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Emissions System

Is your BMW throwing emissions related codes? While we're primarily a BMW performance parts house, we understand the importance of maintaining your emissions system to pass inspection in your area and keep your check engine light off. Pick up your emissions related parts from Turner Motorsport.

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VTT B58/S58 Cylinder Head Port Block-Off Kit - BMW B58 Gen1/2/3 (B58/B58TU/B58TU2) & S58 3.0L
VTT B58/S58 Cylinder Head Port Block-Off Kit - BMW B58 Gen1/2/3 (B58/...
Vargas Turbo Technologies - Corporate Logo
T#:49822557
Part#: VTTBS58BLOCK
Ships on Aug 6, 2026
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$ 29.99 USD
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The VTT B58/S58 Head Port Block-Off kit is designed to either seal off the factory head ports used by the OEM low-side PCV system. These ports in the cylinder head utilize engine vacuum to evacuate crankcase gases, but in the process, can allow oil to enter the intake manifold, leading to valve carbon buildup and other performance issues over time. The Block-Off kit offered by VTT completely seals the factory head ports to prevent oil intrusion and unwanted vacuum leaks. This kit does NOT require any tapping, meaning no metal to get into the engine, etc. You simply tap the plugs into place. Key Features Eliminates oil draw-through into the intake manifold Prevents carbon buildup on intake valves Utilizes precision-machined plugs for boost sealing Fully reversible — Block-offs can be removed if needed No tapping is required. Easy install, by tapping the blocks into place.
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Performance Oil Separator Kit - M52/S52
Performance Oil Separator Kit - M52/S52
Packaged by Turner - Corporate Logo
T#:51356040
Part#: 059015LA02KT2KT
Ships on Oct 5, 2026
New Item
Sale - Save 19% $ 104.99

This product was last offered at the strikethrough price on
05-03-2026

$ 84.77 USD
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Sale - Save 19%
$ 104.99

This product was last offered at the strikethrough price on
05-03-2026

$ 84.77 USD
Free Shipping on orders $49 and up
Add to Wish List

On M52/S52-equipped BMWs, the factory crankcase ventilation (CCV) system is a notorious weak link. Between brittle plastic corrugated hoses that crumble from heat soak and an internal cyclone diaphragm prone to tearing, a failing CCV leads to massive oil consumption, vacuum leaks, and that dreaded "howling" whistle.

This kit addresses these issues with all new components and hardware. Both oil separator hoses, the cyclone separator itself, the mounting grommet, and the retaining bolts are included. Servicing this system is guaranteed to restore performance lost as a result of worn CCV components.

Kit includes:

Cyclone Separator/Crankcase Pressure Regulator Valve High Performance Silicone Breather Hose Return Hose Mounting Grommet Hex Bolt (3)

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URO Fuel Tank Vent Valve - 13907643106
URO Fuel Tank Vent Valve - 13907643106
URO - Corporate Logo
T#:50031887
Part#: 13907643106
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$ 44.99 USD
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$ 44.99 USD
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Replaces broken or failing vent valve.
Rear Oxygen Sensor Set - N52, N54
Rear Oxygen Sensor Set - N52, N54
Packaged by Turner - Corporate Logo
T#:55353594
Part#: 11787545074/5KT2
In Stock
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$ 366.99 USD
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$ 366.99 USD
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Sluggish oxygen sensors do a lot more than just light up your dashboard with an annoying Check Engine Light—they directly choke your BMW’s performance.
Bosch Oxygen Sensor Set - Pre and Post Catalytic Converter - N55
Bosch Oxygen Sensor Set - Pre and Post Catalytic Converter - N55 ...
Packaged by Turner - Corporate Logo
T#:55857772
Part#: 11787589475KT2
In Stock
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$ 335.99 USD
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$ 335.99 USD
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Extreme exhaust heat and carbon buildup degrade your factory oxygen sensors over time, sending lazy data to your DME and robbing you of performance.
Bosch Oxygen Sensors - Bank 1 And 2 Pre-Cat - N52
Bosch Oxygen Sensors - Bank 1 And 2 Pre-Cat - N52
Packaged by Turner - Corporate Logo
T#:56110313
Part#: 11787558055KT
In Stock
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$ 307.99 USD
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$ 307.99 USD
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Your engine's air fuel ratio needs to be dead on. Worn out factory pre-cat oxygen sensors delay vital data to the DME, leading to sub optimal fueling, lost horsepower, and dangerous hesitation under load.
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Front Oxygen Sensor Set - E9x, E82, E88, Z4
Front Oxygen Sensor Set - E9x, E82, E88, Z4
Packaged by Turner - Corporate Logo
T#:55317713
Part#: BFR1/2O2SKT2
In Stock
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$ 400.99

This product was last offered at the strikethrough price on
07-14-2026

$ 337.99 USD
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$ 337.99 USD
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Over time, that degradation robs your BMW of its crisp throttle response, tanks your fuel economy, and leaves you staring at a failed emissions ticket
Secondary Air Injection Pump
Secondary Air Injection Pump
Dorman - Corporate Logo
T#:56110341
Part#: 306-006
In Stock at Vendor
New Item
$ 427.99

