BenzUnited Parts
K&N 33-5032 High-Flow Air Filters – Mercedes M276 3.0L V6 | C43 AMG, E43, GLC43, E450, E400, C450, C400 (Set of 2)
K&N 33-5032 High-Flow Air Filters – Mercedes M276 3.0L V6 | C43 AMG, E43, GLC43, E450, E400, C450, C400 (Set of 2)
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The K&N 33-5032 is a pair of high-flow, washable panel air filters for the Mercedes M276 DE30 LA 3.0L V6 BiTurbo — C43 AMG, E43, GLC43, E450, E400, C450 and every other model running this engine. This listing includes both filters, because the M276 uses two filter housings and a complete change needs both. Oiled cotton gauze media, made in the United States, drops straight into the factory housings in about ten minutes with no tuning and no modification.
What You Get
| Part Number | K&N 33-5032 |
| Quantity Included | 2 filters (left and right) — one complete vehicle set |
| Filter Media | Oiled cotton gauze, pre-oiled |
| Panel Size (each) | 9.25 × 7.375 × 1.125 in (235 × 187 × 29 mm) |
| Tune Required | No |
| Install | Drop-in, 5–10 minutes, Torx driver required |
| Reusable | Yes — washable and re-oilable |
| Made In | United States |
| Ships | 5–6 business days |
Cold Air Intakes Aren't Pulling Cold Air
Ironically, "cold air intakes" use open cone filters, exposing them to hot air from the engine bay. When IATs rise, the ECU then pulls timing, reducing power when you are driving hard or doing repeated pulls.
The factory Mercedes airbox already channels cold air from the outside. Sealed, ducted to the grille. The paper panel inside is the only real restriction, and that is what these performance air filters replace.
Fitment — M276 DE30 LA 3.0L V6 BiTurbo
| Model | Chassis | Years |
|---|---|---|
| C400 4MATIC | W205 | 2015–2021 |
| C450 AMG 4MATIC | W205 | 2015–2017 |
| C43 AMG — Sedan / Wagon | W205 / S205 | 2016–2021 |
| C43 AMG — Coupé / Cabriolet | C205 / A205 | 2017–2023 |
| CLS400 / CLS400 4MATIC | C218 / W218 | 2014–2017 |
| E400 / E400 4MATIC | W212 | 2013–2014 |
| E400 Coupé / Cabriolet | C207 / A207 | 2013–2017 |
| E400 4MATIC | W213 | 2016–2018 |
| E43 AMG 4MATIC | W213 | 2016–2018 |
| E450 4MATIC | W213 | 2019–2020 |
| GLC43 AMG — SUV / Coupé | X253 / C253 | 2015–2022 |
| GL400 / GLS450 4MATIC | X166 | 2014–2019 |
| ML400 / GLE400 4MATIC | W166 | 2015–2017 |
| GLE43 AMG 4MATIC | W166 / C292 | 2015–2019 |
| GLE450 AMG 4MATIC | W166 / C292 | 2016–2017 |
| GLE550e 4MATIC | W166 | 2016–2018 |
| S400 / S400 4MATIC | W222 | 2014–2020 |
| S450 4MATIC | W222 | 2018–2020 |
| S550e (S500 Plug-In Hybrid) | W222 | 2014–2017 |
| S560e | W222 | 2018–2020 |
| SL400 | R231 | 2014–2020 |
| SL450 | R231 | 2017–2020 |
| SLC43 AMG | R172 | 2016–2020 |
Install & Maintenance
Lift the engine cover off and flip it over. Undo the Torx screws, pull off the bottom of each housing, swap the filters, and put it all back together. No cutting, no wiring, no tuning.
Clean with a K&N filter care kit, rinsing from the clean side outward. Air dry at room temperature — no compressed air or heat — then re-oil lightly. Over-oiling is what contaminates a MAF sensor.
Warranty, Shipping & Returns
- Warranty: K&N "No-Hassle" Lifetime Limited Warranty against defects in materials and workmanship.
- Shipping: Ships in 5–6 business days.
- Returns: 30-day returns on unused items in original packaging.
Questions
How many filters does my car need?
Two. The M276 uses two filter housings, one per bank. This listing ships both, so you are not hunting for a second panel after the box arrives.
Do I need a tune to run these?
No. These are direct replacements for the factory panels and work on a completely stock car. A tune is where the real power is, but it is not a requirement for fitting these.
Will the filter oil damage my MAF sensor?
Not when the filters are oiled correctly. They ship pre-oiled at the right level and need nothing before install. MAF problems come from over-oiling after a cleaning — apply lightly, let it wick in, and do not saturate. If you would rather avoid oil entirely, a dry synthetic filter is the alternative.
Is a cold air intake better than this?
On the M276, no. The factory box is already sealed and ducted to outside air, so the paper panel is the restriction rather than the box. An open cone gains a little peak flow and gives up intake temperature, which is the wrong trade on a turbocharged engine. A full intake kit earns its place once you are chasing airflow beyond what the factory box supports.
How often do they need cleaning?
K&N publishes a service interval of roughly 50,000 miles under normal highway driving. Clean them when visibly loaded; dusty conditions shorten that considerably.
Do these fit the factory airbox without modification?
Yes. They are OEM-shape panel filters. Nothing is cut, drilled, relocated or removed, and the factory heat shielding stays exactly as it is.
