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

★★★★★ 4.4 99 reviews

$45.99
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by sjsacharitabletrust.com
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
$45.99
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Apr 26
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by sjsacharitabletrust.com
Free 30-day returns Details

Product details

Management number 216157612 Release Date 2026/04/19 List Price $18.40 Model Number 216157612
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

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

4.4 out of 5
★★★★★
99 ratings | 41 reviews
How item rating is calculated
View all reviews
5 stars
81% (80)
4 stars
5% (5)
3 stars
2% (2)
2 stars
1% (1)
1 star
11% (11)
Sort by

There are currently no written reviews for this product.