TRQ O2 Oxygen Sensor Compatible with 2011-2015 Toyota Sienna - Direct

In this review of the TRQ O2 Oxygen Sensor compatible with 2011-2015 Toyota Sienna, the bottom line is straightforward: this part is aimed at DIY owners and independent shops that need a budget-friendly, direct replacement sensor with an easy install. The reviewer found the unit valuable for those who want pre-assembled wiring and a threaded, direct-fit mounting to match original equipment. While fit and installation are generally simple, functionality and long-term durability produced mixed results among users, so expect the usual tradeoffs when choosing a lower-cost replacement.

Key Features

• Direct fit reference numbers: Includes common reference numbers such as 8946508060 and 250-24914 to help confirm vehicle compatibility quickly.
• Pre-assembled wiring: Comes with a factory-style connector and wiring harness to reduce installation time and avoid splicing.
• Threaded mounting: The M18 x 1.5 threaded sensor matches the stock mounting style for a secure, sealed fit.
• Narrow-band sensor: Supplies the standard narrow-band output expected by factory engine management on compatible Sienna models.
• Multiple fit locations: Offered for downstream rear and downstream front positions on specified 2011-2015 Sienna engines to simplify ordering for common repair scenarios.

Who It's For

The TRQ O2 Oxygen Sensor is best for owners of 2011-2015 Toyota Sienna vehicles who are comfortable performing a swap themselves or who want a direct-replacement option for a routine emissions or check-engine related repair. It suits DIYers who value clear fit references and pre-assembled wiring that saves time under the vehicle.

Those who rely on long-term OEM-level durability or who cannot tolerate any risk of early failure should consider sourcing a higher-priced OEM or premium sensor instead, since user reports show mixed outcomes for longevity and occasional defective units.

Pros & Cons

Pros

• Good value for money compared with dealer parts, making it attractive for cost-conscious repairs.
• Ease of installation thanks to pre-assembled wiring harness and direct-threaded fit.
• Clear compatibility references and multiple reference numbers simplify confirming the correct part for specific Sienna years and engine types.

Cons

• Mixed reports on functionality and durability mean some buyers may receive defective units or experience shorter service life.

Specifications

Sensor Type	Narrow-Band
Thread Size	M18 x 1.5
Overall Length	20.69 in / 525 mm
Wiring Harness Length	17.76 in / 451 mm
Wire Quantity	4 with 5 terminals (female)
Wrench Size	0.87 in / 22 mm

Our Verdict

The TRQ O2 Oxygen Sensor is a sensible, budget-oriented direct replacement for many 2011-2015 Toyota Sienna owners who need a quick repair and prefer to install parts themselves. It offers clear fitment references and convenient pre-assembled wiring, delivering strong value when the part functions as expected; however, buyers should be aware of mixed user reports on longevity and occasional defects, so keep that in mind when deciding between economy and OEM options.

Frequently Asked Questions

Will this sensor fit my 2012 Sienna V6?
Yes, it is listed as compatible with 2012-2014 Toyota Sienna V6 3.5L downstream rear and with certain 2011-2012 and 2015 configurations-confirm fit with the vehicle fitment references.

Is this an OEM sensor?
No, this is a TRQ replacement narrow-band sensor intended as a direct fit aftermarket part rather than an original equipment unit.

Does it come with the wiring harness attached?
Yes, the unit includes a pre-assembled wiring harness and factory-style connector to simplify installation.