The Denso Air/Fuel Ratio Sensor 234-9131 is presented as a direct-fit replacement for select Acura and Honda models, offering wide-band planar zirconia sensing, a 12:1–19:1 AFR range, and tarnish-proof platinum electrodes for durability. What are the exact fitment years, connector type, and installation torque specs? Practical points: fast response time, OEM-equivalent dimensions, and price competitiveness — details that matter for performance, longevity, and engine efficiency will follow.
Key Takeaways
- Precise wide-band planar zirconia sensor offers quick response across ~12:1–19:1 air/fuel ratios for accurate readings.
- Designed as a 4-wire, 8.27-inch harness direct-fit replacement for specified Acura and Honda models.
- Tarnish-proof platinum electrodes enhance durability and typically match OEM service life.
- Installation requires correct connector fit, proper routing, torque to spec, and clearing codes after replacement.
- Competitively priced OEM-quality alternative delivering reliable performance and improved throttle response.
Product Features and Technical Specs
A compact, precision sensor, the Denso Air/Fuel Ratio Sensor (234-9131) delivers wide-band measurement for select Acura and Honda models, combining quick response and durable materials for reliable engine management.
It uses advanced sensor technology: a wide-band planar zirconia element with tarnish-proof platinum electrodes, measuring approximately 12:1 to 19:1 air/fuel ratios.
What are the specs? 4-wire, 8.27-inch harness, 5.75 x 2.19 x 1.88 inches, 0.3 pounds.
How to approach installation? Follow installation guidelines: secure wiring, torque to manufacturer spec, verify connector fit, clear codes after replacement.
Practical, precise, liberation-minded guidance.
Compatibility and Fitment Details
Compatibility for the Denso Air/Fuel Ratio Sensor (PN 234-9131) centers on specific Acura and Honda models and requires attention to harness length, connector type, and engine management expectations. The reviewer notes vehicle applications: Acura ILX (2016–2022), TLX (2015–2020); Honda Accord (2013–2017), CR-V (2015–2019). Installation instructions emphasize the 8.27-inch, 4-wire harness, connector match, and sensor placement. Practical questions: Will it fit my car? Check part interchange 365315A2A01 and measurements: 5.75 x 2.19 x 1.88 in, 0.3 lb. Liberation-focused owners gain clarity, agency, confidence.
| Make | Model Year | Harness (in) |
|---|---|---|
| Acura | ILX 2016–2022 | 8.27 |
| Acura | TLX 2015–2020 | 8.27 |
| Honda | Accord 2013–2017 | 8.27 |
| Honda | CR-V 2015–2019 | 8.27 |
Performance, Durability, and Value Assessment
Having established fitment and harness specifics, the review now evaluates how the Denso Air/Fuel Ratio Sensor (PN 234-9131) performs in real-world use, how long it lasts, and whether it represents good value for owners.
The sensor delivers quick-response planar zirconia readings across ~12:1–19:1, improving sensor efficiency and throttle response.
Durability benefits include tarnish-proof platinum electrodes and typical life matching OEM expectations.
Installation tips: torque spec, 8.27-inch harness routing, and anti-seize avoidance.
Q: Is it worth it?
A: Yes for affected Acura/Honda models—accurate, durable, OEM-quality, priced competitively; practical, measured replacement choice.
