Your oil filter is the last line of defense before contaminants get into the heart of your vehicle. Those contaminants can lower your engine's performance and cause costly damage. All moving parts in an engine need clean oil to function. A premium filter maintains the quality of the oil circulating in the lubrication system, keeping your engine running efficiently for a lot longer. The Royal Purple Extended Life Oil Filter 20-8170 with silicone anti-drain back valves uses 100% synthetic micro-glass filtration media supported by steel mesh backing for superior particle removal. Royal Purple boasts 99% filtration efficiency at 25 microns or larger, and 80% at 10 microns. We don't believe in messing with perfection, so we only produce one type of oil filter with variations for different motor vehicles.
Royal Purple Extended Life Oil Filter 20-8170 for BMW Vehicles:

20,000 mile protection
99% filtration
OE replacement engine oil filter
Equivalent of:

Mobil 1 M1C-252A
AC Delco PF2248G
Vehicle Application:

2001 - 2005 BMW 320 Series
1999 - 2006 BMW 323, 325, 525 Series, X3, Z3, Z4
1996 - 2000 BMW 328, 528 Series, Z3
2001 - 2006 BMW 330, 530 Series X3, X5, Z3, Z4
WHEN TO CHANGE YOUR OIL FILTER:

Changing your oil yourself shouldn't take very long and can save you some money. The question we get most often is: when do oil filters need to be changed? If your car is still under warranty, follow the manufacturer's recommended change interval. If not, the filter and the oil go hand in hand. When the oil goes, the filter goes. Dirty or clogged oil filters can allow contaminants to pass through or block the flow of oil to your engine. It's not recommended to change our oil filter without changing the oil. You can install your oil filter using the instructions on the filter, using a filter wrench as needed. Royal Purple is compatible with all synthetic and conventional oils.

ABOUT ROYAL PURPLE FILTERS:

Royal Purple Engine Oil Filters are premium filters compatible with all synthetic and conventional oils. At Royal Purple, we focus exclusively on developing state-of-the-art lubricants to out-perform other oil brands. That includes best-in-class fuel system cleaners, synthetic gear oil, oil filters, and more to help you get peak performance out of your engine. Make your car, boat, motorcycle, snowmobile, or other motorized gear more reliable, and protect their longevity with the best lubricants, engine fluids, and oil filters.