O2 Oxygen Sensor Upstream Downstream for Honda Civic (2006-2015) 1.8L

Direct-Fit Replacement Oxygen Sensor Kit for 2006-2015 Honda Civic (FA1, FG1, FB2)

What it Does: The Upstream and Downstream O2 Oxygen Sensor Kit monitors exhaust gas stoichiometry on the 2006-2015 Honda Civic to maintain optimal air-fuel ratios, clear check engine codes, and restore factory fuel economy.

The Stock Honda Civic Sensor Degradation

Over extended heat cycles, factory oxygen sensors on the R18A1 and R18Z1 engines suffer from internal zirconia element degradation, silicone contamination, and soot accumulation. As heater circuit resistance deviates and response times lag, the ECU defaults to rich open-loop fuel trims, resulting in poor MPG, fouled catalytic converters, and recurrent diagnostic trouble codes such as P0134, P0135, or P0420 across high-mileage FA1 and FB2 chassis.

The Engineering Solution

This matched upstream air-fuel ratio sensor and downstream heated oxygen sensor set delivers factory-calibrated voltage signals to the ECM. Manufactured with premium high-temperature ceramic sensing elements and double-protection stainless steel housings, these sensors resist thermal shock and exhaust gas corrosion. Pre-applied anti-seize compound on precision-cut threads and OEM-spec waterproof electrical connectors ensure a drop-in installation, replacing worn components matching OEM numbers 36531-RNA-003 and 36532-RNA-A01 without wire splicing.

What's Included

• 1PCS Upstream Oxygen (A/F) Sensor
• 1PCS Downstream Oxygen O2 Sensor

Technical Specifications

Compatibility

• 2006-2015 Honda Civic DX, LX, EX, EX-L, HF (1.8L l4 Gas)

Frequently Asked Questions & Fitment Warnings

Does this fit the FA1 / FB2 Civic?

Yes, this is a direct fit for the 2006-2015 Honda Civic equipped with the R18 1.8L engine; it does not fit Civic Si 2.0L (K20) or 2.4L (K24) models, nor Hybrid variants.

Is thread lubricant or wire splicing required for installation?

No, these units come equipped with direct-fit OE-style harness pigtails and pre-treated threads for a direct plug-and-play installation.

The Honda Caliber

Keep your JDM daily driver operating at factory efficiency with precision exhaust feedback, restoring smooth power delivery, clean tailpipe emissions, and reliable closed-loop fuel monitoring.