ZBN Oxygen O2 Sensor 234-4162 Compatible With Toyota Tacoma 4Runner Tundra Sequoia T100

???12 Months warranty. If amy problem in the quality warranty time, pls not hesitate to contact us for a free and easy replacement or refund.. ???ZBN assured. Brand-new.Fulfilled by Amazon.OEM quality.100% test.Easy installation. ???Please carefully check your vehicle year & make & model with our description and pictures. Position: Downstream/Upstream An upstream sensor is before the catalytic (cat.) converter, and a downstream sensor is after the catalytic converter. Upstream oxygen sensor is also known as sensor 1, or pre-cat, or upper oxygen sensor. Downstream oxygen sensor is also known as sensor 2, or post-cat, or lower oxygen sensor. Vehicle Fitment: Compatible With Toyota  Sequoia 4.7L -V8 2001-2004 Downstream,4WD Tundra 3.4L -V6 2000 Upstream; Automatic trans.; Exc. Calif Tundra 4.7L -V8 2000-2004 Downstream,4WD 4Runner 2.7L -L4 1996-2000 Upstream 4Runner 2.7L -L4 1999-2000 Downstream,RWD,Exc. Calif 4Runner 3.4L -V6 1996-1999 Upstream,Automatic trans Tacoma 2.4L -L4 1995-2000 Upstream,Standard trans Tacoma 2.7L -L4 1995-2000 Upstream Tacoma 2.7L -L4 1995-1997 Downstream Tacoma 2.7L -L4 1998-2000 Downstream,4WD,Standard trans Tacoma 3.4L V6 1995-2000 Upstream,Automatic trans Tacoma 3.4L V6 1995-2000 Downstream,4WD,Automatic trans Pickup 3.0L -V6 1994-1995 Downstream,RWD,Calif T100 2.7L -L4 1995-1998 Upstream,Automatic trans T100 3.4L -V6 1995-1998 Upstream,Automatic trans T100 3.4L -V6 1995-1998 Downstream,4WD Compatible OEM part number : 234-4162, 2344162,234 4162