O2 Sensor Replacement
O2 Sensor Replacement
Oxygen sensors keep your fuel system at peak efficiency.
Alexandria & Central Louisiana · National Transmission
O2 Sensor Replacement in Alexandria, LA
A failing O2 sensor triggers a check engine light, reduces fuel economy, and can damage the catalytic converter over time. We diagnose which sensor is failing and replace with OEM-spec sensors for all makes and models.
What We Do
O2 Sensor Diagnostic Scan
Upstream & Downstream Replacement
Exhaust System Inspection
Fuel Trim Analysis
Check Engine Light Clearance
Why Choose National Transmission?
3-Year Nationwide Warranty
1–3 Day Turnaround
Family-Owned, 20+ Years
Certified & Licensed
Related Catalytic Converters Services
Visit Us
1521 MacArthur Dr., Alexandria, LA
Mon–Fri 8am–5pm