4Pcs Up & Downstream Oxygen O2 Sensors For BMW 128I 325XI 528I X3 X5 Z4 234-5138
Fit for:
BMW 1 SERIES M L6-3.0 2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 128I L6-3.0 2013-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 135I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 323I L6-2.5 2011-2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 325I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 325XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 328I L6-3.0 2013-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 328I XDRIVE L6-3.0 2013-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 328XI L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 330I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 330XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 335I L6-3.0 2010-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 335IS L6-3.0 2013-2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 335I XDRIVE L6-3.0 2010-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 335XI L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 528I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 528I XDRIVE L6-3.0 2010-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW 528XI L6-3.0 2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW X3 L6-3.0 2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW X3 L6-3.0 2009-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW X5 L6-3.0 2010-2009 GAS ; Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW X5 L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
BMW Z4 L6-3.0 2015-2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
Specifications:
OE Numbers:
234-5138, 234-5139, 234-4876, 234-4892
Product Material: Stainless Steel
Color: Black, Silver
Installation Position: Upstream, Downstream
Functions:
1. The Upstream oxygen sensor is used to Monitor Raw Exhaust Gas to Adjust Air-fuel Ratio in Real-time, i.e., it is used to Detect Whether the Exhaust Gas Exceeds the Standard.
2. The Downstream oxygen sensor is mainly used to Detect Whether the Three-way Catalytic Converter Works Normally.
Packaging Weight: 543 g
Packaging Sizes (cm): 19.5 x 10.5 x 6.5
Features:
*Corrosion-Resistant Build
Stainless steel construction withstands exhaust heat and chemicals for long-term reliability.
*Efficient Contaminant Blocking
PTFE filter stops efficiency-robbing contaminants ( like soot, silicone, and grime ) from damaging the sensing element, which keeps the accuracy of the sensor and extends its lifespan.
*Faster Response Time
Precision zirconia element detects air-fuel changes instantly for smoother idle, sharper acceleration, and precise fuel control.
*Optimized Engine Performance
Maximizes fuel efficiency, reduces harmful emissions, and ensures smog test compliance.
*Perfect Fit
Built to strict quality control standards and with 100% factory-tested to ensure stable performance. Direct replacement, just install and drive.
Packaging Include:
Oxygen Sensors *4