Restore your BMW’s crankcase ventilation with this high‑quality Breather Valve Diaphragm Spring and Cap (11127803790).
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Brand:
ES#:
5394230
Mfg#:
11127803790
In Stock
ON SALE!
SAVE 24%
$15.99
This product was last offered at the strikethrough price on 05-02-2026
Sluggish O2 sensors don?t just trigger annoying Check Engine Lights; they cause poor fuel economy, rough idling, and can even degrade your expensive catalytic converters over time.
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Over time, factory oxygen sensors degrade from extreme exhaust heat and carbon buildup, leading to poor fuel economy, lost performance, and failed emissions tests.
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Is your BMW or MINI throwing a pesky check engine light, suffering from a rough idle, or guzzling fuel like it's track day? Over time, factory oxygen sensors degrade from extreme exhaust heat and carbon buildup, sending lazy signals to your DME.
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Located in the rear position of the exhaust manifold
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Brand:
ES#:
2712714
Mfg#:
11787539126
In Stock at Vendor
$109.99
This product was last offered at the strikethrough price on 05-07-2026
OEM Bosch Downstream O2 Sensor
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Brand:
ES#:
4316431
Mfg#:
11787577667
In Stock at Vendor
$121.99
This product was last offered at the strikethrough price on 04-10-2026
Oxygen sensors are used by the vehicle computer to adjust the air/fuel ratio and test vehicle emissions. This kit includes both rear Sensors.
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Lifetime Replacement
