Monitors exhaust gas temperatures for air/fuel ratio
Up to the 2012 model year
Also known as the 'combi valve'
Keep your engine running efficiently
From VIN 8D-W-007800, split is in the 1998 model year
OEM Bosch wideband pre-catalytic converter oxygen sensor
Model years 2016–2018 engine code CYNB only
Restore fuel mileage and clear codes
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For cylinders 1-3
Located before catalytic converter, restore mileage and clear codes
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For cylinders 4-5
This product was last offered at the strikethrough price on
08-01-2026
Located behind the catalytic converter
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Also known as the 'combi valve'
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Keep your emissions in check
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Located behind the catalytic converter
Fits right side
Located behind the catalytic converter
Controls actuation of the Combi Valve or Diverter Valve
This product was last offered at the strikethrough price on
07-23-2026
Comes with, Oil Filter Adapter, Oil Cooler O-Ring, Sealing O-Ring (34.2x3), and Oil Filter Adapter Gasket
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
07-09-2026
Restore engine performance
10X Entries Into Our F80 M3 Sweepstakes
From VIN 8E-4-000001, split is in the 2004 model year
This product was last offered at the strikethrough price on
10-05-2026