RENNtech Carbon Fiber Airbox | M177 | 4.0L V8 BiTurbo Finish:Gloss 0L V8 BiTurbo) Modified Performance

0L V8 BiTurbo) Modified Performance (at crank):

RENNtech Pre-Preg Carbon Fiber Rear Decklid Spoiler | C257 - CLS Coupe | Gloss Finish

Easy installation

Crank Performance Numbers are calculated with a 16% Drivetrain loss on 4MATIC+ vehicles

Please note:  Our airbox for the M157 will require modification to the OEM engine cover

RENNtech Carbon Fiber Airbox | M177 | 4.0L V8 BiTurbo Finish:Gloss 0L V8 BiTurbo) Modified PerformancePerformance testing shows that the OEM air boxes on the M177 V8 Bi Turbo engine become a constraint when power output is increased through performance ECU software, exhaust, and turbo upgrades. RENNtech M177 Carbon Fiber Airboxes solve this problem through increased volume and airflow. Substantially larger than stock and a symmetrical design that delivers over 30% more filter area allows the engine to perform at the highest level in both stock and