3696558F Thermostat Fits Cummins Engine Cooling Temperature Control Replacement Part

Product Overview

3696558F Thermostat is a precision temperature regulating valve specially matched for Cummins series diesel engine cooling systems. Installed in the engine water channel, it relies on internal wax thermal expansion and contraction to automatically open and close, controlling the flow of cooling liquid to quickly warm up the cold engine and maintain constant optimal working temperature during operation.

This thermostat effectively solves common cooling system faults such as slow engine warm-up, insufficient heat supply, high water temperature overheating, power drop and cylinder liner wear caused by stuck, aging or inaccurate temperature sensing of old thermostats.

Core Product Advantages

1. High-Sensitivity Wax Core Thermal Sensing Structure

   Imported temperature sensing wax core with stable expansion coefficient, accurate opening temperature, rapid response to coolant temperature changes, effectively balance engine cold start and high temperature heat dissipation.

2. Corrosion Resistant Metal Valve Body

   Integrated stainless steel valve body, resistant to coolant corrosion, scale accumulation and long-term water flow impact, no jamming or valve failure.

3. Good Sealing Performance

   High temperature resistant rubber sealing ring tightly fits the water channel seat, effectively prevent coolant leakage and air lock in cooling circuit.

4. Wide Temperature Adaptability

   Stable working performance from -40℃ ~ +130℃, reliable temperature regulation in cold plateau winter and high-load summer working conditions.

5. Anti-Scale Surface Treatment

   Smooth inner and outer surface reduces coolant scale adhesion, keep unobstructed water circulation for long-term use.

6. Standard Matching Specification

   Dimension 4.5cm4.5cm8cm, weight 0.242KG, perfectly fit Cummins engine thermostat housing, plug-and-play replacement without modification.

7. Strict Factory Temperature Calibration Test

   Every thermostat undergoes opening temperature detection, cycle switch test and tightness inspection, stable batch quality for engine overhaul and fleet bulk procurement.

Basic Product Parameters

• Part Number: 3696558F

• English Name: THERMOSTAT

• Product Name: Engine Thermostat / Coolant Temperature Regulator Valve

• Applicable Engine: Cummins Series Diesel Engines

• Overall Dimension: 4.5cm 4.5cm 8cm

• Product Weight: 0.242KG

• Main Material: Stainless steel valve body + temperature sensing wax core + high temperature resistant sealing rubber

• Working Temperature: -40℃ ~ +130℃

• Core Function: Automatically adjust coolant circulation volume, control engine operating temperature, speed up cold start warm-up, prevent overheating

• Key Features: Precise temperature sensing, anti-jam, anti-corrosion, anti-leakage, fast response, easy installation

• Installation Position: Engine cooling water channel thermostat housing

• Package: Neutral export carton, independent shockproof packaging to avoid wax core damage and valve deformation

Application Scenarios

Suitable for heavy-duty trucks, construction machinery, mining equipment and diesel generator sets equipped with Cummins diesel engines. Adapt to low-temperature cold start, mountain full-load climbing and long-distance continuous transportation. Effectively stabilize engine water temperature, reduce fuel consumption and avoid overheating shutdown faults.

Purchase Reminder

Please confirm part number 3696558F and Cummins engine model before ordering to ensure accurate compatibility. We support global bulk wholesale for auto parts distributors, mechanical repair workshops and engineering fleets with sufficient stock and competitive prices. Cooling system flushing and thermostat installation guidance are provided after sales.

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