RANSOTO O2 Oxygen Sensor Set of 4 for 2008–2014 GM Trucks & SUVs — Upstream and Downstream, Direct-Fit

RANSOTO O2 Oxygen Sensor set of 4 replaces 234-4668/234-4256 to restore accurate air-fuel readings on 2008–2014 GM SUVs and trucks.

These four replacement upstream and downstream oxygen sensors are engineered to match the fit and function expected by late‑2000s and early‑2010s GM V8 platforms. Built with heat‑resistant materials and corrosion protection, the sensors monitor exhaust oxygen levels so the engine control module can adjust fueling and emissions strategies. The kit is offered with a six‑month satisfaction warranty and is intended as a direct-fit alternative to OEM part numbers listed below.

Which Chevrolet and GMC models are these sensors compatible with?

These sensors are specified for a broad range of GM full-size trucks and SUVs from 2008 through 2014. They cover both upstream (pre-catalytic converter) and downstream (post-catalytic converter) sensor positions where required by the engine management system.

• Cadillac Escalade 2008–2014
• Chevrolet Avalanche 2008–2013, Silverado 1500/2500/3500 series 2008–2013
• Tahoe and Suburban 1500 2008–2014
• GMC Yukon/Yukon XL and Sierra 1500/2500/3500 2008–2014

What OEM part numbers do these replace and how do they match?

This RANSOTO kit is made to be a direct replacement for several commonly referenced OEM part numbers. The electrical connectors, thread pitches, and sensor lengths are designed to align with factory locations to simplify installation and reduce the need for adapters.

• Replaces 234-4668 and 234-4256 (primary referenced items)
• Also compatible with part references 213-4229, 12609457, 213-3866, 12583804
• Includes both upstream and downstream sensors to address all four monitoring positions

How are these sensors built and what maintenance benefits should I expect?

RANSOTO sensors are manufactured using high‑temperature rubber seals and durable sensing elements that resist rust and contamination from exhaust gases. Regular replacement of faulty oxygen sensors can help the engine run closer to factory fuel trim targets, which may improve drivability and reduce emission faults.

• High‑temperature rubber and corrosion‑resistant materials for long service life
• Pretested before sale to ensure consistent performance
• Helps the vehicle ECU return to proper air–fuel correction and reduce emissions codes

What warranty and support come with the RANSOTO sensors?

RANSOTO provides a six‑month warranty and a customer satisfaction promise for this sensor set. If the product does not meet your expectations, contact the seller directly for troubleshooting, replacement, or refund options.

• Six‑month warranty against defects
• Direct seller support for fitment or performance questions
• 100% satisfaction guarantee policy

Who is this for: This four‑sensor kit is suited for owners, mechanics, and fleet technicians maintaining GM full‑size trucks and SUVs from model years 2008–2014 who need a cost‑effective, direct‑fit replacement for worn or failing oxygen sensors. It’s especially helpful for vehicles exhibiting check‑engine lights related to oxygen sensors, poor fuel economy, or failed emissions inspections where replacing both upstream and downstream sensors can restore proper sensor feedback.