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2007 torrent axle nut size
34m
30mm
Typically above the rear axle, or alongside the "subframe" in front of the left rear wheel, under the car. It will be the size of a 12oz soda can.
The rear wheel hub spindle nut (axle) size is 30mm. I just changed my rear wheel hubs today
36mm
36mm
You should have a 1" axle front and rear.
2004 SRX is 36mm...
The rear differential is where the driveshaft meets the axle. Its right in the middle of the axle and is about the size of a basketball.
Vehicles with front wheel drive have a straight rear axle meaning there is no gear housing in the rear axle. Vehicles that are rear wheel drive have a gear box in the middle of the rear axle to change the rotation of a drive shaft to turn the rear axle. If you look under a full size pick up truck rear axle you will see a large gear box (typically referred to as a pumpkin) in the middle area of the axle. That is the gear box differential.
30