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Durable Aftermarket CAT Locks
A CAT lock is a small but essential safety component that protects your Caterpillar machine from unauthorized access, accidental opening, or fuel theft. Whether it’s a cab door lock, anti‑lock, fuel cap lock, or padlock, choosing the right part keeps your machine secure and your operations running smoothly.
At FridayParts, we provide perfect‑fit CAT locks engineered to meet OEM standards—ensuring strength, precision fitment, and easy installation across CAT excavators, loaders, and other heavy‑duty machines.
Types of CAT Locks
We offer a complete selection of locks for different parts of your Caterpillar machine:
- CAT Safety Lock Lever: Installed in the cab to lock the hydraulic controls, preventing accidental movement of the boom, stick, or other implements. This is a critical safety feature. (Commonly found on excavators like the CAT E70 / E120B / E200B series)
- Cab Door Lock: Keeps the operator’s cabin secure against unauthorized entry or vibration‑induced openings. Available for CAT E‑Series and 300‑Series models such as E70B, E200B, 320C, 320D, 324C, 324D.
- Locking Fuel Cap: Protects fuel tanks from contamination or theft. Includes secure key-type caps such as 086-1781, 142-8828, 201-0330, and 164-4858 for various CAT machines.
- Padlock & Filler Cap Set: Used for multi‑point or auxiliary protection—ideal for maintenance fleets.
Each model uses corrosion‑resistant coatings and precision threads or latches to ensure smooth locking even after repeated use.
CAT Lock Applications by Machine Type
| Lock Type | Commonly Used On Machine Models | Example Part Numbers |
| Safety Lock Lever | Excavators: E70B, E120B, E200B, 307, 312, 320 series | 5MSA002 / 5MSA002-1 / 5MSA002-2 |
| Cab Door Locks | Excavators: E70B, E200B, 320C, 320D, 324D, 325C series | 5MS002 / 5MS003-1 / 156-6600 |
| Fuel Cap Locks | Various Loaders, Excavators, Backhoes: 305D, 420E, 966H, 972H | 201-0330 / 142-8828 / 349-7059 / 164-4858 |
| Padlocks & Sets | Skid Steer Loaders: 216B, 226B, 246C, 256C, and more | 246-2641 Padlock Set |
Every part is tested for compatibility, locking force, and sealing performance.
Shop with Confidence
At FridayParts, we ensure every Aftermarket CAT lock meets strict quality and performance standards:
- Durable stainless or zinc‑alloy construction
- Smooth key operation under dust and moisture
- Direct‑fit replacement for OEM Caterpillar components
- Fast global delivery and professional customer support
Supported Models include: CAT E70B, E200B, 307C, 311C, 312D, 315C, 318C – F Series, 320B – D2, 324D, 325C, 326D2, 330D, 340, 966H, 972H, and more.