Infiniti QX4 Oxygen Sensor - Select Year

Position: Front Right
Direct Fit - - At Catalyst Inlet - At Catalyst Inlet - California - At Exhaust Manifold - At Exhaust Manifold - California - At Exhaust Manifold - Exc. California - At Exhaust Manifold - Models made in Mexico - At Exhaust Manifold - Models made in USA - At Exhaust Manifold Outlet - Before Catalyst - Before Catalyst - California - Exc. California - Exc. California made in Japan -

Position: Rear Left
Direct Fit - -

Position: Rear Right
Direct Fit - - At Catalyst Outlet -

Position: Left Lower
Direct Fit - At Catalyst Outlet - Left Catalyst Outlet -

Position: Right Lower
Direct Fit - At Catalyst Outlet - At front Catalyst Outlet - At Upper Left Catalyst Outlet - Radiator Side - Right Catalyst Outlet -

Position: Right Lower
Direct Fit - At Catalyst Inlet - Below Engine - At Catalyst Inlet - Below Engine - California - At Catalyst Outlet - Right Catalyst Outlet -

Position: Rear Left
Universal 4-Wire - - After Catalyst - At Catalyst Outlet - At Catalyst Outlet - California - At Rear Catalyst Outlet - At Rear Catalyst Outlet - Exc. California -

Position: Rear Right
Universal 4-Wire - - After Catalyst - At Catalyst Outlet - At Catalyst Outlet - California - At Rear Catalyst Outlet - At Rear Catalyst Outlet - Exc. California -

Position: Right Upper
Direct Fit - At Catalyst Inlet - At Exhaust Manifold - Exhaust Manifold Outlet - Radiator or firewall side -

Position: Rear Left
OE type - - At Catalyst Outlet -

Position: Front Right
- (at exh.man.) - At Exhaust Manifold - At Exhaust Manifold Outlet -

Position: Front Left
-

Position: Rear Right
- At Catalyst Outlet -

Position: Left Upper
OE Type - At Catalyst Inlet - Left Catalyst Inlet -

Position: Left Lower
OE Type - At Catalyst Outlet - Left Catalyst Outlet - Right Catalyst Outlet -

Position: Right Lower
OE Type - At Catalyst Outlet - Left Catalyst Outlet - Right Catalyst Outlet -

Position: Right Lower
At Catalyst Outlet - Right Catalyst Outlet -

Position: Rear Right
OE Connector - -

Position: Right Upper
At Catalyst Inlet -

Position: Left Upper
At Catalyst Inlet - Left Catalyst Inlet -

Position: Left Upper
At Catalyst Inlet - Left Catalyst Inlet -

Position: Right Upper
pigtail = 10" - At Catalyst Inlet - Right Catalyst Inlet -

Position: Rear Left
OE Connector - -

Position: Right Lower
At Catalyst Outlet - Right Catalyst Outlet -

Quality: OEM
Position: Right Lower
At Catalyst Inlet - Below Engine - At Catalyst Inlet - Below Engine - California - At Catalyst Outlet - Right Catalyst Outlet -

Position: Left Lower
At Catalyst Outlet - Left Catalyst Outlet -

Position: Right Upper
At Catalyst Inlet - Right Catalyst Inlet -

Position: Right Upper
At Catalyst Inlet -

Quality: OEM
Position: Right Lower
At Catalyst Outlet - Right Catalyst Outlet -

Quality: OEM
Position: Left Lower
At Catalyst Outlet - Left Catalyst Outlet -

Quality: OEM
Position: Left Lower
At Catalyst Outlet - Left Catalyst Outlet -