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Komatsu 6204-41-4210 Exhaust Valve
Regular price $17.94 USDRegular price$22.43 USDSale price $17.94 USDSale -
Komatsu 6204-41-4410 Valve Spring
Regular price $4.53 USDRegular priceSale price $4.53 USD -
Komatsu 6204-31-3400 Crank Pin Metal A
Regular price $73.14 USDRegular priceSale price $73.14 USD -
Komatsu 6204-29-8500 Thrust Metal Assembly
Regular price $34.04 USDRegular priceSale price $34.04 USD -
Komatsu 6204-37-3400 Crank Pin Metal A
Regular price $77.64 USDRegular priceSale price $77.64 USD -
Komatsu 6204-38-3400 Crank Pin Metal A
Regular price $77.64 USDRegular priceSale price $77.64 USD -
Komatsu 6204-21-6811 Gasket
Regular price $1.92 USDRegular priceSale price $1.92 USD -
Komatsu 6204-21-3510 Seal Front
Regular price $14.99 USDRegular price$18.74 USDSale price $14.99 USDSale -
Komatsu 6204-21-3410 Packing
Regular price $9.86 USDRegular priceSale price $9.86 USD -
Komatsu 6204-11-1830 Gasket
Regular price $32.05 USDRegular priceSale price $32.05 USD -
Komatsu 6204-19-1310 Valve Guide
Regular price $6.92 USDRegular priceSale price $6.92 USD -
Komatsu 6204-11-3880 Gasket
Regular price $4.34 USDRegular priceSale price $4.34 USD -
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Komatsu 6204-21-5280 Gasket
Regular price $5.28 USDRegular priceSale price $5.28 USD -
Komatsu 6202-K2-0900 Gasket Kit, Cylinder Block
Regular price $383.61 USDRegular priceSale price $383.61 USD -
Komatsu 6144-21-2500 Shim Assembly
Regular price $3.82 USDRegular priceSale price $3.82 USD -
Komatsu 6141-21-1332 Seal Rear
Regular price $17.03 USDRegular priceSale price $17.03 USD -
Komatsu 6140-11-6331 Gasket
Regular price $3.95 USDRegular priceSale price $3.95 USD -
Komatsu 283-06-16190 Fuse 10A
Regular price $1.48 USDRegular priceSale price $1.48 USD -
Komatsu 22W-06-13160 Fuse 20A
Regular price $1.63 USDRegular priceSale price $1.63 USD
Collection: Komatsu D21A Parts
Komatsu D21A 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 D21A 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.