Roger,
Congrats on getting that starter motor sorted out. As for the parts number many manufacturers add a letter or - number to the part number when they make a change in the design or supplier. In the business world it is called a "superseded" number. Most times it is because the product line that part was first used on has been stopped or changed for whatever reason. Many times the part is the same as before but the number has the letter behind it. I have seen parts with -G, H, I ect behind them. You might contact the seller of that part to see if they can shed more light on it for you.
Tom
Congrats on getting that starter motor sorted out. As for the parts number many manufacturers add a letter or - number to the part number when they make a change in the design or supplier. In the business world it is called a "superseded" number. Most times it is because the product line that part was first used on has been stopped or changed for whatever reason. Many times the part is the same as before but the number has the letter behind it. I have seen parts with -G, H, I ect behind them. You might contact the seller of that part to see if they can shed more light on it for you.
Tom