Product Features

• Structure: Cast from high-strength ductile iron, with precision-machined mounting surfaces and integrated coolant passages. It features sealed bolt holes and a recessed cavity for the thermostat, ensuring a leak-free connection between the cylinder head and radiator hoses.

• Performance: Withstands high coolant pressure and temperature fluctuations, maintaining a stable flow path for engine coolant. The ductile iron construction provides excellent durability and resistance to thermal fatigue and corrosion.

• Design: Directly interchangeable with the original equipment housing, ensuring a perfect fit and seamless integration with the thermostat and cooling system hoses.

Core Function

1. Thermostat Mounting: Provides a rigid, sealed mounting base for the thermostat, ensuring precise control over coolant flow.

2. Coolant Flow Control: Connects the cylinder head to the radiator hoses, directing coolant through the engine or radiator based on the thermostat’s position to maintain optimal operating temperature.

3. Sealing & Protection: Maintains the integrity of the cooling system

Thermostat Base D22-101-32A+B SHANGCHAI – OEM-Grade Engine Cooling Component

When your SHANGCHAI engine demands precise thermal regulation, the Thermostat Base D22-101-32A+B stands as the critical junction between reliable performance and costly downtime. Engineered to OEM specifications, this thermostat base housing ensures coolant flows exactly where it needs to go, exactly when it needs to get there. METTLEAD Truck Parts delivers this essential SHANGCHAI engine component directly from our quality-controlled supply chain in China — giving procurement managers factory-direct pricing without compromising on fitment accuracy or material integrity.

Key Functions and Benefits of the Thermostat Base D22-101-32A+B

Precision Thermal Management

The thermostat base serves as the mounting platform and coolant passage hub for the thermostat assembly in SHANGCHAI diesel engines. It directs coolant circulation between the engine block, radiator, and bypass circuits, ensuring the engine reaches optimal operating temperature quickly and maintains it under varying load conditions.

Why This Part Matters to Your Fleet

• Prevents Overheating Failures: A cracked or corroded thermostat base disrupts coolant flow paths, leading to localized hot spots that warp cylinder heads and damage gaskets.
• Maintains Fuel Efficiency: Proper thermal regulation keeps combustion temperatures in the optimal range, preventing the 3–5% fuel penalty associated with engines running too cold or too hot.
• Reduces Unplanned Downtime: Replacing a worn thermostat base during scheduled maintenance costs a fraction of the roadside repair bill when it fails unexpectedly.
• OEM-Matched Sealing Surfaces: Precision-machined gasket faces eliminate coolant weepage that degrades over time with aftermarket alternatives.

Built for Demanding Conditions

This thermostat base is cast from high-grade aluminum alloy that resists the thermal cycling, vibration, and coolant chemistry exposure typical of heavy-duty commercial diesel applications. Every unit undergoes dimensional inspection to ensure bolt patterns, port alignments, and sealing surfaces match SHANGCHAI factory tolerances.

Technical Specifications – Thermostat Base D22-101-32A+B SHANGCHAI

Application Scenarios – Where This Thermostat Base Works

The Thermostat Base D22-101-32A+B is designed for SHANGCHAI-powered vehicles and equipment commonly found across construction, logistics, and municipal fleets:

• XCMG, SDLG, LIUGONG Wheel Loaders equipped with SHANGCHAI SC series engines
• SANY, ZOOMLION Concrete Mixers and Pump Trucks running D6114 powerplants
• SHAANXI / SHACMAN Heavy-Duty Trucks with SHANGCHAI diesel configurations
• FOTON AUMAN Medium and Heavy Trucks utilizing SHANGCHAI engine options
• Marine and Generator Set Applications powered by C6121 and SC series engines

Whether your fleet operates in the heat of African mining corridors or the cold-start conditions of Central Asian logistics routes, this thermostat base ensures your SHANGCHAI engines regulate temperature correctly from the first crank to full-load operation. Explore our full range of SHANGCHAI engine parts for complete cooling system solutions.

OEM/ODM Capability

White-Label and Custom Packaging

METTLEAD supports distributors and fleet operators who need branded packaging solutions. Whether you require neutral boxes for your own brand identity or specific labeling for regional compliance, we accommodate custom packaging on the Thermostat Base D22-101-32A+B without inflating lead times.

Quality Control You Can Verify

• Incoming Material Inspection: Raw castings checked for porosity, composition, and hardness before machining.
• CNC Machining Tolerance Audit: Critical dimensions verified against OEM drawings at multiple production stages.
• Pressure and Leak Testing: Coolant passage integrity confirmed before packaging.
• Traceability: Batch records maintained for every shipment — available upon request.

Factory-Direct Advantage

By sourcing the Thermostat Base D22-101-32A+B through METTLEAD, you eliminate intermediary markups while gaining access to a supplier who stocks deep across the SHANGCHAI parts catalog. We welcome procurement teams to visit our facilities for on-site quality audits and supply chain verification.

Frequently Asked Questions – Thermostat Base D22-101-32A+B SHANGCHAI

What is the function of the thermostat base in a SHANGCHAI engine?

The thermostat base D22-101-32A+B acts as the mounting seat and coolant distribution hub for the thermostat element. It connects the engine block’s coolant outlet to the radiator feed and bypass return, allowing the thermostat to regulate flow direction based on engine temperature. Without a properly sealed thermostat base, coolant can leak externally or bypass the radiator entirely, causing overheating.

How do I know if my thermostat base needs replacement?

Common signs include visible coolant seepage around the thermostat housing area, white mineral deposits on the base surface, engine temperature fluctuations despite a functional thermostat element, or physical cracks in the casting. If the gasket surface shows pitting or erosion during routine thermostat replacement, the base itself should be renewed.

Is this thermostat base compatible with both D22-101-32A and D22-101-32B configurations?

Yes. The part number D22-101-32A+B indicates this is the combined assembly that includes both the upper and lower base components as a matched set, ensuring proper alignment and sealing between mating surfaces.

What is the typical lifespan of this thermostat base under normal operating conditions?

Under standard maintenance intervals and proper coolant chemistry (correct antifreeze concentration and pH levels), the thermostat base typically serves 8,000–15,000 operating hours. However, environments with high mineral content in water supplies or fleets that neglect coolant replacement schedules may see accelerated corrosion.

Can I order just the thermostat base without the thermostat element?

Absolutely. The D22-101-32A+B is the base housing only. Thermostat elements, gaskets, and related seals can be ordered separately or bundled depending on your maintenance requirements. We recommend replacing the gasket each time the base is removed or installed.

Ready to Secure Your SHANGCHAI Thermostat Base Supply?

Procurement decisions in heavy-duty parts come down to three things: correct fitment, competitive pricing, and reliable delivery. METTLEAD delivers all three on the Thermostat Base D22-101-32A+B SHANGCHAI — backed by strict quality control and flexible order quantities that work for both single-unit urgent needs and container-volume stocking orders.

Get your quote today. Send us your required quantity, destination port, and any packaging preferences. Our team typically responds within 12 hours with pricing, lead time, and shipping options tailored to your logistics requirements.

Contact METTLEAD for a fast quote on the Thermostat Base D22-101-32A+B