The genuine XCMG Engine Oil/Coolant Module with OEM number 800172774 is a fully integrated thermal management unit designed for XCMG articulated dump trucks, wheel loaders, and heavy off-highway equipment. This module combines oil filtration, oil cooling, coolant filtration, and thermostatic bypass functions in a single compact housing. By precisely controlling engine and transmission oil temperatures, the 800172774 module maximizes component life, reduces parasitic losses, and ensures reliable operation in extreme ambient conditions from -40°C to +55°C.
The XCMG Engine Oil/Coolant Module 800172774 replaces multiple separate components: an oil cooler, oil filter head, coolant filter, and thermostat housing. By integrating these functions into a single, compact aluminum housing, it reduces potential leak points by 60% and simplifies engine bay layout. The module’s stacked-plate heat exchanger ensures efficient heat transfer while withstanding thermal shock cycles without gasket failure.
On AD-series articulated dump trucks, the 800172774 module maintains engine oil temperature between 95°C and 110°C under full load at 40°C ambient. This optimal range reduces oil oxidation, prevents sludge formation, and minimizes ring sticking. Field data from Australian mines show a 35% increase in engine overhaul intervals when using the OEM integrated module vs. aftermarket add-on coolers.
The oil circuit inside the 800172774 module features a full-flow spin-on filter with a 20-micron absolute rating and a bypass valve set to 1.8 bar. A dedicated oil thermostat (wax-pellet) directs cold oil directly back to the engine until it reaches 85°C, reducing warm-up time by up to 40% in cold climates. Once open, oil passes through the stainless steel plate cooler, which drops temperature by 20–30°C depending on load.
The module also includes a 1/8″ NPT port for an external oil pressure sensor, allowing the ECU to monitor filter condition. When filter differential pressure exceeds 2.5 bar, the bypass opens to prevent oil starvation while alerting the operator via a dashboard warning light. This protects the turbocharger and bearings during cold starts with thick oil.
The coolant side of the 800172774 module integrates a spin-on coolant filter that removes abrasive particles and also contains a slow-release DCA (supplemental coolant additive) pellet. This protects cylinder liners from cavitation erosion. The dual thermostat system (primary open at 82°C, secondary at 88°C) ensures rapid engine warm-up and stable temperature control during varying loads.
In AD60 trucks, the coolant flow bypass also feeds the transmission oil cooler and retarding brake cooler. The module’s compact design eliminates four external hoses and three brackets compared to traditional layouts, reducing assembly time and potential leak paths. Coolant filter replacement interval is 1000 hours or annually, matching standard maintenance schedules.
To replace or install the XCMG Engine Oil/Coolant Module 800172774, first drain the engine oil and coolant. Remove the old module by disconnecting the oil lines, coolant hoses, and mounting bolts (four M10×1.5 bolts at 45 Nm). Clean the mounting flange on the engine block and inspect for flatness. Install a new gasket (included with genuine XCMG module).
Torque the module to 50 Nm in a cross pattern. Refill with the correct engine oil (XCMG recommends 15W-40) and coolant (50/50 ethylene-glycol). Pre-fill the oil filter with clean oil before screwing it onto the module. Start the engine and check for leaks at all connections. After running for 10 minutes, re-torque the mounting bolts.
Regular maintenance: Replace the oil filter every 500 hours (or per engine OEM), coolant filter every 1000 hours, and inspect the module’s external surfaces for corrosion. The stainless steel plate cooler cannot be serviced separately – if oil contamination occurs (e.g., from engine failure), the entire module must be replaced to avoid cross-contamination of the coolant circuit.
Counterfeit modules bearing the OEM number 800172774 often use low-grade aluminum castings with internal porosity, leading to coolant leaks into the oil circuit. This causes oil emulsification (milky appearance) and rapid bearing failure. Genuine XCMG modules are X-ray inspected for casting voids and pressure-tested to 2.5 MPa (water) before shipment.
Another common issue is thermostat failure in copy modules – either stuck open (overcooling, high fuel consumption) or stuck closed (overheating, blown head gaskets). Genuine XCMG 800172774 modules use dual wax-pellet thermostats sourced from Wahler, tested for 100,000 cycles. Look for the XCMG logo cast into the housing and a holographic label on the box.
Corrosion: Non-genuine modules may use untreated aluminum that fails within 2 years in high-humidity environments. XCMG’s A380 housing receives a trivalent chrome conversion coating, passing 500 hours of salt spray testing (ASTM B117).
The integrated design of the 800172774 module reduces total cost of ownership in three ways: lower component cost (one module instead of four separate parts), reduced labor for installation (saves 2–3 hours per truck), and improved fuel economy (optimal oil temperature reduces parasitic drag). Fleet data shows a 2.5% reduction in fuel consumption after retrofitting the integrated module on AD60 trucks.
Predictive maintenance: By monitoring oil filter differential pressure via a telematics-connected sensor, operators can schedule filter changes based on actual condition rather than fixed intervals. This extends filter life by up to 30% in clean environments. Additionally, the module’s integrated thermostats prevent cold start wear, which accounts for 60% of engine wear over the lifetime.
Payback analysis: The XCMG 800172774 module costs approximately $420. Compared to buying separate OEM components (oil cooler $280, filter head $90, coolant filter base $70, thermostat housing $110 – total $550), the integrated module saves $130 upfront. Adding reduced labor and fuel savings, ROI is achieved within 6 months.
Every XCMG Engine Oil/Coolant Module 800172774 is manufactured in XCMG’s ISO 50001-certified plant in Xuzhou. Each module undergoes 100% pressure testing, flow testing, and thermal cycle testing (5 cycles from -40°C to +120°C). XCMG provides a 24-month unlimited-hour warranty against manufacturing defects, including coolant leaks and thermostat failure.
Global stock is maintained at XCMG parts centers in China, Dubai, Belgium, USA, and Brazil. Emergency orders are shipped within 48 hours. XCMG also offers a core exchange program: return your failed module (any brand) for a discount on a new genuine unit. Each module comes with a detailed installation guide and a QR code linking to an online video tutorial.
Always insist on genuine XCMG 800172774 modules – substandard copies have been known to cause catastrophic engine damage. Verify authenticity by checking the laser-etched serial number on the mounting flange; you can also scan the QR code on the packaging to see the test certificate for that specific unit.
XCMG engineers tested the 800172774 module in some of the world’s harshest environments: -45°C cold soak in Heihe, China; +55°C desert operation in the Gobi; and high-vibration applications on rock trucks in Chilean mines. The module withstood 10,000 thermal shock cycles without leakage or loss of cooling performance.
Corrosion resistance: After 1000 hours of salt fog testing (ASTM B117), the module showed no pitting or thread seizure. This makes it suitable for coastal quarry operations and winter road salt exposure. The internal brazed plate cooler is resistant to cavitation and erosion even with high-velocity coolant flow.
For extremely dusty environments (mines), XCMG offers an optional pre-cleaner kit that attaches to the coolant filter breather, extending filter life by 300%. This accessory is available under part number 800172774-ACC1.
