

The Engine oil filter and cooler system on the HOWO MAX 4X2 MC13 engine maintains oil cleanliness and temperature, ensuring long engine life. This Engine oil filter and cooler assembly includes the oil module, sealing gaskets, high-strength bolts, angular flange, plugged pipes, screw plug, composite washer, and assembly lubricant. When you choose authentic Howo Parts, this Engine oil filter and cooler kit guarantees leak‑free operation and proper oil flow. Below are detailed descriptions of every component included with this Engine oil filter and cooler assembly.
The engine oil module is the main housing that contains the full-flow oil filter and the oil cooler core. This Engine oil filter and cooler component is made from cast aluminum with integral oil passages. It mounts directly to the engine block and routes oil through the filter and cooler before returning it to the main gallery. The module includes the bypass valve and a mounting pad for the oil pressure sensor.
This flat gasket seals the interface between the engine oil module and the engine block. The Engine oil filter and cooler gasket is made from fiber-reinforced rubber with a steel carrier, designed to withstand oil temperatures up to 150°C. It compresses to form a leak-proof seal under the module bolts.
Ten M10x80 flange bolts with class 10.9 secure the engine oil module to the engine block. These Engine oil filter and cooler bolts have a length of 80mm, passing through the module flange and gasket. Torque to 50 Nm. The flange head distributes load, and the thread locking patch prevents loosening.
Four M10x130 flange bolts are used where the Engine oil filter and cooler module requires deeper thread engagement, such as at the lower mounting bosses. The longer length reaches through additional brackets or spacers. Torque to 50 Nm as well.
One M10x110 flange bolt is a special length used for a single deep boss on the Engine oil filter and cooler module. The 110mm length provides extra grip without bottoming out. Torque to 50 Nm. Replace with a new bolt if removed.
The angular flange is a steel adapter that changes the direction of oil flow from the engine block to the Engine oil filter and cooler module. It is bolted between the module and the block, and includes its own sealing gasket. This component is necessary for certain engine configurations where straight mounting is not possible.
This gasket seals the angular flange to the engine block. The Engine oil filter and cooler gasket is made from similar fiber-reinforced material as the module gasket and must be replaced whenever the angular flange is removed. It is pre-cut to match the unique shape of the flange.
This plugged pipe is a steel tube with a 20mm outer diameter and DN14 internal diameter, used to block an unused oil gallery port on the Engine oil filter and cooler module. It is pressed into the module housing and sealed with an O‑ring, preventing oil leakage from the unused port.
A larger plugged pipe with 37mm outer diameter and DN29 internal diameter seals a bigger unused oil port on the Engine oil filter and cooler module. It is also pressed in and sealed, ensuring that pressurised oil does not escape from the module.
Three M8x50 flange bolts secure the angular flange to the engine block or the engine oil module. These Engine oil filter and cooler bolts are grade 10.9 with a thread locking patch. Torque to 25 Nm. The length of 50mm accommodates the combined thickness of the flange and gasket.
The M18x1.5 screw plug closes an auxiliary oil port on the Engine oil filter and cooler module. It is made from zinc‑plated steel with a hexagon socket drive. Apply sealant to the threads before installation. Torque to 35 Nm.
This composite washer has an inner diameter of 18.7mm and outer diameter of 26.0mm, with a steel outer ring bonded with FPM1 rubber. It seals the screw plug on the Engine oil filter and cooler module, preventing oil leaks. Replace the washer if the plug is removed.
A 20kg container of assembly lubricant is supplied for lubricating O‑rings and bolt threads during Engine oil filter and cooler installation. This mineral‑oil based lubricant reduces friction during bolt torquing and prevents rubber seals from tearing. Use sparingly; do not use on electrical components.
Engine oil filter and cooler – genuine HOWO oil module and hardware kit for MAX 4X2 MC13
This Engine oil filter and cooler kit includes the oil module, all sealing gaskets, every mounting bolt (M10 and M8), the angular flange, plugged pipes, screw plug, composite washer, and assembly lubricant. No extra parts needed for a full installation.
All Engine oil filter and cooler bolts are property class 10.9 with MAN183 thread locking patches. They resist loosening under vibration and provide consistent clamp load for the module gasket, ensuring oil‑tight sealing.
