There's two things you can try. First, go to the Rock Auto web site and look up various parts for your car model and some of the Renault products to see if anything related to the transmission is the same. Next, if your salvage yards work the same way as they do here in the U.S, they will have books that list each part on a car, and all the applications that part fits. We call them "Hollander Guides". That company publishes a number of interchange guides every year, and they're very expensive. They may go by a different name by you, or a different company might produce them.
I only looked up two Renault products, and I looked up the clutch plates, which were vastly different. You didn't say if you have a manual or automatic transmission. A lot of people in European countries call automatic transmissions "gear boxes", but we don't here.
I can understand having a Renault transmission in your car, but I'm pretty sure it's still a Japanese car. I'm very familiar with Chrysler products, and they have a number of car models that are built by Mitsubishi in the United States, but it's still a Japanese-based company. The domestic models use a real lot of import parts too like AC compressors and generators. The thing is, a Mitsubishi generator from a domestic Chrysler car will not fit on a Mitsubishi car made for Chrysler. Internally they might be the same, but the size, mounting, and electrical connections will be totally different.
Also, since this is related, Chrysler used to build a really tough and reliable automatic transmission in the '70s and '80s, and they built them for the now-defunct American Motors. 100 percent of the internal parts were identical between both of them, but the housing was totally different. For that reason, the assemblies would not interchange even though everything else was the same. My guess is you're going to run into the same thing. One manufacturer will build their car the way they designed it, then when there is a reason to out-source a part, they have that part built to fit their product. They don't look for what is already being used on someone else's car, then change their car design so they can use it too.
I am very doubtful you're going to find a Renault transmission that will fit your car but I hope I'm wrong. Visit a salvage yard, then let me know what you find.
Monday, December 2nd, 2013 AT 11:39 PM