BMW E81 E87 116i E90 316i N45N N43 Torque Converter Automatic Gearbox 7588730

Description

BMW E81 E87 116i E90 316i N45N N43 Torque Converter Automatic Gearbox is a specialized drivetrain component designed for BMW vehicles equipped with an automatic transmission. It is responsible for the smooth transfer of torque from the engine to the gearbox, improving gear shift comfort and overall drivetrain refinement. This used OEM component is a sensible choice for professional repairs or the refurbishment of the drivetrain system in BMW 1 Series and 3 Series cars.

Specifications and technical data

• SKU: 7588730
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7588730
• Substitutable numbers: 7588730, 24407588730, 7581800, 24407581800, 8J0881577, 8J0 881 577
• Gearbox type: Automatic
• Category: Torque Converters

Purpose and function in the drivetrain

The torque converter in BMW models with N45N and N43 engines works in conjunction with the automatic transmission, ensuring smooth acceleration, reduction of torsional vibrations, and stable power transfer across the entire rev range. This component acts as a hydraulic clutch that:

• dampens engine irregularities at low RPMs,
• facilitates smooth starting without jerking,
• supports gear changes while maintaining driving comfort,
• protects the gearbox against dynamic overloads.

A properly selected torque converter is crucial for the durability of the automatic transmission and the overall refinement of the drivetrain.

Compatibility with BMW models

The offered component is intended for specific versions of the BMW 1 Series E81/E87 116i and 3 Series E90 316i with N45N and N43 engines, paired with an automatic transmission. Using an original torque converter from this model group allows for the preservation of factory drivetrain performance parameters, including:

• correct matching to the engine’s torque characteristics,
• compatibility with the automatic transmission control software,
• appropriate engagement and lock-up characteristics of the torque converter.

Before installation, it is recommended to verify compatibility with the specific vehicle equipment version based on the VIN and BMW catalog data.

Technical characteristics and benefits of use

The torque converter in this offer has been designed to work with an automatic transmission, which translates into optimized performance characteristics under typical urban and extra-urban driving conditions. Using an original component ensures:

• stable torque transfer without excessive slippage,
• better cooperation with the transmission control system,
• maintenance of factory acceleration and throttle response parameters,
• reduced risk of drivetrain malfunctions after replacement.

The used OEM element is a particularly cost-effective solution for repairs where a combination of build quality and service cost control is essential.

Condition, installation, and service aspects

The offered torque converter is a used part, sourced from dismantling, which allows for an economical repair of the drivetrain while maintaining original BMW specifications. Before installation, it is recommended to:

• inspect the transmission oil cooling system,
• change the oil in the automatic transmission according to the manufacturer’s recommendations,
• check the tightness of connections and the condition of mounts.

Professional installation by a specialized automatic transmission service minimizes the risk of subsequent faults and allows you to fully utilize the potential of the installed torque converter.

Expanding the BMW drivetrain – related components

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other elements from the same group, such as additional torque converters, components working with the automatic transmission, or other hydraulic parts, check the available parts in the BMW Torque Converters category.

For drivers interested in a broader perspective on the cost-effectiveness of using dismantled components in premium cars, an article describing the advantages of original used components may be helpful – more information can be found in the material about used parts for Mercedes from dismantling, which well illustrates the approach to the economical operation of premium segment cars.