Ruiya 2Pcs Upstream & Downstream O2 Oxygen Sensor For 2001-2004 Chevy Impala, Buick Century, Pontiac Aztek

Description：<br> The oxygen sensor, located either upstream or downstream of the catalytic converter, is designed to monitor the air-fuel mixture under idle, moderate acceleration, and cruise conditions. Symptoms of a faulty or bad oxygen sensor include bad gas mileage, rough idle, reduced drivability, and an illuminated check-engine light. <br><br> Fitment：<br> 2004-2001 BUICK CENTURY V6-3.1 1Pcs Upstream + 1Pcs Downstream<br> 2004-2002 BUICK RENDEZVOUS V6-3.4 1Pcs Upstream + 1Pcs Downstream<br> 2004-2001 CHEVROLET IMPALA V6-3.4 1Pcs Upstream + 1Pcs Downstream<br> 2004-2001 CHEVROLET MONTE CARLO V6-3.4 1Pcs Upstream + 1Pcs Downstream<br> 2004-2001 CHEVROLET VENTURE V6-3.4 1Pcs Upstream + 1Pcs Downstream<br> 2004-2001 OLDSMOBILE SILHOUETTE V6-3.4 1Pcs Upstream + 1Pcs Downstream<br> 2004-2001 PONTIAC AZTEK V6-3.4 1Pcs Upstream + 1Pcs Downstream<br> 2003-2001 PONTIAC GRAND PRIX V6-3.1 1Pcs Upstream + 1Pcs Downstream<br> 2004-2001 PONTIAC MONTANA V6-3.4 1Pcs Upstream + 1Pcs Downstream<br>

• Manufacturer Part Number:234-4650, 234-4087
• Placement on Vehicle: Upstream, Downstream
• Manufacturer Warranty:1 Year

Fits Select:
2001-2004 BUICK CENTURY CUSTOM 6 Cyl 3.1 L
2001-2004 CHEVROLET IMPALA 6 Cyl 3.4 L
2004 BUICK RENDEZVOUS CX/CXL 6 Cyl 3.4 L
2002 BUICK RENDEZVOUS CX 6 Cyl 3.3 L
2001-2004 CHEVROLET MONTE CARLO LS 6 Cyl 3.4 L
2003 PONTIAC MONTANA LUXURY 6 Cyl 3.4 L
2001,2004 PONTIAC MONTANA 6 Cyl 3.4 L
2003 BUICK RENDEZVOUS CX/CXL 6 Cyl 3.3 L
2001-2003 PONTIAC GRAND PRIX SE 6 Cyl 3.1 L
2004 CHEVROLET VENTURE 6 Cyl 3.4 L
2002 PONTIAC MONTANA ECONOMY 6 Cyl 3.4 L
2001-2004 PONTIAC AZTEK 6 Cyl 3.4 L
2001,2003 CHEVROLET VENTURE LUXURY 6 Cyl 3.4 L
2002 CHEVROLET VENTURE ECONOMY 6 Cyl 3.4 L
2001 OLDSMOBILE SILHOUETTE 6 Cyl 3.4 L
2003-2004 OLDSMOBILE SILHOUETTE LUXURY 6 Cyl 3.4 L
2002 OLDSMOBILE SILHOUETTE ECONOMY 6 Cyl 3.4 L
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Manufacturer part number	MF-B2OS016
Vehicle make	Buick
Vehicle year	2001, 2002, 2003, 2004
Brand	Ruiya
Vehicle fitment type	Specific
Vehicle type	Car
Compatible cars	2004-2001 BUICK CENTURY V6-3.1 1Pcs Upstream + 1Pcs Downstream 2004-2002 BUICK RENDEZVOUS V6-3.4 1Pcs Upstream + 1Pcs Downstream 2004-2001 CHEVROLET IMPALA V6-3.4 1Pcs Upstream + 1Pcs Downstream 2004-2001 CHEVROLET MONTE CARLO V6-3.4 1Pcs Upstream + 1Pcs Downstream 2004-2001 CHEVROLET VENTURE V6-3.4 1Pcs Upstream + 1Pcs Downstream 2004-2001 OLDSMOBILE SILHOUETTE V6-3.4 1Pcs Upstream + 1Pcs Downstream 2004-2001 PONTIAC AZTEK V6-3.4 1Pcs Upstream + 1Pcs Downstream 2003-2001 PONTIAC GRAND PRIX V6-3.1 1Pcs Upstream + 1Pcs Downstream 2004-2001 PONTIAC MONTANA V6-3.4 1Pcs Upstream + 1Pcs Downstream
Model	B2OS016
Pack quantity	1