Upstream A/F Ratio and Downstream O2 Sensor Kit FIT 2001-2002 Toyota 4Runner 3.4L V6 California Emissions 234-9002 234-4261 2-Pack
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Product details
| Management number | 216157612 | Release Date | 2026/04/19 | List Price | US$18.40 | Model Number | 216157612 | ||
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| Category | |||||||||
- FIT 2001, 2002 Toyota 4Runner 3.4L V6 models. This hardware kit is specifically calibrated for vehicles equipped with California Emissions standards. Verify your vehicle's emission label under the hood and original sensor part numbers before purchase.
- This sensor set integrates one Upstream Air-Fuel (A/F) Ratio Sensor and one Downstream Oxygen Sensor. The hardware features a precision-fired ceramic element and a dual-layer stainless steel housing to maintain a closed-loop signal feedback system within the exhaust geometry.
- The sensors are engineered for thermal shock endurance, addressing erratic voltage feedback and air-fuel ratio signal lag in the engine monitoring loop. This hardware restores factory-specified signal characteristics and maintains proper voltage geometry for the catalytic converter monitoring system.
- Each unit undergoes cycles tested validation to ensure consistent heater resistance and response time across extreme heat cycles. The hardware integrates an OE-matching sealed connector to prevent moisture intrusion, meeting OE specifications for acoustic decibel limits and signal integrity.
- Professional installation is recommended; use an O2 sensor socket to ensure proper torque and avoid thread galling. Confirm your original sensors feature the same flange or thread-in mounting interface before hardware integration. Replaces OE# 234-9002, 234-4261, 89467-35011, 89465-35580.
| UPC | 635393149281 |
|---|---|
| Model | 234-9002 234-4261 |
| Brand Name | CUSTONEPARTS |
| Item Weight | 0.9 Pounds |
| Output Type | Push-Pull |
| Manufacturer | CUSTONEPARTS |
| Mounting Type | Flange Mount |
| Included Components | Comes with housing |
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