BMC Performance Air Filter Pair – Mercedes AMG M113K | E55, CLS55, SL55, S55, CL55, G55
A direct-fit pair of BMC performance air filters for the supercharged M113K 5.4L V8. Drops straight into the factory AMG airbox — no modifications, no tuning required. Sold as a pair. The M113K uses two filter elements — one per side. This listing covers both, so you replace the set in one go. Free US shipping — no minimum, no surprise at checkout. 30-day returns. Why Upgrade the Filters Higher flow than a paper element — less restriction on the intake side, where the M113K is already working hard Direct OE replacement — fits the factory AMG airbox exactly, no adapter needed Reusable — cleanable and re-oilable rather than a consumable you replace every service No tune required — runs on the stock calibration exactly as it did before Add the intake filter spacer kit (+$150) using the selector above. The spacers raise the filters into a higher-flow region of the airbox, reducing restriction at the filter seal — worth up to +10 WHP on its own, and it bolts on with the filters in the same job. Part Numbers 1130940004 113-094-00-04 A1130940004 Vehicle Compatibility – M113K 5.4L Supercharged Model Chassis Years E55 AMG W211 2003–2006 CLS55 AMG W219 2005–2006 SL55 AMG R230 2003–2008 S55 AMG W220 2003–2006 CL55 AMG W215 2003–2006 G55 AMG W463 2005–2008 Not sure which element your car uses? Send us your VIN and we'll confirm before you order. Frequently Asked Questions Is this one filter or two? Two. The M113K V8 runs a filter element on each side of the airbox, and this listing is for the pair. You're not ordering half a set. What does the spacer kit add? The M113K airbox chokes where the filter seals against the lid, and that restriction gets worse under boost. The spacers lift the filters into a smoother airflow path, cutting turbulence so the filters can actually do their job. Direct bolt-on, no cutting, fully reversible, and no tune needed. Will these throw a check engine light? No. They're a direct OE-dimension replacement sitting in the factory housing — nothing changes upstream of the MAF. How hard is the install? Straightforward. Open the airbox, lift out the old elements, drop the new ones in. No tools beyond what's needed to open the housing, and no cutting or modification. Add the spacers and it's about 20–30 minutes total. Does this fit the naturally aspirated M113? This element is the AMG-specification filter for the supercharged M113K 55 models listed above. Non-AMG V8s often use a different element — send us your VIN and we'll check. Questions about fitment? Send us your VIN and we'll confirm before you order.