CAT 320D Track Chain OEM vs Aftermarket: Which Is Better?

CAT 320D excavator track chain and undercarriage components working on harsh construction terrain

If you own or manage a CAT 320D excavator, you already know this machine is a workhorse on construction sites all over the world. From road building and foundation digging to general site clearing, it handles nearly every light and medium duty job with ease. When it comes to long-term operation, nothing burns through your budget faster than frequent repairs on the undercarriage. As one of the most worn-out crawler excavator track parts, the track chain takes constant impact, friction and mud buildup every single day. That’s why picking the right replacement chain matters so much.

Sooner or later, every equipment operator will face the same question: should I go with genuine OEM undercarriage parts for excavator, or turn to reliable aftermarket excavator undercarriage parts? It’s not always an easy call. Both options have their pros and cons when it comes to durability, price, fit and real-world performance. In this article, we break down all the key points to help you make a smart decision for your CAT 320D.

What Makes an OEM CAT 320D Track Chain Stand Out?

OEM track chains are produced or fully authorized by Caterpillar, built exactly to the original factory blueprints. Every size, pin spacing, bushing design and seal system matches your CAT 320D perfectly, so you will never run into fit issues during installation. These parts use top-grade custom alloy steel and go through multiple rounds of heat treatment, forging and strict quality testing before leaving the factory.

For anyone running machines in tough conditions like rocky ground, wet mud or long-hour continuous work, OEM undercarriage parts for excavator deliver unbeatable stability. The advanced floating seals do a great job keeping dirt and water out, which effectively stops grease leaks and early chain wear. If you plan to keep your CAT 320D for years and prioritize minimal downtime, OEM track chains are a solid long-term investment.

What to Know About Aftermarket CAT 320D Track Chain

Today’s aftermarket excavator undercarriage parts have come a long way from the low-quality products of the past. Many professional third-party manufacturers now follow industry-standard material rules and modern machining techniques to create durable track chains for most popular excavator models, including the CAT 320D.

Most reputable aftermarket track chains use common high-strength steel like 40Mn2 and 50Mn, paired with surface hardening to stand up to daily construction wear. While they don’t hit the ultra-precise standards of original OEM parts, they fit well for regular job sites and fully meet standard working hour requirements. The biggest advantages here are lower costs, large in-stock quantities and fast shipping, which is ideal for rental fleets, small contractors and anyone working with a tight budget.

Core Differences Between OEM and Aftermarket Track Chain

How to Pick the Right Option for Your CAT 320D

Let’s keep it simple. If your CAT 320D runs nonstop on harsh job sites, or you rely on this machine as your main workhorse for permanent projects, stick with OEM products. The extra cost upfront will save you from repeated replacements and unexpected work stops down the line.

On the other hand, if you run a rental fleet, handle short-term projects or mostly work on flat, gentle terrain, high-quality aftermarket options will serve you very well. Many experienced contractors choose trusted aftermarket suppliers because they get great performance without overspending. When you are searching for durable replacement parts, CAT 320D Track Chain offers a balanced mix of solid quality and reasonable cost for everyday construction use.

Final Thoughts

To put it plainly, there is no one-size-fits-all answer when choosing between these two types of crawler excavator track parts. OEM track chains focus on maximum durability and reliability for extreme working conditions. Meanwhile, well-made aftermarket track chains shine for their affordability and flexible supply.

For the majority of small and mid-sized construction teams around the world, premium aftermarket excavator undercarriage parts have become the go-to choice. They strike the perfect balance between performance and budget, and that’s exactly what most equipment owners are looking for.