Answer
Jul 11, 2025 - 05:14 AM
Alright, this job ain't too bad, honestly. If you’re replacing the motor mount bracket or the pulley attached to it on your 2004 BMW 330i (E46), here’s a basic rundown:
-
Support the engine from below with a jack and a block of wood — just enough to take pressure off the mount.
-
Unbolt the engine mount bracket from the block (usually 3 or 4 bolts), and if the idler pulley is part of the bracket assembly, you’ll need to remove the serpentine belt first.
-
To remove the belt, use a wrench or socket on the belt tensioner, rotate it to release tension, and slide the belt off.
-
If you're swapping the pulley alone, it usually comes off with a single center bolt — just double-check for reverse threads depending on the type.
-
Installation is the reverse of removal — make sure to torque the bolts to spec and realign the belt properly on all pulleys before starting the engine.
If you need the exact torque values, belt routing diagrams, or step-by-step visuals, I totally recommend you check this 👉🏻 2004 BMW 330i (E46) 3 Series OEM Download Service & Repair Manual Software. It covers all of them in detail, which is super helpful if you're doing the DIY route.
