One is a breather, and the other most likely connects to a device to measure the vacuum inside the airbox.
Follow the big hoses, its in a black box near the engine, with 4 clips holding it down, two in front, and two hinged clips in the back. Its best (and easiest) to disconnect the air hoses before opening the air filter box.
There are just two hose clamps, one the screws, and the other that is compression (spring) held. Unscrew the one to loosen, use pliers to squeeze the other, and slide it back, then you can slip the hoses off the pieces they are attached to.
If it the same as the 1998 model, there should be a black plastic box on the right side of the engine compartment that says "remove to service air filter element below", the filter is NOT in this box, it is in another plastic box below this one. You must remove the two screws on the box you see, romove the two hoses connected to it, one you just pull off, the other you must remove a clamp to remove. After you do this you can see the box containing the filter it is set vertically and has two metal clips keeping it closed, just reomve the clips, and change the filter, dont forget to replace both hoses and both screws.
Beside the battery you'll see a large black box with words stating "remove this to service air breather". The air filter is not IN this box, but you have to remove it to get to what the air filter is in. To remove this box, remove the two bolts that secure the box to the front of the vehicle, then remove the small hose that is stuck in the left side of the box. Then, there are two large, corrugated hoses that come into the back and bottom of the box; leave these hoses attached to the box, but loosen the hose clamps that secure these two hoses to the rest of the engine so that you can then remove the box with the two large hoses entirely from the vehicle. Now that the box is out of the way, look down into the hole to the right. There is a black rectangular plastic cover standing vertically; the air filter is inside this cover, also standing vertically and facing the right side of the vehicle. This plastic cover has two clips on the far side that hold it shut. Flip those two clips away from you, and the plastic cover will hinge open, with the opening away from you and toward the back of the vehicle. You can remove the plastic cover entirely if you wish; the hinged side (closest to you) is just some holes that fit over tabs in the air filter holder. Once the plastic cover is out of the way, you can see the air filter inside; pull it out and replace. Then replace cover, re-clip the clips and so on and so on.
The stock air box in a Subaru Forester contains the air filter. To reveal the air filter remove all the screws mounting it to the engine. Proceed to open the air box and replace the air filter. Reinstall the air box to the car.
remove hoses from the air box and remove the two 12 mm bolts down the drivers side of the engine then put a large flat screw driver down between the air box and inner wing and prize it out the rubber mount
Assuming it has the 4.3 engine, the air filter is located inside the air filter box. The air filter box is located in the drivers side front of the engine compartment.
under the air filter box. under the air filter box.
With most vehicles it is in the air filter box or the snorkel between the air filter box and the throttle body.
It's under the air filter box and intake hoses. Just to the left of the battery. It's about the size of a 8 oz can of peas so you can't miss it.
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