When a Cat® machine goes down or reaches a maintenance interval, finding the right part quickly matters. The best Cat parts protect your equipment investment and keep your operation moving without costly delays.
Since 1944, Thompson Machinery has served as the exclusive Cat dealer for Middle Tennessee, West Tennessee and North Mississippi. We support businesses across construction, mining, forestry and industrial operations in sourcing the right parts. We’ll show you how to find the right Cat parts quickly and choose the best sourcing approach for your machines and budget.
Start With the Right Identification Method
The fastest way to find quality Cat machine parts is to know how to look them up. Parts.Cat.com offers multiple search options to help you pinpoint exactly what you need.
Search by Serial Number
The serial number, also called the Product Identification Number (PIN), is the most precise way to find compatible parts. On Parts.Cat.com, the serial number filter returns verified-to-fit parts, indicated by a green checkmark.
You’ll typically find the PIN on the identification plate on your machine’s outer frame, though the location varies by machine type, and plates can wear over time. Keep in mind that machines have multiple identification numbers for the main machine, engine and larger systems — the primary PIN is what drives the parts lookup. Parts.Cat.com includes a serial number identification resource to help users locate their PIN if needed.
Once your serial number is registered, you can also scan the QR code in the machine cab via the Cat Central app to instantly reach your parts list. This eliminates manual entry and speeds up the ordering process when you’re on the jobsite.
Search by Model or Part Number
If the serial number isn’t accessible, model or part number searches are also available on Parts.Cat.com. This is particularly useful when you have an old part in hand that you need to match.
Parts.Cat.com also offers visual parts diagrams, allowing you to browse exploded component views of your machine through the Service Information System (SIS) and cross-reference parts visually. This helps when you’re identifying a part by what it looks like rather than a number alone.
Understand Your Cat® Parts Options
Once you’ve identified the right part, the next decision is which type fits your machine, situation and budget. The right choice depends on four factors — length of ownership, machine utilization, affordability and repair speed. Thompson Machinery’s Cat parts inventory includes multiple options to get your machine back in action.
New Cat Parts
Genuine new Cat parts help deliver full service life, optimal performance and maintain warranty coverage for your equipment. These components reflect the latest Caterpillar engineering improvements across undercarriage systems, belts, cab assemblies, drive trains, engine overhaul kits, electronic parts, filters, batteries and hydraulic systems.
New parts are best suited for critical systems, newer machines or situations where warranty protection and full performance matter most.
Piezas Cat usadas
Repair costs drop by as much as 50% with used Cat parts, making them a smart choice for older machines or lower-utilization equipment. These components still deliver reliable quality while protecting your budget. Thompson Machinery sources from a nationwide Cat dealer network, which broadens availability for hard-to-find components when you need them.
Piezas reacondicionadas
Get quality components without the premium price tag. Reconditioned Cat parts are carefully restored to reliable working condition and protect your repair budget. These components are ideal for machines with low use or long ownership, where new parts don’t justify their cost.
Unused Parts
Unused Cat parts offer another cost-effective alternative to new part pricing. These are genuine Cat components that were never installed and sourced from equipment that was updated, respecified or taken out of service before the part was used. They deliver the same fit and function as new parts while typically carrying a lower price point. Consider unused parts for budget-conscious repairs where new part pricing isn’t justified.
Componentes de intercambio
When downtime threatens your operation, exchange components provide the fastest path back to productivity. These verified, ready-to-install Cat parts come tested and inspected to meet Caterpillar Contaminant Control Measures. Thompson Machinery stocks a wide range, including:
- Cylinder groups
- Hydraulic pumps and motors
- Engines and long blocks
- Transmisiones
- Torque converters
- Differential groups
- Undercarriage group assemblies
Cat Planned Maintenance Kits
Cat Planned Maintenance Kits bundle everything you need for scheduled maintenance into one order. They eliminate guesswork and save time. Preassembled for specific machines and maintenance intervals, these kits are a natural fit for fleet managers who need to keep multiple machines on a predictable maintenance schedule.
OEM vs. Aftermarket Parts
The key to locating reliable Cat parts is understanding the distinction between genuine Cat original equipment manufacturer (OEM) parts and aftermarket alternatives. OEM components are engineered to exact Cat tolerances for guaranteed compatibility, consistent performance and warranty protection.
Aftermarket parts may appear to lower up-front repair costs, but they can introduce fit, quality and performance risks. Non-OEM components are not built to the same Cat specifications, and using them on certain systems can affect warranty coverage.
For high-stakes components like hydraulic systems, engine assemblies and transmissions, OEM is always the best option. These critical systems affect machine performance and longevity. Genuine Cat parts help maintain resale value and mechanical integrity. However, even for higher-wear, lower-stakes items such as filters, ground-engaging tools and cutting edges, where budget may be more of a concern, consider used, reconditioned, unused or exchange parts. These options help control repair costs while keeping your equipment supported with genuine Cat components.
Where to Source Cat Machine Parts You Can Count On
Knowing which part you need is only half the equation when sourcing Cat machine parts. A reliable authorized dealer matters just as much. Thompson Machinery serves as your trusted connection.
How to Find Cat Parts Online
Thompson Machinery connects clients to Parts.Cat.com, providing more than 1.4 million genuine Cat components. The system is available 24/7/365 from any device. Clients can search by serial number, model or part number, view real-time pricing and availability, and order Cat parts online directly to a jobsite or pickup location.
Every new, used and remanufactured parts purchase includes a 12-month warranty for added peace of mind. The Cat Central app, available on iPhone and Android, lets users reach maintenance information and support from one place, including the QR code scanner for instant serial number lookup. Thompson Machinery makes this equipment management technology available to clients as part of their support offering.
Visit a Thompson Machinery Location
Thompson Machinery’s parts specialists can help you source the right component and get it in hand quickly. The company offers 24/7 parts and service support, with convenient parts drop box locations for flexible pickup across Middle Tennessee, West Tennessee and North Mississippi. Thompson Machinery’s nationwide Cat dealer network provides additional sourcing capability when you need specialized components.
Find the Cat Parts You Need Through Thompson Machinery
Whether you need a critical repair component or routine maintenance supplies, Thompson Machinery connects you to genuine Cat parts through Parts.Cat.com and local service locations. Shop Cat parts online anytime, visit one of our convenient locations with drop box service or contact Thompson Machinery today.