The Volvo Parts, Accessories &
Performance Specialists Since 1963

QuietCast Front Brake Rotor 320mm - P1 C30 C70 S40 V50

Bosch QuietCast 52011379 - 124014

Item Number
Bosch QuietCast
Mfr Part Number
Brand Classification
Units Per Car
Brake Rotor Diameter
One Year Parts Warranty
Product Group
Repair & maintenance
OE References
Genuine Volvo - 31400942, 274521, 31262720, 31302573, 31329122

Product Description

Please note these Bosch brake rotors have a pretty healthy smearing of transit coating. This keeps them fresh and prevents corrosion before install but it's important you thoroughly clean the swept surfaces with a solvent like Brakleen before use.

Additional Keywords: DISC

Potential Product Fitment Issues

These brakes fit cars with what Volvo calls the "16.5 inch wheel brake package," meaning 17in (or some specific 16in) wheels are needed to clear the brakes.

Many T5 manuals came with these brakes, but we have also seen many cars that came with the smaller 300mm brake package. To make certain, look for variant code RB03 for your car's VIN in VIDA, or else measure your current brake disc diameter to make sure they're 320mm.

Technical Tips & Articles

About Bosch QuietCast

You might think that all auto parts are created equal. However, nothing could be further from the truth. High-quality auto parts will improve your car’s performance, as well as its safety and fuel economy. If you want the best in auto parts for your vehicle, insist on Bosch auto parts. Bosch parts are engineered and factory tested to ensure years of reliable performance, regardless of extreme hot or cold temperatures. In fact, Fortune magazine named Bosch as the world’s most admired company in the motor vehicle parts industry.

Not only is Bosch the world’s largest supplier of auto parts, but this company also developed a lot of the technology that allows your car to run and operate. For example, Bosch developed the auto industry’s first fuel injection system with a high-pressure electric fuel pump back in 1967 and has continued to be the world’s premiere innovator of fuel injection technology ever since.

Bosch has been the world leader when it comes to spark plugs for well over a century, having invented the first commercially viable high voltage spark plug in 1902. Bosch developed the concept of heat ranges for spark plugs that is still used universally today, as well as pioneering the copper core and platinum plugs. It is no wonder that Popular Mechanics readers continue to rank Bosch spark plugs as the best year after year.

Bosch received its first brake system design patent in 1936 and since then has continued to lead the way in braking technology. In fact, one out of every three vehicles on the road today in North America includes Bosch braking components. For owners of European automobiles, Bosch offers the EuroLine, which offers the same look, feel, and performance as the original brake pads.

In addition to the superior craftsmanship of the parts themselves, Bosch takes outstanding customer service to a whole new level. For example, Bosch stands behind their products, offering a limited nationwide warranty on Bosch-installed parts.

Without a doubt, Bosch auto parts are superior to all other brands.  Instead of trusting your car’s performance to parts manufactured by imitators, choose Bosch parts that are made by innovators.

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