The Engine oil filter and cooler gaskets are made from fiber‑reinforced rubber rated for 150°C oil. The plugged pipes are pressed in and the screw plug uses an FPM composite sealing washer to prevent oil leaks.
A 20kg container of assembly lubricant is supplied to ease installation of the Engine oil filter and cooler O‑rings and bolts, reducing the risk of thread galling and seal damage during assembly.
The engine oil pump draws oil from the sump and sends it through the engine oil module. Inside the module, the oil first passes through the full‑flow filter element, where suspended contaminants are removed.
Then the oil flows through the oil cooler core, a stack of finned plates that transfers heat to the engine coolant. The cooled and filtered oil then exits the module and goes to the main oil gallery to lubricate the crankshaft, camshaft, and turbocharger.
The bypass valve within the module allows unfiltered oil to circulate if the filter becomes clogged. The angular flange adapts the oil flow direction for MC13 engine configurations, and the plugged pipes seal unused ports. The screw plug provides access for oil pressure testing. Without a properly sealed Engine oil filter and cooler assembly, the engine would lose oil pressure and suffer catastrophic damage.
Before installation, drain the engine oil and remove the old module. Clean the engine block mounting surface. Apply a thin film of assembly lubricant to the new sealing gasket. Position the angular flange (if required) with its gasket, securing it with the three M8x50 bolts (torque 25 Nm). Install the plugged pipes into the module if they are not already installed.
Place the main module gasket on the block, then mount the engine oil module. Insert the M10x80, M10x130, and M10x110 bolts in their correct positions, hand‑tightening them. Torque all M10 bolts to 50 Nm in a crossing pattern starting from the centre. Install the screw plug with the composite sealing washer (torque 35 Nm). Refill with fresh engine oil, replace the spin‑on filter element, and start the engine. Check for oil leaks at all gasket joints and plugs. The Engine oil filter and cooler is now ready for service.
If oil leaks from the engine oil module flange, the gasket may be damaged or the bolts may be undertorqued. Retorque the M10 bolts to 50 Nm. If the leak persists, replace the gasket. Oil seepage from the screw plug indicates a damaged composite sealing washer; replace the washer and retorque the plug.
Low oil pressure after module replacement may be due to a missing bypass valve or a blocked filter. Ensure the filter element is genuine and correctly installed. If the oil cooler fails internally, coolant may appear in the oil (milky emulsion) or oil in the coolant (oil slicks in the reservoir). Replace the entire engine oil module if the cooler core is leaking. A loose plugged pipe can cause a large oil leak; press it back in using a drift.
The engine oil filter element inside the module should be replaced at every oil change, typically every 40,000 km. The oil cooler core does not have a service interval, but it should be inspected for external leaks annually. The module gasket and the angular flange gasket should be replaced any time the module is removed from the engine.
The screw plug composite washer should be replaced if the plug is ever loosened. The assembly lubricant container should be kept sealed to avoid contamination. Inspect the Engine oil filter and cooler bolts for corrosion during routine service; replace any that show rust or thread damage. A well‑maintained oil module will last the life of the engine.
This Engine oil filter and cooler kit is designed for the SINOTRUK MC13 engine used in HOWO MAX 4X2 tractors, SITRAK C7H, and HOWO T7H trucks.
It fits all production years from 2018 onward. The kit is also compatible with the MC11 engine, though the bolt lengths may differ slightly. This Engine oil filter and cooler assembly is not compatible with older WD615 or D10 engine series. The angular flange is required only on certain MC13 variants; if your engine does not have the flange, the module bolts directly to the block. Always verify your engine serial number before ordering.
Aftermarket Engine oil filter and cooler modules are often made from inferior castings that can crack under thermal stress. The gaskets in copy kits may be made from ordinary rubber that hardens and leaks within months.
Counterfeit bolts may not meet grade 10.9 and can break, causing the module to fall off. The plugged pipes in non‑genuine kits may not be correctly sized, leading to oil leaks. Genuine HOWO Engine oil filter and cooler components are manufactured to SINOTRUK’s exact specifications, using certified aluminum castings, high‑temperature gaskets, and grade 10.9 fasteners. The small additional cost of a genuine Engine oil filter and cooler is insignificant compared to the cost of an engine rebuild caused by loss of oil pressure or contamination.