- Color: Silver
- Brand: Spectre
- Installation Type: Bolt-On
- Part of a complete system of products that will allow you to create an intake for almost any application
- Polished aluminum body with ABS components
- Air intake tube, straight piece
- Grade 6063 polished aluminum




Lava Lamps –
UPDATE: Downgraded review from 5 to 3 stars: while torquing an HPS T-bolt clamp to 60 inch/lbs, the walls of the tube deformed.Works okay for the intake air-filter mod on a 7.3 Powerstroke… snug fit inside the rubber intake boot (where it connects to original air-box). Fits more loosely in the 6637 style filters (Donaldson B085011), but this is remedied with a 4″ T-bolt clamp typically used on CAC, intercoolers, etc.However, do NOT buy the Spectre T-bolt clamp, it is an inferior design. Instead, get the HPS (brand) T-bolt clamp, it has a rolled ‘lip’ to keep the ends/edges of the band aligned under the bolt.
jason –
This was great for installing my new 6637 filter in my F250 7.3. This size of pipe was very hard to find locally, so this was great to find on Amazon. It came in just the right size for what I needed. It is about 4″ long so I didn’t have to cut or anything. Just install.The finish is also very nice. It has a nice polished shine and looks great under my hood.
Amazon Customer –
nice looking. connects the air filter with the intake
Amazon Customer –
Perfect fit with NAPA Gold filter. Ford 7.3
michael miller –
Used to add a 6637 napa filter to a 7.3.
Amazon Customer –
This 4″ coupler is required on the WIX 46637 (Napa 6637) conversion from the factory air box on a 7.3L. You can also use a 4″ PVC adapter, or even a piece of exhaust pipe. Amazon had this for cheap so I went ahead and ordered it. It works as needed and saved me a trip to the hardware store.
Paeton –
I used this to attach a 6637 air filter to my early 1999 7.3 Powerstroke. Did the job well.
Brent Messina –
Worked well for connecting the 90 deg boot to the throttle body