The Perkins Thermostat 4133L509 is a critical component for maintaining optimal engine temperature in Perkins 1104D-44, 1104C-44, 1104D-44T, and 1104C-E44T engines. As an OE equivalent replacement, it duplicates the original design’s performance, ensuring precise coolant flow regulation to balance heat dissipation and engine efficiency.
Key Features
Precision Temperature Control: Opens at 82°C and fully expands at 95°C, ensuring the engine operates within the ideal thermal range for fuel efficiency and longevity.
Durable Construction: Brass housing and stainless steel spring resist corrosion and mechanical stress, suitable for harsh environments like agriculture and construction.
Leak-Proof Sealing: Molded rubber gasket provides airtight closure, preventing coolant leaks and system failures.
Wide Compatibility: Fits Perkins engines in generators (e.g., backup power systems), tractors (e.g., Massey Ferguson 430), and excavators.
Why Choose Ningbo Qiuning Trading Co., Ltd.?
As a trusted Perkins parts supplier, we offer:
Strict Quality Assurance: Each thermostat undergoes flow testing .
Global Logistics: Fast delivery via DHL/UPS/FedEx to over 50 countries, with bulk order discounts available.
Technical Support: Expert guidance on installation and troubleshooting (e.g., coolant temperature anomalies).
Cost-Effective Pricing: Competitive rates without compromising on performance.
Installation Guide
Preparation: Turn off the engine and allow it to cool. Drain coolant below the thermostat housing level.
Removal: Disconnect hoses and remove the old thermostat using a socket wrench. Clean the mating surfaces.
Installation: Apply a thin layer of coolant to the new thermostat’s gasket. Align mounting holes and hand-tighten bolts before torqueing to 10-15 N·m.
Refill: Reinstall hoses, refill coolant, and bleed air from the system.
Verification: Start the engine and check for leaks. Monitor temperature gauge to ensure proper operation.
Application Scenarios
Power Generation: Ensures stable coolant temperature in backup generators for hospitals and data centers.
Agriculture: Protects tractors and combine harvesters from overheating during prolonged field operations.
Construction: Maintains excavators and loaders’ performance in high-dust or extreme-temperature environments.
Quality Assurance
Our thermostats are manufactured in ISO 9001-certified facilities, adhering to Perkins’ original design blueprints. Each unit is inspected for fit, flow, and temperature response. For bulk orders, we offer customized packaging and private labeling.
Ordering Information
To purchase the Perkins Thermostat 4133L509, contact Ningbo Qiuning Trading Co., Ltd.:
Email: allen@perkins-rx.com
Website: http://www.cnqn.net/
WhatsApp/WeChat: +8615888032469
