BMW E87 E90 E91 M47N2 118d 120d 320d 325d Engine Radiator 7790297

BMW E87 E90 E91 M47N2 118d 120d 320d 325d Engine Radiator is an original cooling system component designed for 1 and 3 series models, ensuring stable heat dissipation from the engine. Thanks to its factory origin from BMW, the radiator maintains proper fitment with mounts, connectors, and air ducts, which facilitates installation and reduces the risk of leaks. This used component allows for an economical yet technically sound repair of the cooling system.

Specifications and technical data

• SKU: 7790297
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7790297
• Substitutable numbers: 17117790297, 7790297
• Category: Caps

Purpose and function of the radiator

The water radiator in BMW E87, E90, and E91 models is responsible for effectively dissipating heat from the coolant, stabilizing the operating temperature of the power unit. A properly selected radiator:

• maintains optimal engine temperature across a wide range of loads,
• works in harmony with the factory fan and air duct shrouds,
• ensures adequate cooling performance in city traffic and at higher speeds.

Thanks to a design consistent with BMW's factory specifications, this component integrates with the existing piping system, expansion tank, and temperature sensors without the need for system modifications.

Original origin and BMW fitment

The presented radiator comes from the BMW line, which means it maintains factory manufacturing standards and compatibility. The original core geometry and connection ports translate into:

• secure fitment with the front crossmember and support frame,
• proper alignment with the fan and air shrouds,
• no need for modifications to brackets or hoses.

For workshops and users, this means predictable installation, reduced labor time, and a lower risk of operational issues resulting from the poor fitment of aftermarket replacements.

Used condition and economic benefits

The item is offered in used condition, which allows for a significant reduction in repair costs compared to a new OEM part. With proper verification before installation, the radiator can still provide stable cooling system performance, maintaining a performance margin suitable for daily operation.

Choosing a used BMW radiator is particularly beneficial for:

• post-accident repairs,
• restoring a vehicle to working order after a cooling system failure,
• economical restoration of older 1 and 3 series models.

Practical installation tips

Before installation, a standard workshop procedure is recommended: checking for leaks, the condition of the connectors, threads, and mounting surfaces. After installation, it is necessary to properly bleed the cooling system and use coolant with the specifications recommended by the vehicle manufacturer. This approach minimizes the risk of engine overheating and ensures stable operation in the long term.

Expanding your BMW cooling system upgrades

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 covers, trims, or additional moldings, check out the available parts in the BMW Trims category.

Technical support when working with used components

When working with used powertrain and cooling components, it is worth following diagnostic procedures to reduce the risk of re-failure. Additional tips on verifying the condition of key components can be found in the article: Buying a used engine: 5 things you must check before installation. Although the text focuses on power units, the principles of inspection and preparation for installation described there can be successfully applied to other used components in the engine bay.