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Komatsu 145-14-12790 Spring
Regular price $4.61 USDRegular priceSale price $4.61 USD -
Komatsu 135-43-21480 Spring
Regular price $11.64 USDRegular priceSale price $11.64 USD -
Komatsu 203-30-42260 Valve
Regular price $35.25 USDRegular priceSale price $35.25 USD -
Komatsu 113-15-22771 Piston
Regular price $167.99 USDRegular priceSale price $167.99 USD -
Komatsu 04248-30813 Rod
Regular price $7.99 USDRegular priceSale price $7.99 USD -
Komatsu 6204-27-8100 Set Main Metal 075
Regular price $77.99 USDRegular priceSale price $77.99 USD -
Komatsu 6204-21-8100 Set Main Metal Std
Regular price $70.99 USDRegular priceSale price $70.99 USD -
Komatsu 6207-21-2120 Liner
Regular price $141.99 USDRegular price$177.49 USDSale price $141.99 USDSale -
Komatsu 6207-11-1430 Valve Seat In (Std)
Regular price $17.99 USDRegular priceSale price $17.99 USD -
Komatsu 6204-38-2202 Piston Ring
Regular price $61.99 USDRegular priceSale price $61.99 USD -
Komatsu 600-813-3171 Starter
Regular price $970.99 USDRegular priceSale price $970.99 USD -
Komatsu 600-421-6120 Thermostat
Regular price $98.39 USDRegular price$122.99 USDSale price $98.39 USDSale -
Komatsu 09365-00826 Roller
Regular price $14.49 USDRegular priceSale price $14.49 USD -
Komatsu 04120-21746 V-Belt
Regular price $25.78 USDRegular priceSale price $25.78 USD -
Komatsu 04120-21742 V-Belt
Regular price $23.38 USDRegular priceSale price $23.38 USD -
Komatsu 08043-04000 Fuse Box
Regular price $25.99 USDRegular priceSale price $25.99 USD -
Komatsu 707-44-80070 Piston Ring
Regular price $53.19 USDRegular price$66.49 USDSale price $53.19 USDSale -
Komatsu 707-44-70070 Piston Ring
Regular price $61.99 USDRegular price$77.49 USDSale price $61.99 USDSale -
Komatsu 6204-26-8100 Set Main Metal 100
Regular price $85.49 USDRegular priceSale price $85.49 USD -
Komatsu 600-821-6120 Alternator
Regular price $884.39 USDRegular price$1,105.49 USDSale price $884.39 USDSale
Collection: Komatsu D21PG Parts
Komatsu D21PG Parts from WQC Parts is organized to help buyers find aftermarket Komatsu replacement parts by machine model, part number, and application. Use this collection to review related parts, then confirm final fitment by checking the Komatsu part number, machine model, serial range, and component arrangement before ordering.
Komatsu D21PG Parts Applications
Parts in this collection may support heavy equipment repair, maintenance, and uptime across construction, mining, quarry, road-building, utility, forestry, and fleet applications. Fitment can vary by serial range, installed arrangement, hydraulic configuration, engine arrangement, or attachment package.
How to Confirm Fitment
- Search by the original Komatsu part number when available.
- Compare dashed and non-dashed part-number formats.
- Confirm model, serial number, diagram position, and quantity.
- Contact WQC Parts with the part number, model, serial number, and photos when fitment is uncertain.
Why Choose WQC Parts?
WQC Parts focuses on WQ Certified aftermarket Komatsu parts, organized product data, and practical support for keeping heavy equipment working.