At right catalyst outlet (firewall side).
At left catalyst outlet (radiator side).
At right catalyst outlet (firewall side).
At right catalyst outlet (firewall side).
At right catalyst outlet (firewall side).
At right catalyst inlet (firewall side).
At right catalyst inlet (firewall side).
Air-Fuel Ratio Sensor
At right catalyst inlet (firewall side).
At right catalyst inlet (firewall side).
Air-Fuel Ratio Sensor
O.E. Quality Direct Fit Replacement Sensor
O.E. Quality Direct Fit Replacement Sensor OE
B2S2
B1S2 OE MFR: NTK
O.E. Quality Direct Fit Replacement Sensor OE
B2S2
O.E. Quality Universal Replacement Sensor
Condition: Excellent (A)
Mileage: 27,000 miles
Condition: Excellent (A)
Mileage: 27,000 miles
Condition: Excellent (A)
Mileage: 110,000 miles
Exact Fit
B2S2 OE MFR: NTK
Alternative Fit 1
B1S2
At catalyst outlet.
B1S2 OE MFR: NTK
Condition: Good (B)
Mileage: 103,700 miles
At catalyst outlet.
Radiator side
Radiator side
Firewall side
O.E. Quality Direct Fit Replacement Sensor
O.E. Quality Direct Fit Replacement Sensor
B1S2 OE MFR: NTK
B2S2 OE MFR: NTK
Condition: Excellent (A)
Mileage: 68,500 miles
Radiator side
B2S2 OE MFR: NTK
B1S2 OE MFR: NTK
O.E. Quality Direct Fit Replacement Sensor
B2S2 OE MFR: NTK
At catalyst outlet.
Built for the rear emission system.
Condition: Excellent (A)
Mileage: 47,900 miles
It is for the rear emission system.
Condition: Excellent (A)
Mileage: 61,300 miles
Condition: Good (B)
Mileage: 65,000 miles
B1S2 OE MFR: NTK
B1S1 OE Equivalent Design
B2S2 OE MFR: NTK
Radiator side
B2S2 OE MFR: NTK
It fits vehicles with a 3.5L engine. This is a rear lower oxygen sensor for the emission system.
Condition: Excellent (A)
Mileage: 6,700 miles
B1S2 OE MFR: NTK
Condition: Excellent (A)
Mileage: 47,000 miles
Condition: Good (B)
Mileage: 104,000 miles
Condition: Excellent (A)
Mileage: 20,000 miles
Condition: Excellent (A)
Mileage: 43,000 miles
Radiator side
Radiator side
Radiator side
Browse our selection of quality oxygen sensor parts designed specifically for your Acura MDX. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
A-Spec · Advance · Base · SH-AWD · Sport Hybrid · Tech · Touring · Type S
SUV · Sport Utility
V6 3.0L · V6 3.5L · V6 3.7L
Automatic · Automatic Dual Clutch