S15 HLSD Diff question, yes I've searched.

[S14DB]

Originally Posted by soreballz

Its a piece that goes between the gears to lock them together. It does the same thing a welded diff does, but for a different price. lol

Spool replaces the Center Diff all together. Swap the ring gear and bearings like any other diff swap.

Mini-Spool. Replaces the gears with a sold piece. Pull the pins. Drop the gears out. install the mini. reinstall the pins. Easier, but you can still break the pins.