BMW 5 6 Series E60 E61 E63 N62 Transmission Oil Cooler Line Pipe Return 7519262

BMW 5 6 Series E60 E61 E63 N62 Transmission Oil Cooler Line Pipe Return is an original transmission oil return line from the Oil coolers and lines group, designed for BMW 5 and 6 series models with the N62 engine. The component ensures a stable flow of oil between the transmission and the cooler, which supports a safe operating temperature for the automatic transmission and reduces the risk of overheating.

Specifications and technical data

• SKU: 7519262
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7519262
• Substitutable numbers: 7519262, 17227519262, 17227553262, 7553262
• Category: Oil Coolers & Lines

Purpose and function of the transmission oil return line

The transmission oil return line in BMWs with the N62 engine is responsible for transporting cooled oil from the cooler back to the transmission. A correctly selected and leak-free line:

• stabilizes transmission oil temperature during city and highway driving,
• reduces pressure drops in the transmission lubrication system,
• decreases the risk of slipping and jerking during gear changes,
• supports the service life of clutch plates and hydraulic components.

Thanks to its factory geometry and fitment for the oil cooling system in BMW 5 and 6 series with the N62 engine, the line maintains the correct routing in the engine bay and does not interfere with other components.

Benefits of using an original BMW line

Using an original line from the Oil coolers and lines group instead of a leaking or deformed component allows for the restoration of proper transmission oil cooling system operation. In practice, this means:

• more predictable automatic transmission performance under high loads,
• reduced risk of oil leaks around the cooler and quick-connect fittings,
• maintenance of proper oil viscosity across a wide temperature range,
• better protection of the transmission during dynamic driving and towing.

The original construction of the line ensures compliance with BMW's factory requirements regarding internal diameter, pressure resistance, and operating temperature, which is crucial for the stability of the entire system.

Component condition and installation aspects

The offered line is in Used condition, meaning it has been removed from a vehicle and is intended for users looking for an economical solution that is still consistent with factory specifications. This type of component is particularly useful for repairs where maintaining the original geometry of the transmission oil cooling system is important.

Before installation, a standard workshop procedure is recommended, including checking the tightness of connections, the condition of quick-connect fittings, and verifying the correct routing of the line relative to heat shields and drivetrain suspension components. A correctly installed line minimizes the risk of chafing and localized overheating.

Impact of a functional oil cooling system on transmission durability

A functional transmission oil return line has a direct impact on the operating temperature of the transmission and, consequently, its durability. Maintaining a stable oil circulation:

• limits transmission oil degradation at high temperatures,
• reduces stress on seals and friction elements,
• allows for smooth gear shifting over a longer period of operation.

If you want to better understand how the cooling system affects the condition of the powertrain and transmission, it is worth reading the article describing engine overheating and the role of oil and coolant radiators: Engine cooling system – overheating, repair, and used radiators.

Expanding the BMW oil cooling system

If you are planning a comprehensive repair or upgrade of the oil cooling area in your BMW and need other components from the same group, such as additional lines, oil coolers, or fittings, check out the available parts in the BMW oil coolers and lines category.