• Image of (L33) Stillen 16-17 Nissan Altima Rear Diffuser (All trim)

Personalize your ride with a STILLEN rear diffuser! We've been manufacturing polyurethane body styling parts for over 30 years. We’re the experts when it comes to designing, building and installing high quality aerodynamic and styling performance parts. STILLEN body styling parts are designed and tested to ensure exact fit prior to production. Our proprietary polyurethane formula is so strong and resilient that we offer a limited lifetime warranty on materials.

Our rear diffuser is available either unpainted or painted matte black. The painted version arrives ready to install, or the unpainted version can be painted to the color of your choice

In our experience, when it comes to installing STILLEN polyurethane (or any other brand) of car and truck ground effects, splitters, diffusers, roof spoilers, wings, side skirts, front fascias and other body styling parts, proper preparation and careful installation makes all the difference. Spending a few minutes to watch our installation video and carefully reading installation instructions will pay off by protecting your ground effects from falling off due to improper installation. If you have ANY doubts about your ability to install a STILLEN body styling part, we recommend you have a reputable body shop install your parts for you. HOWEVER, we strongly recommend you insist that the shop follow STILLEN instructions to the letter and use 3M adhesive prep and Wurth Clean Prep Solution. Last but not least, where applicable, it is essential to use the included self-tapping screws to securely affix your STILLEN body styling part to your vehicle.

Part Comes Pre-Installed with 3M Automotive Tape (Same as OEM uses)
No Cutting or Modification to Bumper - Removable
Painted Matte Black - Ready for Direct Installation
Polyurethane Construction
Limited Lifetime Warranty


  • 88 in stock