Pay in 4 interest-free payments of $27.38 Learn more
Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
The JB4 features a simple plug & play installation harness for easy installation & removal and includes many features not found with any other tune
While box and filter enlargement and redesign are major factors in ultimately producing a more potent intake they are not the only variables in creating a more efficient design either
so be sure they are perfected down to every detail
Some photos show our upcoming optional turbo inlets available separately
BMS Oil Catch Can for G Chassis Gen 3 2025+ B58 BMW M340 M440 Can Base:Billet aluminum can base with 1/8" NPT bung The JB4 features a simpleKeep Oil Out of your Gen 3 B58 BMW Air Intake System! It's no secret that B58 BMW turbo motors can suffer from oil control problems causing the oil to blow through and coat the intercooler and charge piping, gunking up intake valves and the VANOS system, lowering the effective octane, and generally degrading engine performance. The higher your boost levels and the higher the milage the more apparent these problems become. The solution to this problem
