This Fits Your 2008 Volvo S40
Full size assembly image of Active on demand coupling, aoc (1/6)
Active on demand coupling, aoc (1/6) Active on demand coupling, aoc (2/6) Active on demand coupling, aoc (3/6) Active on demand coupling, aoc (4/6) Active on demand coupling, aoc (5/6) Active on demand coupling, aoc (6/6)

Active on demand coupling, aoc

Transmission: M66 AWD
Manual gearbox. Active On demand Coupling, AOC.