Above is the gas filter, covered with undercoating. The gas filter is located passenger side just forward of the rear axles. The band that holds the gas filter in place is usually stuck to the filter because of the undercoating. Put some WD 40 on the other side of the screw to help get the bolt off. Once the bolt is off you may find that you have twisted the holding band, not to worry just twist it back. After the 12 mm bolt is off, remove the masking tape (red arrow) from both ends of the filter connections. The connector by the green arrow already has the tape off. Your new filter comes with plastic caps on the ends of the filter, remove them and have them handy to put on your old filter when you remove the connections.

Above is the gas filter, covered with undercoating. The gas filter is located passenger side just forward of the rear axles. The band that holds the gas filter in place is usually stuck to the filter because of the undercoating. The yellow circle is the 12 mm bolt that holds the band in place. Put some WD 40 on the other side of the screw to help get the bolt off. Once the bolt is off you may find that you have twisted the holding band, not to worry just twist it back. After the 12 mm bolt is off, remove the masking tape (red arrow) from both ends of the filter connections. The connector by the green arrow already has the tape off. Your new filter comes with plastic caps on the ends of the filter, remove them and have them handy to put on your old filter when you remove the connections.

The new model Volvos have a "cabin filter" instead of a pollen filter. The difference is that the cabin filter, filters all the air all the time regardless of the recirculation button. The pollen filters on the 850 and S/V 70 series are located under the cowl at the bottom of the front windshield (passenger side)and filter the air when Not in the recirculation mode. Above is an example of the new and old filter. The age of the above filter is about 15K miles. The filter should be checked at every 7.5K service. If the filter should become clogged the A/C efficiency as well as blower air flow can be adversely effected.

The S80 has a cabin filter that is scheduled to be changed every 15,000 miles and my experience shows that the 15K interval is about right. The part number for the filter is 9204526, and can be purchased at any Volvo Dealer. The tools you will need are: inch small ratchet, 25mm torx bit, a large flat head screw driver, and about 15 minutes of time. To start with move the passenger seat all the way back, and take out any mats you have on the passenger floor. The mat only takes up about inch but later you'll see that every little bit of space is helpful when trying to get to the two back screws on the filter box.

Above is the passenger side of the car with the hood raised all the way up. The two red circles show the 25 torx screws almost all the way out. Remove the torx screws and lift up on the plastic covering as below. Red circle below shows the clip/fastener, lift up and the filter can be manipulated out, and the new one in. Above is the passenger side of the car with the hood raised all the way up. The two red circles show the 25 torx screws almost all the way out. Remove the torx screws and lift up on the plastic covering as below. Red circle below shows the clip/fastener, lift up and the filter can be manipulated out, and the new one in. Check them every 10,000 miles.