If you are looking for a specific with a similar number, it is likely LEGO Speed Champions Ford Mustang GT (Set 75871) , which includes 185 pieces and a racing driver minifigure.
To recombine these pieces into the original file, follow these steps:
Do you have of the .rar file, or is a specific part missing?
: Use a compression tool like WinRAR or 7-Zip to open only the first file in the sequence (usually ending in .part1.rar or .001 ).
Putting together a file labeled usually refers to extracting a single archive that has been split into multiple smaller "pieces" or parts.