BMW E46 Rear Subframe Failures. As advanced and solid as the E46 feels it has a major weakness in the rear suspension: the subframe rips away from the chassis. The subframe is bolted to the chassis at four points under the trunk floor. The attachment points where it gets bolted are spot welded to the sheet metal of the floor.
It is about 15 hours to remove and replace motor complete, plus an extra couple hours to swap bearings. So roughly equates to $1700 on average lab rate. It can be done in the car easily inside of 8 hours, so $800. If you are being quoted any more than either of these routes I would shop elsewhere.
2000 323i subframe tearing. Hey guys! New to the forum actually just made an account for this post. I realize this has probably been gone over a million times but I wanted to get a second opinion on this topic. basically long story short my younger brother just bought a alpine 2000 323i 5spd. did coilover install, style 5’s and a few other thing. Powerflex Urethane Rear Subframe Inserts - BMW E46 non-M, E83 X3 (Street Set) Genuine BMW M3 subframe mounts for replacement or upgrade. Price: $719.00. 894.00.

It is essential to fit the repair screws M12x1.5x115 with washers 37x2.5 (part number: 31 33 6 776 760)." I still had to lower the driverside even more because one of the front diff bracket bolts is blocked by the fuel tank. The repair bolts arent necessary but it helped suspend the subframe. Post 10 for diff bushing removal.

E46 Forums . E46 General. Subframe repair complete! Subframe repair complete! Sweet! Jump to Latest Follow last post by 2003 bmw m3

These eliminate the need for the eccentric bolt that BMW uses for the camber adjustment in the rear of the car. The new arms are adjustable, making up for the lack of eccentric bolt. The Eibach arms cost roughly $200. In total, the upgraded parts cost roughly $580. Parts required to overhaul a BMW E46 M3 rear subframe: Eibach Rear Camber Arms
SMG to Manual Swaps - E46 M3 Subframe Repairs - LSD Diff Upgrades. We specialise in modifications that add power and reliability to the E46 M3. While many of our projects are one-of-a-kind, we also provide some more common modifications. The Brintech difference is quality engineering, and masterful fabrication. This kit applies to all BMW E46 cars, including the M3. The E46 Rear Subframe/Chassis Reinforcement Kit consists of 4 main subframe mounting point reinforcements, spacers to realign the cross member, hardware, and plates to cover the access panels in the trunk. Welding is required. Fits all E46 models, including M3. 20ed.
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    • bmw e46 subframe repair cost