1 7

BenzUnited Parts

aFe Magnum FLOW Air Filters for M278 | E550 / CLS550 Performance

aFe Magnum FLOW Air Filters for M278 | E550 / CLS550 Performance

$182.70 USD
$182.70 USD
Sale Sold out
Shipping calculated at checkout.

aFe Magnum FLOW OE Replacement Air Filters – Pair (Pro 5R Media)

Drop-in high-flow upgrade that gives your M278 noticeably sharper throttle and more mid-range pull — no tuning, no spacers, no hassle.

Why aFe Magnum FLOW Pro 5R Filters Crush It on the M278

✅ Massive Flow Increase
Pro 5R oiled cotton gauze flows significantly more than stock paper — the most aggressive aFe drop-in available.
✅ Pro 5R Oiled Media
Multi-layer oiled cotton traps dirt better while flowing freer. Washable & reusable for the life of the car.
✅ Perfect OEM Drop-In Fit
Exact factory dimensions + urethane seal = zero leaks, zero MAF codes, 100% stock airbox.

Real-World Results Owners Report

  • Crispier throttle response right off idle
  • Stronger and smoother mid-range pull
  • Better power consistency on hot days and back-to-back runs
  • Perfect complement to headers, downpipes, tune, or E85

“Just the filters alone made my E550 feel way more alive. Throttle is sharper and it pulls harder in the 3–5k range. Super clean install.” – Alex R., 2015 CLS550 • 512 whp

What You Get (Sold as Pair)

  • ✔ 2 × aFe Magnum FLOW OE Replacement Air Filters w/ Pro 5R Media (Left + Right)
  • ✔ Pre-oiled and ready to install
  • ✔ Installation instructions

Fits These M278 4.7L BiTurbo V8 Models

Model Chassis Years
E 550 • CLS 550 W212 / C218 2012–2016
S 550 / S 560 • CL 550 W221 • W222 • C216 • C217 • A217 2011–2017
SL 550 R231 2013–2020
GL / GLS 450 • 550 • ML / GLE 550 X166 • W166 2012–2019

✅ Always confirm M278 engine code • Message me if unsure

Drop-in install in under 5 minutes • No tools needed • Fully reversible

🔥 Add Pair to Cart – Ships Same Day

BenzUnited Parts • Mercedes Performance Specialist

View full details