From a quick spark plug or filter swap to getting the most out of your engine and beyond, GM Genuine Parts and ACDelco are the true Original Equipment for GM vehicles. Our three-tiered roster also includes aftermarket parts for most other makes and models. So, whatever you drive and whatever your next DIY project is, O’Reilly has the GM Genuine Parts and ACDelco parts you need — the only parts backed by GM.
Spark Plugs
Spark new life into your vehicle, boat, RV, ATV, or outdoor power equipment with a fresh set of GM Genuine Parts or ACDelco Spark Plugs or Glow Plugs.
Oil, Fuel, and Air Filters
Ride in comfort and road trip in confidence with ACDelco GM OE and aftermarket filters.
Engine Management
Help keep your engine firing on all cylinders with alternators, starters, throttle bodies, sensors, and more.
Streamlined Packaging, Streamlined Shopping
We've updated our packaging to highlight our three-tiered roster of maintenance and repair parts to help you find the best fit for your vehicle. Making the choice between OE and aftermarket parts for all your DIY projects simpler.
Doing DIY Together
Contrary to popular belief, you don’t have to DIY alone. You can lean on your local O’Reilly store for all the GM Genuine Parts and ACDelco parts your vehicle needs. Whether you prefer to pop in or order online, O’Reilly is stocked with OE parts for your GM and the only aftermarket parts backed by GM for many other makes and models.
GM Original Equipment
The blue flag that marks our GM Genuine Parts and ACDelco Original Equipment does more than help you find the right parts for your project — it's a mark of confidence. A mark that lets you know you're using parts designed, engineered, and tested to rigorous standards and backed by General Motors.
Oil Filters
Fuel Pumps
O2 Sensors
Spark Plugs
Glow Plugs
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