Heavy-Duty Electrical Relays & Engine Control Solenoids

If your machinery is experiencing sudden power loss or failing to trigger high-load components, a worn-out replacement electrical relay is often the root cause. As a critical circuit protection device, a precision-engineered relay acts as an electrically operated switch, allowing a low-power signal to control a high-power circuit safely. BeeSpareParts stocks a massive inventory of 12V and 24V relays designed to handle the intense electrical demands of heavy-duty diesel engines.

Electrical issues in a system are often connected. If your engine isn't cranking despite a new relay, we recommend inspecting your for mechanical failure, or browsing our to ensure your system is receiving steady voltage. Our relay assemblies are built with high-conductivity copper contacts and moisture-resistant housings, making them a cost-effective alternative to expensive dealer-branded components.

Whether you need a starter relay for an excavator, a timer relay for a pre-heater, or a general-purpose power relay, our parts are factory-tested for thousands of cycles and are ready for fast international shipping. Keep your electrical system responsive—upgrade to a heavy-duty relay solution today.

Fits for:

• Engine & Model Series: 4BT, 6BT, 4D95, 6D102, 6D107, S6K, S4K, J05E, J08E, 4HK1, 6HK1.

• Equipment Models: ZX, PC, SK, EC, EX series excavators, backhoes, loaders, and backup power units.