OEM vs Aftermarket Excavator Parts: Cost, Quality, and Everything in Between
We often see the figure of excavator in building construction, road construction, mining, water conservancy engineering, agricultural field, excavator is an indispensable role in accomplishing all kinds of arduous tasks, but long time digging, cleaning, handling, it also has downtime, parts wear and tear of the trouble. This is when we have to replace the parts to make the machine work smoothly for us again. That does bring the question, OEM vs Aftermarket Excavator Parts, which is the best choice? We’ll find out here!
What type of excavator parts should you buy?
There are different types of excavator parts, mainly OEM or aftermarket parts. Whether you want to buy used or new parts, you will have to pick one of these. Cost, Quality, Compatibility, Lead Time and Warranty are the main factors we consider. Cost, Quality, Compatibility, Lead Time and Warranty are all decisive factors in choosing the parts we buy.
OEM parts
OEM (Original Equipment Manufacturer) parts or OEM parts are made by the excavator’s original brand (e.g., Caterpillar, Komatsu, Hitachi) or their authorized suppliers. The difference here is they are sold under the manufacturer’s name, not under the original brand’s name. Usually, they have the same quality and fit, but they are less expensive when compared to a genuine part.
✔ Pros
- Guaranteed compatibility and performance.
- Backed by manufacturer warranty.
- Maintains resale value of the excavator.
✖ Cons
- Higher cost.
- Longer lead times (dependent on dealer stock).
Aftermarket Parts
Aftermarket parts are produced by third-party manufacturers unrelated to the original brand or manufacturer, Independent companies (e.g., Chinese, Turkish, or Indian manufacturers) and sold through online marketplaces, local suppliers, or specialized retailers.They are inexpensive and the cheapest way to get new parts for your excavator, but the quality varies greatly from brand to brand.
The aftermarket parts you choose should always be from an aftermarket parts supplier with a good reputation and good aftermarket service in the excavator industry.
✔ Pros
- Cost-effective solution.
- Wider variety (e.g., reinforced buckets, custom designs).
- Faster availability (global supply chains).
✖ Cons
- Quality varies from factory to factory.
- May require modifications for proper fit.
- No OEM warranty coverage.(Amoparts aftermarket parts offer 6-month warranty )
OEM vs. Aftermarket Excavator Parts Comparison
Below is a comparison table of OEM vs. aftermarket excavator parts covering cost, quality, compatibility, lead time and warranty factors for reference only:
| Factor | OEM Parts | Aftermarket Parts | Recommendation |
| Cost | – Higher price (40–80% more than aftermarket) – Lower long-term TCO (higher reliability) | – Lower initial cost – Wide price range (budget to premium brands like ITR, AmoParts) | – Budget-limited jobs → Aftermarket – Critical parts → OEM |
| Quality | – Consistent, manufacturer-approved – Longer lifespan under heavy use | – Varies (low-cost = risky, premium = near-OEM quality) – Check brand reputation (e.g.,FitsParts,TCP) | – Non-critical parts (Electrical Parts, Undercarriage ) → aftermarket – Hydraulics/engine → OEM |
| Compatibility | – Guaranteed fit (no modifications needed) – Ideal for electronics/sensors | – May require adjustments (low-quality brands) – Premium brands offer “OEM-equivalent” parts | – Older machines (OEM discontinued) → Aftermarket – Precision components → OEM |
| Lead Time | – Longer delays (depends on OEM stock) – Risk of supply chain disruptions | – Faster shipping (widely stocked) – Best for urgent repairs | – Emergency fixes → Aftermarket – Scheduled maintenance → OEM |
| Warranty | – 1–2 years OEM warranty – Required for new machine warranties | – Varies by supplier (some match OEM, cheap parts may have none) | – Warranty-sensitive buyers → OEM – Out-of-warranty machines → Certified aftermarket |
Additional recommendations
Mixed use strategy: OEM for critical components, high-end subcontractor for non-critical components (e.g., ITR track plates for CAT excavators).
Verify subcontractor brands: Check for third-party certifications (e.g., ISO 9001) or word-of-mouth.
Record replacement history: Track the life of subcontractor parts to optimize subsequent purchases.
Contact us for further information can be provided if recommendations are required for specific brands (e.g. Komatsu, Sany) or components (swing motors, pilot valves)!
Which is the better option?
It always depends on the actual situation and your current needs. Aftermarket parts are suitable for customers with low budgets and in urgent need of new parts, you could save up to 30-40% if you choose to go the use of aftermarket parts. OEM parts are expensive and not acceptable to every buyer, but they are very durable and withstand a lot more pressure. That matters because you can get a replacement part in case of manufacturing defects or any other situations.
If you need to buy excavator parts, you always want to buy aftermarket parts that are inexpensive and of high quality. If you need to buy excavator parts, you always want to buy high quality aftermarket parts at a good price, and Amoparts not only offers a warranty and no compatibility issues, their aftermarket parts are comparable to OEM quality and provide excellent performance in mission critical situations. You’re saving money, and you get an excellent ROI, which is extremely important to consider.
