Chery A5 Oil Pump (Part No.: 481H-1011030BA)
To put it simply, this is the "heart of the engine lubrication system" and a critical core component for your Chery A5. As an essential part of the engine’s internal lubrication and cooling system, the 481H-1011030BA
oil pump is installed inside the engine block, closely connected to the
crankshaft and oil pan. Its core role is to draw engine oil from the oil pan, pressurize it to a stable and appropriate pressure, and deliver it to all moving parts of the engine (such as crankshafts, camshafts, connecting rods, and bearings) through the oil passage. This ensures continuous lubrication, reduces friction and wear between components, dissipates heat generated by friction, and prevents component seizing or damage—directly determining the engine’s service life and stable operation, which is consistent with Chery A5’s focus on reliable performance and safety.
At its core, it adopts a high-reliability gear-type structure (a common and stable design for automotive oil pumps), consisting of four key components that work together to ensure efficient and stable oil supply: a drive gear, a driven gear, a precision pump body, and a pressure relief valve. Following Chery’s strict engine component standards, the pump body is made of high-strength cast iron with precision machining, ensuring good sealing and pressure resistance; the drive and driven gears are made of wear-resistant alloy steel,经过 precision grinding to ensure tight meshing, minimal oil leakage, and long-term wear resistance; the built-in pressure relief valve automatically adjusts the oil pressure to avoid excessive pressure that could damage the oil passage or seals, and prevent insufficient pressure that would lead to poor lubrication. The integrated sealing rings and mounting components ensure tight fitting with the Chery A5’s engine block, preventing oil leakage and ensuring stable operation even in the harsh high-temperature and high-vibration environment of the engine.
Without this oil pump, the Chery A5’s engine would suffer irreversible damage in a short time: moving components would lack lubrication, leading to severe friction, overheating, and rapid wear; the engine may seize during operation, resulting in costly repairs or even engine scrapping; heat generated by friction cannot be dissipated in time, further accelerating component damage. Chery has tailor-made the 481H-1011030BA oil pump according to the Chery A5’s engine structure and lubrication system requirements, with customized gear specifications, pump body size, and mounting points that perfectly match the original engine’s oil passage and crankshaft drive system. A generic aftermarket oil pump is likely to have mismatched gear precision (resulting in insufficient oil pressure or severe leakage), inferior material strength (easily worn or cracked), or improper pressure relief valve settings (leading to oil pressure instability), which not only fails to protect the engine but also may cause secondary damage—similar to the safety hazards caused by defective fuel pumps in some recalled vehicles.
Compatibility: Exclusive to Chery A5 Models
This oil pump (481H-1011030BA) is specially designed for Chery A5 models, matching the vehicle’s engine (481 series) structure and lubrication system parameters. Incorrect matching will seriously affect engine operation and may cause irreversible damage. Please pay attention to the following compatibility information:
Compatible Models: All variants of Chery A5 (matches the 481 series engine of the model; the part number 481H-1011030BA confirms its dedicated configuration, perfectly matching the engine’s oil passage, crankshaft drive, and mounting points).
Incompatible Models:
Other Chery Models (e.g., Arrizo series, Tiggo series, X55 Pro): Different engine models and lubrication system parameters mean the oil pump’s gear size, pressure setting, and mounting points are incompatible, leading to improper installation or oil supply failure—similar to how different fuel pump part numbers are not interchangeable.
Non-Chery Vehicles: Engine structure, oil pressure requirements, and mounting standards differ significantly, making installation impossible and potentially damaging the engine.
Chery A5 with Non-481 Series Engines: Different engine specifications require oil pumps with matching pressure and gear parameters, and this part cannot be used interchangeably.
Installation & Maintenance: Professional Operation Critical
Installation: 40–60 Minutes (Requires Professional Tools & Precision Calibration)
Replacing this oil pump involves disassembling the engine oil pan, separating the pump from the crankshaft, and requiring precise alignment and sealing—improper operation may lead to oil leakage, oil pressure instability, or engine damage. Therefore, professional installation by qualified technicians is strongly recommended:
Preparation: Park the Chery A5 on a flat surface, turn off the engine, and allow it to cool completely. Drain the engine oil from the oil pan, then remove the oil pan and any components blocking access to the oil pump (e.g., connecting rod covers, oil baffle).
Remove the Old Oil Pump: Disconnect the oil pump from the crankshaft drive mechanism, loosen and remove the mounting bolts, then carefully take out the old oil pump. Clean the mounting surface of the engine block and oil pan to remove oil sludge and debris.
Install the New Oil Pump: Install a new sealing ring on the 481H-1011030BA oil pump, align it with the mounting points and crankshaft drive, fasten the mounting bolts to the specified torque. Ensure the gears mesh properly with the crankshaft and the pressure relief valve is functioning normally.
Reassemble & Test: Reinstall the oil baffle, oil pan, and other components, then add the specified type and amount of engine oil. Start the engine, check for oil leakage (focus on the oil pump mounting surface and oil pan), and use a pressure gauge to confirm the oil pressure is within the normal range. Test drive at different speeds to ensure the engine operates smoothly with no abnormal noise or warning lights.
Brief Summary: Chery A5 Oil Pump (481H-1011030BA)
As the core of Chery A5’s engine lubrication system, the 481H-1011030BA oil pump is installed inside the engine block, connected to the crankshaft and oil pan. Its core function is to draw, pressurize and deliver engine oil to all moving engine components, ensuring lubrication, reducing friction and wear, dissipating heat, and preventing component damage, which is vital to the engine’s service life and stable operation.
It adopts a gear-type structure, including drive/driven gears, a precision cast iron pump body, a pressure relief valve, and sealing rings, ensuring efficient oil supply, stable pressure and no leakage. It is exclusively compatible with all Chery A5 variants with 481 series engines, incompatible with other models or non-481 series engines.
Professional installation takes 40–60 minutes. Maintenance requires regular oil changes, oil pressure inspection, leakage check and cleaning. Original parts guarantee perfect compatibility, reliable quality and effective engine protection, avoiding aftermarket defects.
