Engine compartment (Audi A4 B5)

1 - battery;
2 - throttle cable;
3 - brake booster;
4 - expansion tank with brake fluid;
5 - expansion tank with coolant;
6 - electronic unit;
7 - reservoir with hydraulic oil for servo control;
8 - windshield washer fluid reservoir; 9 - hydraulic module of the anti-lock system;
10 - oil level dipstick;
11 - generator;
12 - Engine cover;
13 - oil filler pipe (motor oil);
14 - toothed belt cover;
15 - fresh air flow meter;
16 - Air filter housing;
17 - electromagnetic valve of the container with a carbon filter (fuel tank ventilation).

1 - battery;
2 - throttle cable;
3 - brake booster;
4 - expansion tank with brake fluid;
5 - expansion unit with coolant;
6 - electronic unit;
7 - windshield washer fluid reservoir;
8 - Hydraulic oil reservoir for servo control;
9 - hydraulic module of the anti-lock system;
10 - generator;
11 - oil level dipstick;
12 - oil filler pipe (motor oil);
13 - Engine cover;
14 - fresh air flow meter;
15 - Air filter housing;
16 - electromagnetic valve of the container with a carbon filter (fuel tank ventilation).

1 - battery;
2 - brake booster;
3 - expansion tank with brake fluid;
4 - expansion tank with coolant;
5 - electronic box;
6 - windshield washer fluid reservoir;
7 - reservoir with hydraulic oil for servo control;
8 - hydraulic module of the anti-lock system;
9 - throttle control unit;
10 - oil level dipstick;
11 - throttle cable;
12 - oil filler pipe (motor oil);
13 - Engine cover;
14 - ignition power output stage (underneath is the air filter housing with an integrated fresh air flow meter);
15 - carbon filter electromagnetic valve (fuel tank ventilation).

1 - carbon filter electromagnetic valve (fuel tank ventilation);
2 - battery;
3 - electromagnetic valve for switching the register suction pipeline;
4 - brake booster;
5 - expansion tank with brake fluid;
6 - expansion tank with coolant;
7 - electronic box;
8 - Hydraulic oil reservoir for servo control;
9 - windshield washer fluid reservoir;
10 - hydraulic module of the anti-lock system;
11 - vacuum box of the speed control system;
12 - Switchable intake manifold;
13 - Ignition coil pack;
14 - fuel pressure regulator;
15 - oil filler pipe (motor oil);
16 - fresh air flow meter (built-in only in engines with a working volume of 2.8 l);
17 - ignition system power output stage (underneath is the air filter housing).