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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If your BMW is throwing a CEL for fuel trim adaptations, oxygen sensors degrade from extreme exhaust heat and carbon buildup, sending lazy or incorrect data to your DME.
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Brand:
ES#:
5481586
Mfg#:
11787558055/73KT
In Stock
$338.99
This product was last offered at the strikethrough price on 07-08-2026
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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Civilized performance for the discerning enthusiast - +6HP/+5TQ
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Brand:
ES#:
3149135
Mfg#:
D660-0025-BLK
Ships in 6 Business Days
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$2081.99
This product was last offered at the strikethrough price on 07-08-2026
Increased sound and power with the SuperSprint performance headers, and a better flowing set of metallic sport cats
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Used to secure the exhaust manifold to the cylinder head
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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.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
5481192
Mfg#:
BFR1/2O2SKT
In Stock at Vendor
$327.99
This product was last offered at the strikethrough price on 07-07-2026
From stock exhaust system repairs to polished stainless steel performance exhaust, we have exhaust pipes, mufflers, resonators, and catalytic converters from the most respected suppliers in the business. Go loud, stay soft, look good with exhaust parts and systems from ECS Tuning.
Lifetime Replacement
