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Specializing in Liners for: Caterpillar 3116 Cylinder Liner | Komatsu 6D105 Cylinder Liner | Isuzu 4BG1 Cylinder Liner | Cummins B5.9-C Cylinder Liner
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VISIT OUR FACEBOOK PAGE ►As a leading heavy equipment engine parts supplier, Honour Time Machinery Limited is proud to offer the essential Thermostat for your Yanmar 4TNV88 diesel engine. This critical component, with OEM part numbers 129907-44800 and 12990744800, is key to maintaining the correct engine operating temperature, preventing catastrophic failures caused by overheating. Our focus is on providing a Chinese high-quality alternative that meets or exceeds original equipment specifications for dependability. We ensure that our engine cooling solution resolves common issues like unstable temperature regulation and premature engine wear, ensuring your construction machinery operates efficiently.
Engine Temperature Regulation: Use for Yanmar 4TNV88 engine to ensure optimal running temperature.
Precision Fitment: Directly replaces OEM part 129907-44800, guaranteeing compatibility and a perfect seal.
Corrosion Resistance: Constructed with durable materials to resist damage from cooling fluid and prevent pre-mature failure.
Use for Excavator or Construction Machinery: Designed for heavy-duty operational environments, including Yanmar VIO50 mini excavators.
Prevents Overheating: Ensures timely coolant flow to prevent engine damage and maintain optimal performance.
Honour Time Machinery Limited is your trusted global sourcing engine components partner. We specialize in providing complete engine assembly and spare parts for a wide array of heavy-duty machinery. Our core expertise covers engines from leading brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Whether you need a full overhaul kit or specific components like a Crankshaft, Turbocharger, Cylinder Liner, or Injector, we stock the reliable construction equipment components you require.
Our inventory includes high-demand items such as Piston and Piston Ring sets, Crank Bearing and Con Rod Bearing, Thrust Plate, Diesel Pump, Water Pump, and Oil Pump. We are dedicated to delivering affordable diesel engine repair kits and high performance excavator thermostat units. Trust us for your genuine OEM alternative excavator parts and diesel engine spare parts wholesale needs. We guarantee quality across our entire range, from Cylinder Block and Cylinder Head to the smallest Connecting Rod component, ensuring you get the best excavator maintenance parts online.
| Engine Parts | Engine Parts | Engine Parts | Engine Parts |
|---|---|---|---|
| Liner Kit | Piston | Piston Ring | Gasket Kit |
| Gasket Head | Crankshaft | Valve Guide | Nozzle |
| Bearing | Pressure Switch | Flameout Solenoid | Monitor |
| Radiator | Main Valve | Belt | Engine Bearing |
| Cylinder Block | Valve Seat | Accelerator Motor | Transmitter |
| Fan Cooling | Other Engine Components |
| Brand | Model Examples | Brand | Model Examples |
|---|---|---|---|
| Komatsu | 3D82, 3D84, 4D84, 4D95, 6D95, 4D105, 6D102, 6D105, 6D108, 6D110, 6D114, 6D170 | KOBELCO | J05E, 6D34T, 6D16, J08E, 6D22T, 6D24T, 6D16T, 6D34 |
| CATERPILLAR | 3114, 3116, 3064T, S6K, C4, C6, C7, C-9, C13 | Mitsubishi | 4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40 |
| ISUZU | 3LD1, 4LE1, 4LE2, 4JB1, 4BG1, 4HK1, 6BG1, 6HK1, 6SD1, 6WG1, 6WF1 | Yanmar | 4D88E, 4TNE84, 4TNE88, 4TNE94, 4TNV88, 4TNV94L, 4TNV98, 4TNV106 |
| HINO | J05E, J08E, H06CT, H07D, V25C, EF750, P11C, V21C | CUMMINS | QSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C |
| VOLVO | D6D, D6E, D7D, D7E, D9E, D12D, D12E, D16D |
| Attribute | Detail | Attribute | Detail |
|---|---|---|---|
| Model NO. | 4TNV88 | Application | Excavator / Construction Equipment |
| Product Name | Thermostat | Part Number | 129907-44800, 12990744800 |
| Certification | ISO9001 | Condition | New |
| Model No. | Yanmar 4TNV88 | Specification | Standard Opening Temperature, Precision-Calibrated |
| Trademark | Honour Time Machinery Limited | Origin | China |
| Transport Package | Carton | Production Capacity | 5000PCS/Year |
| Payment Terms | T/T, Western Union, MoneyGram | Delivery Methods | Express: DHL Fedex EMS UPS or by Air/Sea |
Crankshaft: Installed in the Cummins QSB6.7 Engine Block. Connects pistons to the flywheel, converting linear motion to rotational motion.
Water Pump: Found on the Komatsu PC200-8 6D107 Engine Front. Circulates coolant through the engine and radiator to regulate temperature.
Turbocharger: Mounted on the exhaust manifold of the Caterpillar 320D C6.4 Engine. Increases engine power by compressing incoming air.
Injector: Positioned in the cylinder head of the Isuzu ZX200-3 4HK1 Engine. Sprays atomized fuel into the combustion chamber.
Gasket Head: Placed between the cylinder head and engine block of the Kubota KX080 4TNV98 Engine. Provides a crucial seal to prevent leaks.
Oil Pump: Located inside the oil pan of the Yanmar VIO50 4TNV88 Engine. Circulates lubricating oil to all moving engine parts.
Flameout Solenoid: Attached to the diesel pump or injection system of the Weichai WP10 Engine. Controls the fuel cutoff to shut down the engine.
Piston Ring: Fitted into grooves on the piston of the Cummins B3.9-C Engine. Seals the gap between the piston and the cylinder wall.
Thrust Plate: Installed next to the main bearings in the Komatsu PC300-7 6D114 Engine. Limits the axial (end-to-end) movement of the crankshaft.
Valve Seat: Pressed into the cylinder head of the Caterpillar 330D C9 Engine. Provides a sealing surface for the engine valves when closed.
A common failure in heavy machinery, such as the Komatsu PC300-8 6D114 Excavator, is engine overheating. This is often linked to the thermostat, coolant loss, or a damaged radiator hose.
Troubleshooting Step:
If your temperature gauge spikes, immediately shut down the engine. Do not open the radiator cap until the engine is cool. Check for obvious coolant leaks in hoses and the radiator core. If hoses are intact, the issue may be a stuck thermostat or internal coolant blockage. Regular preventative maintenance for your diesel engine spare parts includes checking the coolant level daily, replacing the Thermostat every 2-3 years, and flushing the cooling system annually to ensure longevity of your Cylinder Block and Cylinder Head.
Honour Time Machinery Limited is a dedicated manufacturer and supplier of diesel engine assemblies and essential spare parts for top brands globally, ensuring quality and factory-direct value for the construction machinery industry.
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