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4-Pc O2 Sensor Kit 234-4668 & 234-4256 for Chevy Silverado, Tahoe & GMC Sierra V8
4-Pc O2 Sensor Kit 234-4668 & 234-4256 for Chevy Silverado, Tahoe & GMC Sierra V8
Regular price
$129.99 USD
Regular price
$139.99 USD
Sale price
$129.99 USD
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4-Piece Upstream & Downstream O2 Sensor Kit
This kit includes two upstream oxygen sensors equivalent to 234-4668 and two downstream oxygen sensors equivalent to 234-4256. It is intended for select Chevrolet, GMC, and Cadillac V8 applications. Compatibility varies by model year, engine, emissions specification, connector, and sensor position. Please verify all OE part numbers before ordering.
This kit includes two upstream oxygen sensors equivalent to 234-4668 and two downstream oxygen sensors equivalent to 234-4256. It is intended for select Chevrolet, GMC, and Cadillac V8 applications. Compatibility varies by model year, engine, emissions specification, connector, and sensor position. Please verify all OE part numbers before ordering.
🛠️ What is Included in this 4-Pack Bundle?
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2x Premium Upstream O2 Sensors (Front Position / Sensor 1)
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Interchange Cross Reference: Direct equivalent to industry part number 234-4668, GM OEM
12596558, and AC Delco213-1699.
- Location: Installs directly into the left (Bank 1) and right (Bank 2) exhaust manifolds prior to the catalytic converters.
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Interchange Cross Reference: Direct equivalent to industry part number 234-4668, GM OEM
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2x Premium Downstream O2 Sensors (Rear Position / Sensor 2)
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Interchange Cross Reference: Direct equivalent to industry part number 234-4256, GM OEM
12611165, and AC Delco213-4408.
- Location: Installs directly past the catalytic converter core matrices to provide steady emissions compliance loop feedback.
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Interchange Cross Reference: Direct equivalent to industry part number 234-4256, GM OEM
📋 Master Vehicle Application Registry (V8 Framework)
Important Fitment Information
The applications below are general references and require vehicle-specific verification. Confirm the model year, engine size, Federal or California emissions configuration, connector, and OE numbers before ordering. Do not rely on vehicle model alone.
The applications below are general references and require vehicle-specific verification. Confirm the model year, engine size, Federal or California emissions configuration, connector, and OE numbers before ordering. Do not rely on vehicle model alone.
1. Chevrolet Applications (Chevy)
- Chevy Silverado 1500 / 2500 HD / 3500 HD: 4.8L, 5.3L, 6.0L, 6.2L V8 powertrains (2008–2013)
- Chevy Tahoe: 4.8L, 5.3L, 6.0L, 6.2L V8 models (2008–2014)
- Chevy Suburban 1500 / Suburban 2500: V8 displacements (2008–2014)Select V8 engine configurations; verify engine size and OE numbers before ordering.
- Chevy Avalanche / Avalanche 1500: 5.3L / 6.0L active fuel management V8s (2008–2013)
2. GMC Applications
- GMC Sierra 1500 / 2500 HD / 3500 HD: 4.8L, 5.3L, 6.0L, 6.2L Vortec V8 engines (2008–2013)
- GMC Yukon / Yukon XL 1500 / Yukon XL 2500: All platform luxury V8 trims (2008–2014)
3. Cadillac Applications
- Cadillac Escalade / Escalade ESV / Escalade EXT: 6.2L high-output V8 editions (2008–2014)
🔍 Related Diagnostic Trouble Codes
A faulty oxygen sensor may contribute to the diagnostic trouble codes below. These codes can also be caused by wiring faults, exhaust leaks, fuel-system issues, or catalytic-converter problems. Proper diagnosis is recommended before replacing any sensor.
Upstream sensor-related codes: P0131, P0133, P0135, P0151, P0153, and P0155 may be associated with upstream sensor, heater-circuit, wiring, or fuel-system faults.
Downstream sensor-related codes: P0136, P0141, P0156, and P0161 may be associated with downstream sensor, heater-circuit, or wiring faults. P0420 and P0430 can also indicate catalytic-converter or exhaust-system problems and do not confirm that an oxygen sensor is faulty.
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