Skoda Octavia Mk3 5E Oil Filter Housing Oil Cooler 1.6 TDI Diesel 03N115389B

Skoda Octavia Mk3 5E Oil Filter Housing Oil Cooler 1.6 TDI Diesel is a component from the Oil coolers and lines group, designed for the lubrication system of a diesel engine. It ensures stable oil cooling and proper routing of the lubricating medium, which translates into safe operation of the power unit and reduces the risk of overheating.

Specifications and technical data

• SKU: 03N115389B
• Mark: Skoda
• Condition: Used
• OEM Part Number: 03N115389B
• Substitutable numbers: 03N115389B, 03N 115 389 B, 03N117021, 03N 117 021
• Fuel type: Diesel
• Part type: Oil Cooler
• Category: Engine Oil Coolers & Lines

Purpose and function in the lubrication system

The filter housing integrated with the oil cooler in the 1.6 TDI version is responsible for routing oil within the filter area and effectively cooling it during engine operation. In Diesel engines, the operating oil temperature is high, which is why an efficient oil cooling module is crucial for the durability of the bearings, turbocharger, and other lubrication system components.

A properly selected filter housing with an oil cooler helps to:

• maintain a stable oil temperature across a wide range of engine loads,
• ensure proper oil flow through the filter element,
• reduce pressure drops in the lubrication system,
• decrease the risk of engine seizure during intensive use.

Compatibility and OEM identification

The presented item is a part dedicated to the Skoda brand, which makes it easy to match to the specific configuration of the 1.6 TDI engine in the Octavia Mk3 model. Thanks to the use of the original OEM part number and available replacement numbers, precise verification of compatibility with a specific engine version and vehicle year is possible.

In case of doubts during selection, it is worth using the VIN and OEM number – this allows you to avoid assembly problems and ensures proper cooperation with the existing cooling and lubrication system. Practical tips on such verification can be found in the guide how to choose the right car part by VIN and OEM number, where the process of checking the compatibility of used components is described step by step.

Performance characteristics and benefits of use

The filter housing module with an oil cooler in the 1.6 TDI engine works in direct contact with hot oil and coolant, so its technical condition has a significant impact on the service life of the power unit. Using the correct component allows you to:

• maintain the appropriate oil temperature during city and highway driving,
• reduce the risk of local overheating within the engine block,
• ensure stable operating conditions for the turbocharger and timing system,
• limit oil consumption resulting from overheating.

Combined with regular oil and filter changes, a functional oil cooler in the filter housing is an important element of preventive maintenance, especially in modern diesel units where thermal loads are high.

Condition, origin, and assembly aspects

The offered item is in Used condition, which means it comes from dismantling and was previously used in a vehicle. This type of part allows for an economical repair of the lubrication system while maintaining the original design and geometry intended by the manufacturer. Before installation, it is recommended to perform a standard check for leaks, cleanliness of oil channels, and the contact surface with the engine block and filter.

For proper installation, it is important to use new seals and follow the correct bolt tightening sequence in accordance with the service documentation. This helps to avoid micro-leaks of oil or coolant and ensures even pressure of the module against the block surface.

Technical support and additional materials

The oil cooling system is an integral part of the entire engine cooling system. Symptoms such as an increase in operating temperature, a drop in oil pressure, or traces of emulsion may indicate problems within the oil cooler or other components. To better understand the relationships between the oil cooler, coolant, and the general operating temperature of the unit, it is worth reading the article Engine cooling system – overheating, repair, and used radiators, which discusses the impact of efficient cooling on engine durability.

If you are planning a comprehensive repair or upgrade of the engine area in your Skoda and need other elements from the same group, such as additional oil coolers, oil lines, or lubrication system connectors, check the available parts in the Skoda oil coolers and lines category.