STD size 6pcs Piston Pin 12pcs Pin Clips 6 Intake Valves 6 Exhaust Valves 12 Valve Guides 6 Intake Valves Seats 6 Exhaust Valves Seats 6set Ring set for 6pistons.STD size 1set Crankshaft bearing 1set Connect Rod Bearing 1set Thrust washer
  • Hitachi · s: Hitachi Excavator: EX200-1, EX200-2, EX200-3, EX200-5, EX220, EX220-2, EX220-3, EX270, EX270-2, EX300, EX300-1, EX300-2, EX300-3, EX300-5, EX400, EX400-3, EX400-5,not only these models.
  • Hitachi · s: Fit For Hitachi Excavator EX200-1, EX200-2, EX200-3, EX200-5, EX220, EX220-2, EX220-3, EX270, EX270-2, EX300, EX300-1, EX300-2, EX300-3, EX300-5, EX400, EX400-3, EX400-5,not only these models

Frequently Asked Questions

What parts replace OEM number EX300?

This page lists 28 replacement listings indexed under EX300. Compare cross references, applications, and pricing before ordering.

How do I confirm fitment for EX300?

Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.

Can I request a quote if EX300 is not an exact match?

Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.

Confirm fitment & quote details

Send machine details and nameplate photos before ordering high-risk or quote-only parts.