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Browse aftermarket replacement parts for Komatsu excavators, dozers, wheel loaders, and dump trucks.
Use filters or search by OEM part number, with compatibility details listed on each product page.
Parts Online carries aftermarket replacement parts for Komatsu construction equipment, including excavators, dozers, wheel loaders, and dump trucks. Our catalog covers commonly replaced maintenance, wear, and service parts such as cab glass, mirrors, pins, air filters, and undercarriage parts. Each product page lists the OEM part number it replaces so you can verify fitment before ordering.
We stock parts for PC-series excavators ranging from compact models (PC100, PC120, PC130) to large excavators (PC300, PC400, PC600, PC750, PC800). We also carry parts for D-series dozers (D31, D37, D39, D41, D51, D55, D61, D65, D85, D155), WA-series wheel loaders (WA270, WA320), and HD-series dump trucks. If you are unsure which part fits your machine, contact our team with your model and serial number and we will help verify compatibility.
Aftermarket parts are manufactured by third-party suppliers to match the form, fit, and function of the original Komatsu part. They replace the same OEM part number and are designed to the same dimensions and material specifications. The main difference is price. Aftermarket parts typically cost significantly less than ordering the same part through a Komatsu dealer. For wear items like cab glass, mirrors, and air filters, aftermarket replacements perform identically to the OEM original.
Parts Online matches every product to its OEM part number so you can cross-reference what you need. If your Komatsu dealer quoted you a part number, you can search that number on our site to find the aftermarket equivalent. We do not sell parts for proprietary electronic control systems or software-dependent components. Our catalog focuses on mechanical, wear, and maintenance parts where aftermarket alternatives are well-established and reliable.
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