O2 Oxygen Sensor, Upstream & Downstream Replacement Compatible with Chevy Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon | 2014-2018 | Replace OE# 234-4940, 234-4974

1. Perfect Vehicle CompatibilityThis upstream and downstream O2 oxygen sensor is perfectly compatible with Chevy Silverado 1500 4.3L/5.3L/6.2L (2014-2017), Chevy Suburban 5.3L & Tahoe 5.3L (2015-2018), GMC Sierra 1500 4.3L/5.3L/6.2L (2014), as well as GMC Yukon XL 5.3L/6.2L (2015-2018). Strict vehicle matching ensures precise fit and easy installation.2. OEM Replacement Part NumbersDirectly replace original part numbers: 234-4940, 12666612, 21581, F00HL00421, 18187, 12657188, 234-4974, 12655678, 21075, 12661898, 12643708, F00HL00410, 18054. Please verify your vehicle year, model, engine size and OEM part number before purchase to avoid mismatch.3. Premium Quality & High Temperature ResistanceCrafted with high-grade platinum and ceramic materials, paired with 310S stainless steel housing. This oxygen sensor withstands high temperatures up to 650°C, features ultra-fast signal response, anti-corrosion, wear-resistant performance and extended service life for long-term daily use.4. Optimize Engine Overall PerformanceOxygen sensor is a key part of the engine fuel system. It accurately monitors oxygen content in exhaust gas to adjust air-fuel ratio in real time. Effectively fixes rough idle, hard acceleration, excessive exhaust emissions and high fuel consumption, keeping your engine running stable and efficient.5. Professional After-Sales SupportWe focus on product quality and customer experience. If you receive defective, damaged or incompatible products, or meet any performance issues, please contact us via email at any time. Our professional customer service team will provide quick and effective solutions to guarantee your shopping satisfaction.

• Perfect Vehicle Compatibility:This upstream and downstream O2 oxygen sensor is perfectly compatible with Chevy Silverado 1500 4.3L/5.3L/6.2L (2014-2017), Chevy Suburban 5.3L & Tahoe 5.3L (2015-2018), GMC Sierra 1500 4.3L/5.3L/6.2L (2014), as well as GMC Yukon XL 5.3L/6.2L (2015-2018). Strict vehicle matching ensures precise fit and easy installation.
• OEM Replacement Part Numbers:Directly replace original part numbers: 234-4940, 12666612, 21581, F00HL00421, 18187, 12657188, 234-4974, 12655678, 21075, 12661898, 12643708, F00HL00410, 18054. Please verify your vehicle year, model, engine size and OEM part number before purchase to avoid mismatch.
• Premium Quality & High Temperature Resistance:Crafted with high-grade platinum and ceramic materials, paired with 310S stainless steel housing. This oxygen sensor withstands high temperatures up to 650°C, features ultra-fast signal response, anti-corrosion, wear-resistant performance and extended service life for long-term daily use.
• Optimize Engine Overall Performance:Oxygen sensor is a key part of the engine fuel system. It accurately monitors oxygen content in exhaust gas to adjust air-fuel ratio in real time. Effectively fixes rough idle, hard acceleration, excessive exhaust emissions and high fuel consumption, keeping your engine running stable and efficient.
• Professional After-Sales Support:We focus on product quality and customer experience. If you receive defective, damaged or incompatible products, or meet any performance issues, please contact us via email at any time. Our professional customer service team will provide quick and effective solutions to guarantee your shopping satisfaction.