400 BB dip stick tube

[jdscofield]

i recently had my 400 rebuilt and modified. I just went to check the oil, and the whole tube pulled right out of the block.  i stuck it back in, and it is completely loose and will not stay in.  it is not the same dip stick as what was on the engine when i sent it in.  they installed a aftermarket one.  my question is, is there some sort of rubber grommet that fits into the block where the dipstick tube inserts?  i feel that if i go and get another tube, it will do the same thing,

[c00nhunterjoe]

It should bolt to the motor mount

[fy469rtse]

What coon hunterjoe ment was the outer has an ear for one of the engine mount bolts hold it in place, if it doesn't have that it could be the wrong dipstick tube