If I were on the graduate admissions committee and saw a strong application my answer to
Do you think that this grade can influence my graduate admission chances?
would be "probably not,?not".
For someone else the answer might be "yes" but the real question is not "whether?" but "how much?". That no one can say. It depends on too many other factors.
So go ahead and write the best application you can. Whether you fail or succeed probably won't depend on this single factor.