Thermostats for Cummins Engines
The thermostat acts as an intelligent temperature control valve in the engine cooling system, directly impacting equipment power output and service life. We supply OEM-grade thermostat solutions exclusively for classic Cummins models including NT855, K19, K38 and K50. Equipped with high-precision wax thermal sensing elements and corrosion-resistant alloy housings, our thermostats operate stably under extreme working conditions ranging from -40℃ to 120℃, supporting efficient operation of machinery in mining, marine, generator set and other industries.
Thermostats for Cummins Engines
Product Overview
The thermostat acts as an intelligent temperature control valve in the engine cooling system, directly impacting equipment power output and service life. We supply OEM-grade thermostat solutions exclusively for classic Cummins models including NT855, K19, K38 and K50. Equipped with high-precision wax thermal sensing elements and corrosion-resistant alloy housings, our thermostats operate stably under extreme working conditions ranging from -40℃ to 120℃, supporting efficient operation of machinery in mining, marine, generator set and other industries.
Core Advantages
Detailed Adaptation by Model
Thermostats for NT855 Series
- Applicable Models: NT855, NTA855, NT855-GA (generator sets & construction machinery)
- Main Part Numbers: 3076489 (76℃ opening temp), 3629205 (82℃ high-temperature version)
- Technical Highlights: Optimized flow channel design for the high-torque characteristics of NT855 engines, boosting coolant flow rate by 15% to effectively resolve heat dissipation bottlenecks under heavy-duty working conditions.
Thermostats for K19 / K38 / K50 Series
- Applicable Models: K19 (generator sets), K38 (marine main engines), K50 (mining machinery)
- Main Part Numbers: 3629205 (high-temperature type), 3349225 (low-temperature type)
- Supporting Components: Thermostat housings (3010916) and sealing gaskets (3627961) are available simultaneously, offering one-stop solutions including thermostat core, housing and seals.
Technical Parameters & Certifications
| Model | Opening Temperature | Full Opening Temperature | Working Pressure | Material |
| NT855 Standard Type | 76℃ ±2℃ | 90℃ | 0.35 MPa | Brass + Stainless Steel |
| K Series High-Temp Type | 82℃ ±2℃ | 98℃ | 0.4 MPa | Aluminum Alloy with Ceramic Coating |
| K Series Low-Temp Type | 71℃ ±2℃ | 85℃ | 0.35 MPa | Brass with Anti-Corrosion Plating |
Quality Certification
Compliant with ISO9001 and TS16949 quality management systems.
Material certificates and pressure test reports are provided for every batch of products.
Application Cases & Customer Testimonials
- Mining Industry: After installing our thermostat Part No.3629205 on K50 haul trucks at a western copper mine, the engine water temperature fluctuation range was reduced from 15℃ to 5℃, cutting breakdown downtime by 70%.
- Marine Industry: Our thermostat 3076489 is fitted on K38 main engines of fishing fleets in the East China Sea, with zero offshore malfunctions caused by temperature control failure over 3 consecutive years.
Service Commitments
- Fast In-Stock Shipment: Dual warehouses in Chongqing stock regular models, orders shipped out within 24 hours.
- Technical Support: Free thermostat troubleshooting manuals available, precise matching supported by Engine Serial Number (ESN).
- Warranty Policy: Extended 12-month warranty, free replacement for non-artificial quality defects.
- Contact Us for Customized Solutions Simply provide your engine model or ESN, our technical engineers will match the optimal thermostat configuration for you within 1 hour!