{"product_id":"3-46-final-drive-differential","title":"3.46 Final Drive Differential","description":"The BMW 33-10-7-531-625 is a complete, fully-built exchange final drive with a 3.46 gear ratio, designed as a direct replacement for original BMW parts. This unit was factory-equipped on many E46 and Z4 models with automatic transmissions, providing a shorter gear ratio compared to the 2.93 or 3.07 ratios found on manual transmission cars. This shorter ratio effectively places the vehicle in a better part of the RPM band for any given speed, resulting in quicker acceleration, more responsive power delivery, and a feeling of increased torque. The primary trade-off for this performance enhancement is a slight decrease in fuel economy due to higher engine RPM at cruising speeds.\n\nThis is a genuine Original BMW part, ensuring it meets the same high standards of quality, precision, and functionality as the vehicle it's intended for. As such, it comes with the same BMW two-year warranty offered on new parts, providing peace of mind over used alternatives. Installation is straightforward, though some E46 and Z4 models may require changing output flanges to match the existing differential setup. The part directly replaces BMW part numbers 33101428343, 33101428344, and 33107531624.\n\nThis differential is specified to fit the following BMW models: 1999-2006 E46 BMW 323i, 323ci, 325i, 325ci, 325xi, 328i, 328ci, 330i, 330ci, 330xi (with manual transmission), and 2003-2008 E85 BMW Z4 2.5i, Z4 3.0i, Z4 3.0si (with manual transmission). It's important to note that while the product title indicates it's for E46 and Z4 models, some sources state \"no application\/vehicle fitment information available\" or that the part is \"NO LONGER AVAILABLE.\" Buyers should verify fitment carefully with the seller before purchase.","brand":"BMW","offers":[{"title":"Default Title","offer_id":52687181939000,"sku":"33-10-7-531-625","price":2058.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660187942.jpg?v=1784881136","url":"https:\/\/store.motormia.co\/products\/3-46-final-drive-differential","provider":"MOTORMIA","version":"1.0","type":"link"}