WESPC 145206320 Thermostat for Perkins 403C 11 403D 11 102 103 Series Engines

WESPC 145206320 Thermostat for Perkins 403C 11 403D 11 102 103 Series Engines

Application:

WESPC 145206320 thermostat is designed for Perkins 100 and 400 series 2-, 3-, and 4-cylinder diesel engines, including models 102-05, 103-10, 403C-11, 403D-11, and 404D-22. These engines are widely used in compact construction machinery, agricultural equipment, generator sets, and industrial systems requiring precise thermal regulation. The thermostat controls coolant flow based on engine temperature, helping the engine reach optimal operating conditions quickly and maintaining thermal stability during variable load cycles. It replaces previous part number 145206062 and is engineered to ensure consistent coolant circulation, protect against overheating, and support long-term engine reliability.

Generator sets:

Commonly installed in 10–40 kVA diesel generator platforms powered by Perkins 100 and 400 series engines. The WESPC 145206320 thermostat maintains stable coolant flow during continuous operation, contributing to fuel efficiency and reduced wear. It supports reliable performance in mobile lighting towers, telecom backup systems, and portable gensets operating under frequent start-stop conditions and fluctuating ambient temperatures.

Construction machinery:

Suitable for compact excavators, skid steer loaders, and site dumpers powered by Perkins 403C and 403D engines. The thermostat ensures optimal engine temperature in high-vibration environments, supporting torque output and mechanical integrity. Verified applications include Volvo EC35, EC50, and New Holland L175, L218, and L220, where thermal control is essential to uptime and engine longevity.

Agricultural equipment:

Applied in small tractors and utility vehicles requiring compact diesel power units. The WESPC 145206320 thermostat supports rapid warm-up and consistent temperature regulation during extended field operations, reducing fuel consumption and minimizing engine stress. It contributes to stable performance in Case IH Farmall 31–50 series and Massey Ferguson compact tractors equipped with Perkins 100 and 400 series engines.

Industrial systems:

Installed in stationary pumps, hydraulic power units, and mechanical drives using Perkins 100 and 400 series engines. The thermostat supports continuous operation by regulating coolant flow and maintaining lubrication integrity. Its precise thermal response helps prevent thermal cycling and component fatigue in demanding industrial environments with variable load demands.

Technical specifications:
Part number: 145206320
Replaces: 145206062
Compatible engines: Perkins 102-05, 103-10, 403C-11, 403D-11, 404D-22
Opening temperature: 82°C (180°F)
Material: corrosion-resistant brass and stainless steel
Dimensions: approx. 57 mm diameter × 40 mm height
Weight: approx. 0.4 kg
Packaging: individual box, 60 pcs/carton
Warranty: 12 months manufacturer warranty

Material & performance features:

Manufactured using high-grade brass and stainless steel for corrosion resistance and thermal stability. The wax element is engineered for precise temperature response, ensuring reliable coolant flow control under varying operating conditions. The sealing surface and spring mechanism are designed to withstand thermal expansion and mechanical stress, supporting long-term durability. Produced under ISO-certified quality control standards to ensure consistent performance across all applications.

Interchange part number:

145206320; verified fitment for Perkins 100 and 400 series engines. Compatible with standard maintenance and rebuild procedures across generator, construction, agricultural, and industrial applications.