Transform your CLA45 or GLA45 AMG from factory-restricted to track-ready with the BenzUnited M133 4" Intake Upgrade Kit. Massive airflow + reduced heat soak = faster spool, more power, and that addictive AMG turbo soundtrack you've been craving. 🔥 Why This Intake Delivers Real Results +10–15 HP Gains on tuned M133 setups – proven airflow improvements for consistent boost and power delivery. 4" K&N High-Flow Cone Filter – pulls in massive CFM while staying durable and easy to service. 3D-Printed Heat-Resistant Intake Tube – lightweight polymer design keeps charge air cooler vs. stock plastic restrictions. Laser-Cut Aluminum 3-Bolt Flange – OEM+ fitment with rock-solid seal at the turbo inlet for zero leaks. Optional Airbox Extension – seals against the hood for colder, denser air – especially effective on CLA45 (verify GLA45 clearance). Insane Induction Sound – hear the turbo spool, flutter, and aggressive whoosh every time you get into it. ⚡ Performance You’ll Feel Every Drive The factory M133 intake chokes your turbo with small piping and heat-soaking plastic. This kit fixes that – flow-tested to crush OEM restrictions. Quicker turbo spool & reduced lag – sharper throttle response off the line. Lower intake air temps (IATs) – more consistent power, especially in hot traffic or track sessions. Better cruise efficiency + supports big builds (downpipes, intercooler, tune, hybrid turbo → 500whp ready). Deeper, throatier AMG 2.0T soundtrack without drone. Product Specs & Fitment ▼ Filter: 4" K&N high-flow reusable cone Tube: Custom 3D-printed heat-resistant polymer Flange: Laser-cut aluminum, 3-bolt turbo inlet Fitment: Mercedes-Benz CLA45 AMG (C117, 2014–2019) & GLA45 AMG (X156, 2014–2019) with M133 2.0L Turbo Not compatible: M139 (45S models) Install: Bolt-on, no tune required (but shines with ECU tune) Airbox extension optional – check hood clearance on GLA45. Plug-and-play for daily or track use. 💡 Why M133 Owners Upgrade Stock intake = bottleneck. Heat soak kills boost stability and power. This CLA45 / GLA45 intake upgrade gives immediate airflow, cooler air, and turbo sound – the foundation for any serious M133 build. Pair it with your tune for max results. Frequently Asked Questions Do I need a tune to run this? No — it's a bolt-on and runs fine on the stock tune. The +10–15 HP figure is on tuned setups, so you'll see the most from it paired with an ECU tune. Will this fit my 45S / M139 car? No. This kit is M133 only — CLA45 AMG (C117, 2014–2019) and GLA45 AMG (X156, 2014–2019). It is not compatible with the M139 engine used in the 45S models. Check your engine code before ordering. Does the airbox extension fit a GLA45? The extension is optional and seals against the hood — it works best on the CLA45. On the GLA45 you should verify hood clearance first. Message us if you want help confirming before ordering. Does the filter need cleaning? Yes — it's a reusable K&N cone filter, so it's cleaned and re-oiled rather than replaced. Will it support a bigger build later? Yes — it's built to support downpipe, intercooler, tune, and hybrid turbo setups up to around 500 whp, so it won't need replacing as the build grows. Upgrade Your AMG Now – Email for Details & Stock BenzUnited Performance – Precision-Engineered for Mercedes AMG Boost Junkies 500whp-Ready | CLA45 & GLA45 M133 Specialists | Fast Shipping from USA
