AC Delco oil filters are made by General Motors' parts division and fit most GM vehicles plus many others
AC Delco is General Motors' own parts brand, so their oil filters are engineered to fit GM cars, trucks, and SUVs from multiple decades. You will also find AC Delco filters on the shelf for non-GM vehicles — they make filters for Ford, Chrysler, Honda, Toyota, and others. The filter sits between your engine and the oil supply line and traps dirt, metal particles, and sludge before they circulate through your engine.
AC Delco filters come in different sizes and thread patterns because different engines need different flow rates and connection types. A filter that fits a 2015 Chevy Silverado will not fit a 2015 Honda Civic. You need to match the filter to your specific vehicle year, make, model, and engine size — not just guess based on brand.
The brand is widely available at auto parts stores, Walmart, Amazon, and many dealerships. AC Delco filters typically cost between $8 and $18 depending on the model and where you buy, though dealerships usually charge more than independent retailers.
Key Takeaways
- AC Delco filters fit GM vehicles primarily, but the brand also makes filters for Ford, Chrysler, Honda, Toyota, and other manufacturers.
- You must match the filter to your vehicle's year, make, model, and engine size — the wrong size will not thread on or will restrict oil flow.
- AC Delco filters are sold at auto parts chains, big-box retailers, online marketplaces, and GM dealerships.
- Prices range from $8 to $18 at independent retailers, though dealerships often charge significantly more for the same filter.
How to find the right AC Delco filter for your vehicle
Start with your vehicle's owner manual or service record — both list the correct filter part number. If you do not have either, use the parts lookup tool on the AC Delco website or the retailer's website. You enter your vehicle year, make, model, and engine size, and the tool returns the correct part number and cross-reference information.
Write down the part number before you go to the store or order online. When you arrive at the counter or the product page, confirm the part number matches what the system told you. Do not rely on a store employee to guess the right filter — mistakes happen, and installing the wrong one can damage your engine or cause the filter to leak.
If you are unsure about your engine size, check the sticker on the inside of your driver's door jamb or the engine cover under the hood. The door jamb sticker lists the original factory specifications, including engine displacement in liters or cubic inches.
AC Delco filter types and what they filter
AC Delco makes standard spin-on filters, which are the most common type. These screw onto a threaded port on the engine block and contain pleated paper media inside a metal canister. When you change the oil, you unscrew the old filter, wipe the port clean, and screw on a new one.
Some AC Delco filters are labeled as "heavy-duty" or "extended-life," which means they use thicker or more densely packed media to trap smaller particles and last longer between changes. Extended-life filters are designed to work with synthetic or synthetic-blend oils and may be rated for 10,000 miles or more, compared to 5,000 to 7,000 miles for a standard filter with conventional oil.
The filter media itself does the actual work — it catches particles as oil flows through. A clogged filter restricts oil flow, which can trigger a low-pressure warning light on your dashboard. If you ignore it, the engine can run without adequate lubrication and suffer serious damage.
When to replace an AC Delco oil filter
Replace your oil filter every time you change your oil. The two go together — old oil and an old filter are both less effective at protecting your engine. If you change your oil every 5,000 miles, you change the filter every 5,000 miles. If you use synthetic oil and change it every 10,000 miles, you change the filter every 10,000 miles.
Check your owner manual for the manufacturer's recommended interval for your specific vehicle and oil type. Some newer vehicles with synthetic oil can go 10,000 to 15,000 miles between changes, while older vehicles or those using conventional oil typically need a change every 3,000 to 5,000 miles. Towing, frequent short trips, or dusty driving conditions may shorten the interval.
If your oil pressure warning light comes on between scheduled changes, check the filter first. A clogged filter can trigger the light even if you have plenty of oil in the pan. If the light stays on after you change the filter and confirm the oil level, have the engine checked by a mechanic.
