Phillip Dominguez
Junior Member
2012 1500 5.7L
I found these numbers on my block and was curious as to what they mean. On the passenger side there is a “12R” by the oil filter, on the driver side closer towards the front there is an “11L” on the pad sitting on top of the block there is some numbers as well (see pic) And on the back of the block there is “0631”. I did also see “Hecho en Mexico” made in Mexico but couldn’t see anything else. I don’t have any stickers on my valve covers either like I’ve read. Any one know where else there should be numbers? Reason I’m curious is because the engine was supposedly replaced with one out of a 2015. Thanks.




I found these numbers on my block and was curious as to what they mean. On the passenger side there is a “12R” by the oil filter, on the driver side closer towards the front there is an “11L” on the pad sitting on top of the block there is some numbers as well (see pic) And on the back of the block there is “0631”. I did also see “Hecho en Mexico” made in Mexico but couldn’t see anything else. I don’t have any stickers on my valve covers either like I’ve read. Any one know where else there should be numbers? Reason I’m curious is because the engine was supposedly replaced with one out of a 2015. Thanks.