This product was last offered at the strikethrough price on
07-17-2026

$ 323.99 USD
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$ 323.99 USD
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URO Crankcase Vent Valve Repair Kit - B58
URO Crankcase Vent Valve Repair Kit - B58
URO - Corporate Logo
T#:55713528
Part#: 11121025447
Ships in 2 Business Days
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$ 222.99

This product was last offered at the strikethrough price on
07-08-2026

$ 219.99 USD
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$ 219.99 USD
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The URO Parts Crankcase Vent Valve Repair Kit is the smart technician's fix for the notorious BMW crankcase ventilation failures.
Secondary Air Injection Pump
Secondary Air Injection Pump
URO - Corporate Logo
T#:50031894
Part#: 11721433958
Ships in 2 Business Days
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$ 302.99 USD
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$ 302.99 USD
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If you’re dealing with emissions-related faults, the Secondary Air Injection (SAI) pump is an important component to check. This system is designed to inject fresh air into the exhaust manifold during cold starts, helping reduce harmful emissions while the catalytic converters warm up. When the SAI pump is damaged or not operating correctly, emissions can increase and fault codes may be triggered. In states that require emissions testing, a failed air pump can easily result in a failed inspection. Replacing a faulty Secondary Air Injection Pump helps restore proper emissions control, clear related fault codes, and ensure your vehicle remains compliant with emissions requirements.
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Vargas PCV Delete Kit - Cap W/ -10ORB Plug & VTA Catch Can - BMW S55 Engine
Vargas PCV Delete Kit - Cap W/ -10ORB Plug & VTA Catch Can - BMW S55 ...
Vargas Turbo Technologies - Corporate Logo
T#:52164893
Part#: S55PCVCPCCVTA
Ships on Aug 6, 2026
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$ 399.99 USD
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$ 399.99 USD
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The VTT VTA Catch Can Kit is a comprehensive crankcase ventilation solution specifically tailored for the BMW S55 engine.
VTT B58 Cylinder Head Port Check Valve Kit - B58 Gen1/2/3 (B58/B58TU/B58TU2)
VTT B58 Cylinder Head Port Check Valve Kit - B58 Gen1/2/3 (B58/B58TU/...
Vargas Turbo Technologies - Corporate Logo
T#:49822558
Part#: VTTB58CHECK
Ships on Aug 6, 2026
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$ 69.99 USD
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$ 69.99 USD
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The VTT B58 Head Port Check Valve Kit is designed to convert the factory head ports used by the OEM low-side PCV system. These ports in the cylinder head utilize engine vacuum to evacuate crankcase gases, but in the process, can allow oil to enter the intake manifold, leading to valve carbon buildup and other performance issues over time. VTT's Billet Check Valve kit converts the head ports into a robust internal PCV system using precision-engineered check valves. These one-way valves allow vacuum to function as intended while blocking boost pressure from entering the crankcase or charge tract.
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VTT Low-Profile Crankcase Vent Adapter -16ORB - BMW S58, B58TU
VTT Low-Profile Crankcase Vent Adapter -16ORB - BMW S58, B58TU ...
Vargas Turbo Technologies - Corporate Logo
T#:51672705
Part#: VTT-S/B58-LP-CC-
Ships on Aug 6, 2026
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$ 41.99 USD
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$ 41.99 USD
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The VTT Low-Profile Crankcase Vent Adapter is the definitive solution for high-boost BMW builds where hood clearance is a premium.
VTT S58 Cylinder Head Port Check Valve Kit - S58 3.0L
VTT S58 Cylinder Head Port Check Valve Kit - S58 3.0L
Vargas Turbo Technologies - Corporate Logo
T#:49822559
Part#: VTTS58CHECK
Ships on Aug 6, 2026
New Item
$ 69.99 USD
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$ 69.99 USD
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The VTT S58 Head Port Check Valve Kit is designed to convert the factory head ports used by the OEM low-side PCV system. These ports in the cylinder head utilize engine vacuum to evacuate crankcase gases, but in the process, can allow oil to enter the intake manifold, leading to valve carbon buildup and other performance issues over time. VTT's Billet Check Valve kit converts the head ports into a robust internal PCV system using precision-engineered check valves. These one-way valves allow vacuum to function as intended while blocking boost pressure from entering the crankcase or charge tract.
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Rein Pressure Regulator Valve Repair Kit - E53, E60, E63, E64, E65, E66, E70
Rein Pressure Regulator Valve Repair Kit - E53, E60, E63, E64, E65, E...
Rein - Corporate Logo
T#:55821694
Part#: 11127547058
Ships in 4 Business Days
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$ 16.99 USD
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$ 16.99 USD
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This Rein Automotive repair kit allows you to service the internal components of the crankcase breather valve independently. Instead of replacing the entire, costly valve cover or manifold assembly, this kit provides the exact wear items required to rebuild the factory housing back to original operating specifications. All components are manufactured to strict OE tolerances. The diaphragm is molded from premium, oil-resistant elastomers engineered to withstand prolonged exposure to aggressive synthetic lubricants, fuel vapors, and extreme under-hood heat cycles without losing its elasticity or sealing profile.
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