AC Delco filters versus other brands
AC Delco filters are OEM (original equipment manufacturer) parts for GM vehicles, which means they meet the exact specifications GM engineers set for those engines. Many independent mechanics and GM owners trust AC Delco filters because they are made by the same company that designed the vehicle.
Other major brands like Fram, Mobil 1, Bosch, and Wix also make quality filters that fit GM and other vehicles. These aftermarket filters are often cheaper than AC Delco and perform similarly for most drivers. The difference in price usually reflects brand reputation and marketing rather than a major difference in performance.
If you own a GM vehicle and want the OEM filter, AC Delco is the direct choice. If you own a non-GM vehicle, AC Delco is one option among several, and you may find other brands more readily available or less expensive at your local store.
Where to buy AC Delco oil filters
Auto parts chains like AutoZone, O'Reilly, Advance Auto Parts, and NAPA stock AC Delco filters in most locations. You can walk in, give them your vehicle information, and they will pull the correct filter from the shelf. Many of these stores also offer installation services for a fee if you do not want to change the filter yourself.
Walmart and Target carry AC Delco filters in their automotive sections, though selection may be smaller than at a dedicated auto parts store. Amazon and other online retailers ship filters to your home, which is convenient if you know the part number and want to avoid a store trip.
GM dealerships sell AC Delco filters at their service departments. Dealership prices are typically higher than independent retailers — you may pay $15 to $25 for a filter that costs $8 to $12 at an auto parts store. Dealerships are useful if you need the filter when ready and want to have it installed by factory-trained technicians, but they are not the cheapest option.
How to install an AC Delco oil filter
Changing an oil filter is a straightforward task if you have basic tools and a safe place to work. Locate the filter on your engine — it is usually a cylindrical canister on the side or top of the engine block. Place a drain pan underneath to catch any oil that spills when you remove the old filter.
Use an oil filter wrench to loosen the old filter by turning it counterclockwise. Once it is loose enough, unscrew it by hand and set it aside. Wipe the threaded port on the engine block with a clean cloth to remove any dirt or old gasket material.
Before you install the new filter, coat the rubber gasket (the ring on top of the filter) with a thin layer of fresh oil. This helps the gasket seal properly and makes removal easier next time. Screw the new filter onto the port by hand until the gasket touches the engine block, then turn it an additional three-quarter turn. Do not use the wrench to tighten it — hand-tight is correct.
Start the engine and let it run for a minute, then turn it off and wait five minutes for the oil to settle. Check the oil level with the dipstick and top off if needed. Look under the engine for any leaks around the filter. If oil is dripping, the filter may not be tight enough — turn it another quarter turn and check again.
Frequently Asked Questions
Can I use an AC Delco filter on a non-GM vehicle?
Yes, AC Delco makes filters for many brands including Ford, Chrysler, Honda, and Toyota. You must match the part number to your specific vehicle. Using the wrong filter size or thread pattern will cause leaks or restrict oil flow, so verify the part number before you buy.
How long does an AC Delco oil filter last?
A standard AC Delco filter lasts as long as your oil change interval — typically 5,000 to 7,000 miles with conventional oil or 10,000 to 15,000 miles with synthetic oil. Extended-life AC Delco filters may last longer if paired with synthetic oil, but always follow your vehicle manufacturer's recommended interval.
What happens if I install the wrong size AC Delco filter?
The wrong filter may not thread onto the engine port, or it may fit but restrict oil flow and trigger a low-pressure warning light. In worst cases, an improperly installed filter can leak oil or come loose while driving. Always confirm the part number matches your vehicle before installation.
Is AC Delco more expensive than other oil filter brands?
AC Delco filters are typically mid-range in price — more expensive than budget brands like Fram but often less expensive than premium synthetic filters. Dealerships charge more than independent retailers for the same AC Delco filter. Prices vary by location and retailer.
Do I need to change the filter if I only top off my oil between changes?
No. The filter should be changed only when you change the oil. Topping off the oil level does not affect the filter. Changing the filter without changing the oil, or vice versa, defeats the purpose of either service.