K&N Apollo Universal Intake 3" Outlet Backing

thingiverse

Use this part at your own risk. This is a 3" outlet backing for K&N Apollo. I recommend only using this if your rubber factory intake is 3" or you need to use a 3" straight coupler to an aftermarket intake. I designed it with 3.5mm thick walls after several real world tests with various thicknesses for strength and durability. This means the actual inside diameter is 69mm. Printing Notes ------------------- • Print as hot as possible with the fan off or set to low for maximum strength. • You will need to use supports because of the low angle of the opening at the bottom. I found the scraping tool very effective at removing the support. Plan on doing some sanding afterwards. • You can probably get away with printing this in PETG as long as the intake isn't next to any hot engine parts, but I recommend using ASA filament since it's more tolerable to heat. You can watch the install that required this adapter at https://youtu.be/1FacRFInC7E. If you want, you can buy me a coffee at https://ko-fi.com/vampyrex13