BorgWarner Turbocharger SX K04 Audi RS4 Upgrade (Left)

BorgWarner is a global leader in powertrain technology, producing turbochargers, transmission components, and drivetrain parts trusted by OEM manufacturers and performance builders alike. Their EFR and KKK turbocharger lines are popular for high-output engine builds. Popular BorgWarner ProductsBrowse the full BorgWarner catalog to find the right upgrade for your application. Every product ships fast with fitment verified against manufacturer specifications. What BorgWarner products are available for performance builds?BorgWarner's EFR turbocharger series is widely used for performance engine builds, offering integrated wastegates and high-efficiency compressor maps for gasoline and diesel applications. Their transmission components are also used in performance automatic builds. Are BorgWarner turbochargers direct-fit?BorgWarner turbochargers are available in both direct OEM-replacement configurations and universal performance units. OEM-replacement turbos bolt directly to factory ex...

Forced induction systems encompass every method of pushing air into an engine at greater than atmospheric pressure, including turbochargers driven by exhaust energy, superchargers driven mechanically by the crankshaft, and prochargers using centrifugal designs belt-driven at higher ratios than traditional roots-type blowers, with each approach delivering a significant increase in air mass per cylinder fill that allows proportionally more fuel to be burned and more power to be produced without increasing engine displacement. Adding 10 PSI of boost pressure to a naturally aspirated engine can increase power output by 50 to 70 percent depending on the engine's breathing efficiency and the quality of the supporting hardware, making forced induction the most power-dense modification available relative to cost and complexity. This collection covers complete forced induction systems, turbocharger and supercharger hardware, intercoolers, blow-off valves, wastegates, and supporting component...

Turbochargers use exhaust gas energy to spin a turbine wheel that drives a compressor wheel on a shared shaft, compressing intake air above atmospheric pressure and forcing a denser charge into the engine's cylinders. More air allows more fuel to be burned per cycle, producing substantially more power and torque from the same engine displacement. Popular Turbocharger Options Popular replacement and upgrade turbochargers include drop-in OEM-equivalent units for restoring factory performance after turbocharger failure, bolt-on upgraded turbochargers sized for 20 to 40 percent power gains on stock internals, and large-frame high-output turbochargers for built engine applications targeting 600 horsepower and above. Leading turbocharger brands include Garrett, Borg Warner, IHI, Mitsubishi, Holset, and Precision Turbo, each offering a range of frame sizes and bearing configurations for different applications. How do I choose the right size turbocharger? Turbocharger sizing is determined b...

Shop Turbochargers & Components by Brand, Vehicle, and Performance Goal Browse premium turbochargers and turbo components at Black Ops Auto Works, including turbo kits, super core assemblies, turbo actuators, turbo blankets, turbo cartridges, turbo install kits, turbo service kits, turbo compressor covers, turbo inlets, turbo upgrade components, and turbine housings. Whether you are upgrading a street car, diesel truck, race build, or performance daily driver, this collection brings together the parts you need to improve boost response, airflow, horsepower, and reliability. We carry leading performance brands in the turbo category, including Garrett, BorgWarner, Turbosmart, aFe, Cobb, ATS Diesel, BD Diesel, Fleece Performance, Wehrli, HKS, and K&N, helping you shop trusted names for everything from complete turbocharger systems to supporting hardware and replacement components. Turbochargers, Turbo Kits, and Essential Components This collection is built for customers search...