Mazda 3, 2010 i-touring, 5sp manual sedan, 105k miles (169k km)
I changed tranny mount (large one under the battery) 2 times already. Once under the warranty at around 30 k miles and second time around 75k miles. Both times was because of annoying creaking noise and not because of any structural damage on the rubber part. Passenger side mount was replaced at 75k miles also (it was broken).
I started hearing creaking noise again on the drivers side when making sharp right turns at intersections. I have inspected both mounts and didn't notice any structural damage or leaks on passenger side mount. There is also some wheel hop when taking off and in slow traffic when in first gear. I am thinking to replace both mounts once again and would like to know if there is anything else I should look for.
Also, does anyone know tranny part number for my car?
The current one is marked as BBM4-39-070.
The problem is that there should be additional letter after 070, but it's not shown and I don't know which part to order.
I called the dealer and was told they don't see part number listed in their computer when entering VIN number (I do not believe that).

Please help.
Thank you