About WQC Parts

WQC Parts is an independent supplier of aftermarket replacement parts for heavy equipment, with a primary focus on Komatsu machines.

Our goal is simple: provide contractors, equipment owners, repair shops, and parts professionals with reliable replacement parts at a more competitive cost than traditional OEM channels, without sacrificing fit, function, or product quality.

More Than 30 Years of Heavy Equipment Experience

WQC Parts is backed by more than 30 years of experience in the heavy equipment industry, working with parts, service, equipment sales, and rebuilding across multiple major equipment brands.

That breadth of experience matters.

We have worked in the heavy equipment parts industry, but we have also been directly involved in the service side of the business. We understand what happens when a contractor's machine goes down: production stops, schedules are disrupted, labor is standing by, and every hour of downtime costs money. Finding the right part is not simply a purchasing decision—it is often the difference between getting a machine back to work and losing another day on the job.

Our experience also includes extensive work in used heavy equipment sales, equipment evaluation, international equipment markets, and machine rebuilding. Over the years, we have seen equipment from virtually every angle—from identifying the correct replacement component to understanding how machines wear, how they are repaired, how they are rebuilt, and what ultimately determines whether they remain productive.

It is the accumulation of that experience that makes WQC Parts a valuable partner for equipment owners, contractors, repair facilities, and fleet managers.

We understand both sides of the equation: the quality required to keep a machine working and the financial pressure to keep operating costs under control.

Our goal is to provide customers with quality aftermarket replacement parts that help keep their equipment productive while delivering substantial savings—typically averaging approximately 50% compared with OEM pricing.

For us, selling a part is only part of the job. Helping customers keep their machines running is what the business is really about.

A Practical Alternative to OEM Parts

WQC Parts provides aftermarket replacement parts for customers who want a dependable alternative to OEM pricing.

Many of our products are sourced from ISO-certified manufacturers in Europe and Japan and are selected to meet demanding dimensional, material, and performance requirements.

Our product range includes:

• Pins and bushings

• Bucket and linkage components

• Hydraulic components

• Pumps and motors

• Bearings

• Seals and gasket kits

• Electrical components

• Filters and service parts

• Transmission components

• Turbochargers

• Hoses

• Final drive components

• Rebuild kits

• Other replacement parts for construction equipment

Our specialty remains Komatsu replacement parts, particularly high-wear components where material quality, hardness, tolerances, and proper fit are critical.

WQ Certified Quality Standards

For selected product categories, WQC Parts uses defined technical standards under our WQ Certified program.

Our Komatsu-compatible pins and bushings, for example, are evaluated against material and manufacturing requirements designed specifically for demanding pivot, linkage, bucket, and work-equipment applications.

WQ Certified pin specifications include 42CrMo4 alloy steel with induction-hardened working surfaces, while our bushings are manufactured with precision-ground inside and outside diameters for proper fit and service life.

You can learn more about our standards in our Komatsu Pins & Bushings Technical Guide and WQ Certified product information.

Accurate Parts Information Matters

One of the biggest challenges in heavy equipment parts is identifying the correct component.

Machine model alone is not always enough. Serial-number ranges, machine configuration, attachment design, and superseded part numbers can all affect compatibility.

That is why WQC Parts continues to expand the application data, machine usage information, part-number references, and technical details available throughout our catalog.

Whenever possible, we recommend confirming the original equipment part number before ordering.

If you are unsure, our team can help review the information available for your machine.

Warranty and Customer Support

We stand behind the parts we sell.

WQC Parts offers warranty coverage comparable to the applicable OEM warranty for the replacement parts we supply, subject to our published warranty terms and conditions.

We also believe that good customer service means being straightforward. If a part is not appropriate for an application, we would rather help identify the correct solution than simply make a sale.

Independent Aftermarket Supplier

WQC Parts is an independent aftermarket parts supplier and is not an authorized Komatsu dealer.

Manufacturer names, machine models, and original part numbers are used for identification and compatibility purposes.

This independence allows us to focus on providing customers with additional sourcing options and competitive alternatives to traditional OEM parts channels.

Built Better. Lasts Longer.

Our philosophy is reflected in our slogan:

Built Better. Lasts Longer.

It represents the standard we want associated with every WQC Parts product: dependable materials, proper manufacturing, accurate fit, and value over the life of the machine.

Whether you maintain one excavator or manage an entire equipment fleet, our objective is the same—to help keep your machines working while giving you a better alternative for replacement parts.

For help identifying a part or confirming an application, contact WQC Parts and our team will be glad to assist.