BMW M4 F87 M2 LCI F80 M3 F82 F83 Oil Suction Pipe Oil Sump Petrol S55 7846385

BMW M4 F87 M2 LCI F80 M3 F82 F83 Oil Suction Pipe Oil Sump is a component from the Oil pumps and parts category, designed for BMW M-series petrol engines based on the S55 unit. This OEM solution ensures proper supply to the lubrication system, which translates into stable engine operation during dynamic driving.

Specifications and technical data

• SKU: 7846385
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7846385
• Substitutable numbers: 7846385, 11417846385
• Fuel type: Petrol
• Category: Oil Pumps & Parts

Purpose and function in the S55 engine

The oil suction pipe in S55 engines is responsible for drawing oil from the sump and transferring it to the pump, and subsequently to the lubrication channels. In high-performance M petrol units operating at high RPMs, the correct operation of this component is crucial for protecting the bearings, crankshaft, turbochargers, and other moving parts.

In BMW M2 LCI, M3, and M4 models with the S55 engine, the oil suction pipe is matched to the specific design of the sump and lubrication system, engineered for intense track and road loads. Using an original component from this group allows for maintaining factory oil flow parameters and reducing the risk of pressure drops during sudden lateral loads.

Benefits of using an original BMW component

Choosing an original oil suction pipe for the S55 engine ensures:

• preservation of factory geometry of oil channels and the filter screen,
• proper cooperation with the stock oil pump and oil sump,
• stable lubrication at high RPMs and heavy loads,
• consistency with BMW factory service procedures.

As a result, the lubrication system remains predictable, and the risk of engine seizure during sports use is limited. This is particularly important in powerful M petrol engines, where thermal and mechanical loads are significantly higher than in standard units.

Selection and installation in service practice

The oil suction pipe in the S55 engine is a component mounted in the lower part of the power unit, which requires removing the oil sump and following appropriate service procedures. In workshop practice, replacing this component is often performed during:

• engine overhaul or regeneration,
• diagnostics of oil pressure issues,
• lubrication system upgrades for intense track driving.

A used OEM element allows for cost-effective repair while maintaining the original technical specification. Oil pumps and parts from dismantling are frequently chosen by workshops specializing in BMW M, as they enable maintaining high quality at reasonable service costs.

Condition, verification, and operation

The item comes from dismantling and is intended for reinstallation after standard workshop verification. Before installation, it is recommended to thoroughly clean the channels, inspect the suction screen, and check for any signs of mechanical damage. A properly prepared oil suction pipe can work seamlessly with the existing lubrication system in the S55 petrol engine.

To maximize the potential of a used component, it is worth using oil with the specification recommended by the manufacturer and adhering to service intervals. It is also good practice to periodically check the lubrication system after intense track use, which allows for early detection of any irregularities.

Lubrication system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as pump housings, suction modules, or additional oil lines, check the available parts in the BMW oil pumps and parts category.

When working with components from dismantling, it is worth knowing good practices for their operation and maintenance. Practical tips on extending the durability of used components can be found in the article How to extend the life of used car parts?, which discusses, among other things, the principles of handling lubrication system elements.

If you are simultaneously carrying out post-accident repairs and combining engine work with bodywork restoration, the guide Bodywork and chassis – post-accident repairs using parts from dismantling may also be helpful, describing the safe use of original used parts in a broader service process.