Description
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Unlock the full performance potential of your BMW with the German Car Accessories (GCA) Performance B58 Downpipe, engineered specifically for the 2015-2019 BMW 340i and 440i F30/F31/F32/F33/F36 models equipped with the 3.0L Turbocharged B58 inline-six engine.
Designed by German Car Accessories, also known as GCA, under our GCA Performance product line, this high-flow downpipe replaces the restrictive factory unit to dramatically improve exhaust flow directly from the turbocharger. By reducing exhaust back pressure, it allows the turbocharger to spool more efficiently, resulting in sharper throttle response, stronger mid-range acceleration, and increased horsepower and torque potential—especially when paired with ECU tuning and other performance upgrades.
Manufactured from high-quality T304 stainless steel, this downpipe is built to withstand extreme exhaust temperatures while providing exceptional corrosion resistance and long-term durability. Smooth mandrel-bent tubing maximizes exhaust flow, while precision TIG welds ensure superior strength, reliability, and OEM-quality fitment.
Whether you're looking for increased performance, faster turbo response, a more aggressive exhaust note, or preparing your B58 for additional modifications, this downpipe is one of the most effective bolt-on upgrades available.
Designed as a direct bolt-on replacement, it installs using factory mounting points without permanent modifications. The fully reversible design allows you to return your BMW to its factory configuration at any time.
Every German Car Accessories performance product is backed by our 1-Year Warranty for added confidence and peace of mind.
Fitment:
2015-2019 BMW 340i Sedan (F30)
2015-2019 BMW 340i xDrive Sedan (F30)
2015-2019 BMW 340i Touring (F31)
2015-2019 BMW 340i xDrive Touring (F31)
2015-2019 BMW 440i Coupe (F32)
2015-2019 BMW 440i xDrive Coupe (F32)
2015-2019 BMW 440i Convertible (F33)
2015-2019 BMW 440i xDrive Convertible (F33)
2015-2019 BMW 440i Gran Coupe (F36)
2015-2019 BMW 440i xDrive Gran Coupe (F36)
Engine Compatibility:
3.0L Turbocharged B58 Inline-6 Engine
Key Features:
- Specifically engineered for BMW F30/F31/F32/F33/F36 B58 models
- High-flow performance downpipe improves exhaust flow
- Reduces exhaust back pressure for improved turbocharger efficiency
- Helps increase horsepower and torque potential
- Improves turbo spool and throttle response
- Produces a deeper and more aggressive exhaust note
- Manufactured from high-quality T304 stainless steel
- Smooth mandrel-bent tubing for optimized exhaust flow
- Precision TIG welds for superior strength and durability
- Corrosion-resistant construction for long-term reliability
- Lightweight performance design
- Direct bolt-on installation
- 100% reversible—return to factory configuration at any time
- Includes all necessary mounting hardware
- Backed by the German Car Accessories 1-Year Warranty
Upgrade your BMW 340i or 440i with the GCA Performance B58 Downpipe and experience improved turbo response, greater exhaust flow, increased horsepower and torque potential, and a more exhilarating driving experience from your B58-powered BMW.
