• Activated carbon cabin air filter for Smart Fortwo 451 – product photo 1
  • Activated carbon cabin air filter for Smart Fortwo 451 – product photo 2
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Filters & Maintenance

Smart Fortwo 451 Carbon Cabin Air Filter (2008–2015)

Smart Fortwo 451 Carbon Cabin Air Filter (2008–2015)

4.8 · 10 reviews
$40.50
$40.50
Sale Sold out
Shipping calculated at checkout.
Fits
Smart 451

Not sure it fits? Ask in chat with your year and trim for an instant answer.

  • Cabin (pollen) filter for the Smart Fortwo 451
  • Activated carbon layer helps cut odors and gases
  • Filters dust, pollen and pollutants
  • Direct-fit replacement, no modification
10% off Part of the Smart 451 Full Send Kit

Goes with this

View full details

Details & specs

Overview

The trail dust stays outside. This activated-carbon cabin filter keeps the air inside your Smart Fortwo 451 cleaner on the freeway and on the dirt road home.

Why it's worth it

  • Filters dust, pollen, odors and pollutants from incoming air
  • Activated carbon layer helps reduce harmful gases and allergens
  • Supports clean airflow for HVAC efficiency
  • Helps protect cabin components for better long-term life
  • Keeps the interior fresher on daily drives, long trips and off-road days

Fitment

Fits all Smart Fortwo 451 models, 2008–2015.

Install

Direct-fit replacement for the factory cabin filter. No fuss, no modification.

Details

A cabin (pollen) filter with an activated carbon layer, made for all 451 Fortwo models. A fresh filter also helps your HVAC system move air the way it should. Pair it with our engine air filter for a complete filter service.

Specs
FitmentSmart Fortwo 451 (2008–2015), all models
TypeCabin (pollen) filter, activated carbon
InstallDirect-fit replacement
Install

Direct-fit replacement for the factory cabin filter. No modification needed.

Prefer a pro? Any trusted mechanic or collision shop can install it. Ask for our shop write-up through our contact form.

Shipping & returns

Free shipping in the lower 48. Same-day shipping on select items ordered by 1 pm PT, Mon–Fri, from Elk Grove, CA or Beaverton, OR.

1-year warranty on parts we make. 30 days on everything else. 30-day returns (20% restocking fee), and nothing is final sale.

Full shipping & returns policy

  • 5 stars: 8 (80%)
  • 4 stars: 2 (20%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
B
Brittany T.
Easy Maintenance Item

Simple upgrade that makes driving more pleasant. Install was easy and the carbon filter definitely improves air quality.

Big thanks from all of us here! Enjoy the Cabin Air Filter. Can't wait to see pictures!

C
Courtney W.
Quick Install

Took less than 5 minutes to install. Perfect fit and works exactly as expected. Air inside the car feels much cleaner.

You rock, Courtney! Keep tearing it up out there. Tag us @littlebigsupply on IG! Have a great day!

K
Kevin T.
Good Quality Filter

The construction looks great and the carbon layer is a nice touch. Fits perfectly in my Fortwo and works well.

Appreciate the kind words, Kevin. Full Send! Find us on IG @littlebigsupply and show off that rig.

E
Elizabeth B.
Eliminates Outside Odors

Big improvement when sitting in traffic. Much less exhaust smell making it into the cabin now.

Glad the Cabin Air Filter met your expectations! Share a pic on Instagram and tag @littlebigsupply! Drive safe!

A
Alyssa S.
Great Value

Solid quality filter for the price. The activated carbon really helps reduce smells when driving behind trucks.

Appreciate the kind words, Alyssa. Full Send! Find us on IG @littlebigsupply and show off that rig. Drive safe!

J
Jessica J.
Perfect Fit

Dropped right into my Smart Fortwo without any trimming or hassle. Airflow is great and the cabin smells fresh again.

Thanks Jessica! Glad to hear the Smart Fortwo Cabin Air Filter (Carbon, 451) (2008-2015) is performing well for you.

S
Scott W.
Fresh Cabin Again

My old filter was overdue for replacement. After installing this one the cabin air feels fresh and clean again.

So glad you're loving the new Cabin Air Filter! Be sure to tag us on Instagram @littlebigsupply. Stay awesome.

J
Justin T.
Great Upgrade Over Stock

This carbon filter is a big improvement over the factory one. Helps with exhaust smells in traffic and was very easy to swap in.

Thanks for the awesome review, Justin! - Jeff Have a great day!

A
Amy A.
Noticeably Cleaner Air

Installed this in my Smart Fortwo and the difference was immediate. The air smells cleaner and it handles outside odors way better than the old filter.

Thanks Amy! Glad to hear the Smart Fortwo Cabin Air Filter (Carbon, 451) (2008-2015) is performing well for you. Keep it up!

A
Amy W.
Helps With City Driving

Driving in traffic used to bring in a lot of outside odors. This carbon filter makes a noticeable difference. Definitely worth it.

Thanks Amy! Glad to hear the Smart Fortwo Cabin Air Filter (Carbon, 451) (2008-2015) is performing well for you. Stay awesome.

Complete the build

Building a Smart 451?

Our flagship 3" bolt-on lift for the 451 Fortwo (Pure, Passion and Brabus). No cutting, no welding, factory mounts, color printed instructions.

Build your kitShop Smart 451 parts