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Wastegate Actuator

The wastegate controls how much boost the turbocharger can produce by limiting the speed that the turbine wheel is allowed to spin. The actuator opens a valve (wastegate) and allows exhaust gasses to bypass the wheel, limiting boost to a preset level. Many earlier turbocharged BMWs use a vacuum-controlled actuator assembly, while later model F chassis and newer vehicles use an electronic wastegate actuator.
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Packaged by Turner - Corporate Logo
T#:15677499
Part#: 116586125750KT
In Stock
Sale - Save 13% $ 240.99

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

$ 209.05 USD
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Sale - Save 13%
$ 240.99

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

$ 209.05 USD
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The wastegate actuator releases excess boost pressure. A failed unit may result in a boost leak, reduced performance, and, ultimately, turbocharger failure. If your wastegate actuator has failed, replace it with this OEM part from Turner Motorpsort to restore performance and prolong engine life.
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Packaged by Turner - Corporate Logo
T#:15677490
Part#: 11721439973-KT
In Stock
Sale - Save 45% $ 408.99

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

$ 226.02 USD
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Sale - Save 45%
$ 408.99

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

$ 226.02 USD
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Kit includes both boost solenoids, vacuum hose and T fitting for a easy leak free install
Packaged by Turner - Corporate Logo
T#:51883669
Part#: T11658509323BKT
In Stock
New Item
Sale - Save 3% $ 176.99

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

$ 171.26 USD
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Sale - Save 3%
$ 176.99

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

$ 171.26 USD
Free Shipping on orders $49 and up
The factory boost solenoids, also known as pressure converters, are a common issue on the M57 engine. The vacuum hose also hardens over time due to heat, and can crack or split, leading to vacuum leaks. These failures result in a loss of power, limp mode, lazy throttle response, and check engine lights. This basic kit includes two replacement boost solenoids to restore engine power and performance, plus new silicon vacuum hose that will last much longer than the OE rubber vacuum hose.
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Packaged by Turner - Corporate Logo
T#:56363350
Part#: 11747626351KT2
Ships in 1-2 days
New Item
$ 259.99 USD
Free Shipping on orders $49 and up
Built around OEM quality components tested to withstand severe heat cycles, the Turner Motorsport Boost Control Maintenance Kit restores precise wastegate actuation.