SKP SK603351 Engine Coolant Reservoir - Front

Engine Coolant Reservoir for BMW Applications

Restore proper coolant storage and expansion control with this SKP engine coolant reservoir, part number SK603351. It is listed for a wide range of BMW models, including BMW 525i, BMW 530i, and BMW 650Ci applications, with fitment that spans multiple model years and positions shown in the catalog data.

Key Features

• Engine coolant reservoir for cooling system service and replacement.
• Cataloged for BMW applications across 2004-2011 model years.
• Fits front-position applications where noted in the fitment data.
• Direct replacement-style part number SK603351 for common cooling system repairs.
• Cross-references Dorman - OE Solutions 603-351 for the same application.

Detailed Description

The SKP SK603351 engine coolant reservoir is a replacement component for BMW cooling systems that need a new expansion tank or coolant storage reservoir. It is listed for multiple BMW 5 Series and 6 Series applications, including BMW 525i, BMW 530i, BMW 550i, and BMW 650Ci, making it a practical choice when servicing a leaking, cracked, or aging reservoir. The catalog fitment includes front-position applications as well as entries marked N/A, so the exact vehicle configuration should be matched to the fitment table before ordering.

This part cross-references Dorman - OE Solutions 603-351 for the same application. Part number SK603351 may also be searched alongside BMW cooling system replacement terms when sourcing a coolant reservoir for BMW 525i, BMW 530i, or BMW 650Ci models.

What It Is Used For

• Replacing a cracked coolant reservoir.
• Addressing coolant loss from reservoir leaks.
• Restoring proper coolant expansion and storage.
• Servicing aging cooling system plastic components.
• Supporting repair of BMW cooling system warning conditions tied to low coolant.

Installation Notes and Tips

Confirm the exact year, model, and position against the fitment table before installation. Inspect connected hoses, caps, and seals during replacement, since worn related components can contribute to coolant loss. Match the reservoir to the vehicle configuration shown for BMW 525i, BMW 530i, BMW 550i, and BMW 650Ci applications to avoid fitment errors.

Quality Assurance

SKP replacement parts are cataloged for direct application matching by vehicle fitment data. Verify part number SK603351 and the listed BMW application before installation.