ISINMOTOR Upstream & Downstream O2 Oxygen Sensor Kit for Chevrolet Cobalt/HHR 2005-2011 — OE Fit, Fast Heater

ISINMOTOR upstream and downstream oxygen sensor kit replaces original sensors to restore accurate exhaust readings and support efficient engine operation for compatible Chevrolet, Pontiac, and Saturn models.

When an oxygen sensor underperforms, the engine computer receives incorrect air/fuel information, which can hurt fuel economy and emissions. This ISINMOTOR kit contains one upstream and one downstream O2 sensor engineered to match factory fit and function for select Chevrolet Cobalt, HHR, Pontiac G5, and Saturn Ion/Vue models. Each sensor uses corrosion-resistant materials and a fast heater element so they reach operating temperature quickly and give reliable data from cold starts onward.

Which vehicles and engine sizes does this kit fit?

Confirm fitment by cross-checking your vehicle make, model, year, and engine displacement. The kit covers a range of GM compact cars and compact SUVs from the mid-2000s to early 2010s across 2.2L and 2.4L engines.

• Chevrolet Cobalt 2005–2010 (2.2L) and 2006–2008 (2.4L)
• Chevrolet HHR 2006–2011 (2.2L) and 2009–2011 (2.4L)
• Pontiac G5 2007–2009 (2.2L) and 2007–2008 (2.4L)
• Saturn Ion 2005–2007 (2.2L) and 2006–2007 (2.4L); Saturn Vue 2006–2007 (2.2L) and 2007 (2.4L)

What OE part numbers does the ISINMOTOR kit replace, and what’s included?

The package is supplied as a matched upstream/downstream pair to ensure consistent readings before and after the catalytic converter. Verify your vehicle’s required OE numbers before purchase to avoid fitment errors.

• Upstream sensor replaces OE number 234-4668
• Downstream sensor replaces OE number 234-4066
• Kit content: 1 upstream O2 sensor + 1 downstream O2 sensor
• Pre-coated anti-seize threads and one-year quality guarantee included

How do these sensors perform compared with factory components?

ISINMOTOR sensors are manufactured with durable alloys and precision ceramic elements to measure exhaust oxygen content accurately. A rapid-response heater reduces the time the engine runs in open-loop, helping the engine management system make better fueling decisions sooner.

• Platinum electrodes and high-grade ceramics for stable, precise signals
• 310S stainless steel housing for corrosion resistance in exhaust environments
• High-efficiency heater element for quick warm-up on cold starts
• Direct OE-fit design for a plug-and-play replacement

What should I expect during installation and after fitting the sensors?

Installation is straightforward when matching your vehicle fitment: the sensors thread into the exhaust and plug into the factory wiring harness. After installation, the vehicle’s ECU will resume using the corrected oxygen readings; if diagnostic trouble codes persist, they may reveal other engine or exhaust system issues requiring professional inspection.

• Direct-fit connector aligns with original wiring—no splicing required
• Anti-seize on threads prevents galling and eases future removal
• One-year quality guarantee from ISINMOTOR
• If codes like P0135 or P0171 remain, seek diagnostic help—sensors can reveal pre-existing issues

Who this is for: This ISINMOTOR upstream and downstream O2 sensor kit is designed for DIY mechanics, independent repair shops, and owners of the listed Chevrolet, Pontiac, and Saturn vehicles who need a faithful, cost-effective replacement for worn or failed oxygen sensors. Choose this kit when you want factory-style fitment, quick heater response, and materials built to resist exhaust corrosion while restoring accurate air/fuel monitoring.