Mopar filters are engineered specifically for Chrysler, Dodge, and Jeep engines, and the 5.7 Hemi uses Mopar part number 68157291AA or 68157291AB as its factory filter

The 5.7 Hemi engine appears in Dodge Ram trucks, Chargers, Challengers, Jeep Grand Cherokees, and Chrysler 300 models across multiple years. Mopar is Stellantis's parts division and manufactures filters designed to the exact specifications Chrysler engineers set for each engine. Using the correct Mopar filter matters because it affects oil flow rate, bypass valve pressure, and how long the filter can run before clogging — all of which influence engine wear and longevity.

The two part numbers above are the current Mopar filters for the 5.7 Hemi. Both are equivalent; the difference is usually manufacturing date or supplier. You will find them at Mopar dealerships, online retailers like RockAuto or Amazon, and some independent shops. Prices typically range from $12 to $20 per filter, depending on where you buy and whether you are purchasing a single filter or a multi-pack.

Key Takeaways

  • Mopar part numbers 68157291AA and 68157291AB are the factory filters for the 5.7 Hemi and are interchangeable.
  • The 5.7 Hemi uses a spin-on filter mounted on the engine block; you do not need an adapter or housing change.
  • Mopar filters have a 10,000-mile service interval under normal driving, though some owners extend to 7,500 miles for towing or severe conditions.
  • Aftermarket filters from Fram, Motorcraft, or ACDelco will fit physically but may not meet Chrysler's pressure and flow specifications for this engine.

How the 5.7 Hemi filter system works

The 5.7 Hemi uses a spin-on filter that threads directly onto a filter head on the engine block. Oil enters the filter housing under pressure from the oil pump, passes through the pleated paper media, and returns to the engine. A bypass valve inside the filter opens if pressure builds too high — which happens when the filter is cold or clogged — so oil still reaches the engine even if the filter is restricted.

The Mopar filter for the 5.7 Hemi has a bypass valve set to open at a specific pressure. If you use a filter with a different bypass pressure, you risk either starving the engine of oil (if the valve opens too early) or running dirty oil (if it opens too late). This is why Mopar specifies the exact filter rather than saying "any spin-on filter will work."

Mopar part numbers and where to find them

The primary Mopar filters for the 5.7 Hemi are 68157291AA and 68157291AB. Both are genuine Mopar products and are functionally identical. You may also see older part numbers like 5281090AA listed in some databases, but that number is superseded and harder to find.

You can order these filters from a Chrysler, Dodge, or Jeep dealership parts department — they will have them in stock or can order them overnight. Online retailers including RockAuto, Amazon, eBay, and Walmart carry Mopar filters and often ship faster than dealerships. Independent repair shops that work on Dodge and Jeep vehicles typically stock them as well. Prices are usually lowest at RockAuto or Walmart, while dealerships charge a small premium but may provide authenticity.

Aftermarket filters and compatibility

Fram, Motorcraft, ACDelco, and other major aftermarket brands make filters that will physically thread onto the 5.7 Hemi. However, they are not engineered to Chrysler's specifications. The bypass valve pressure, media thickness, and flow rate differ from the Mopar filter, which can affect how the engine's oil pressure sensor reads and how quickly the filter clogs.

Some owners use aftermarket filters without when ready problems, especially if they change oil frequently. But Chrysler engineers designed the 5.7 Hemi's oil system around the Mopar filter's characteristics. If you want to match the factory design, stick with Mopar. If cost is your main concern, an aftermarket filter will work, but you are accepting a trade-off in precision.

Service intervals and filter lifespan

Mopar recommends changing the oil and filter every 10,000 miles under normal driving conditions. If you tow, drive in dusty conditions, or make frequent short trips, Chrysler suggests 5,000 miles. The filter itself is designed to handle 10,000 miles of normal use without clogging, though the oil inside it degrades faster under stress.

Some 5.7 Hemi owners extend intervals to 7,500 miles as a middle ground, especially if they tow occasionally. Synthetic oil lasts longer than conventional, so if you use full synthetic, you can safely reach 10,000 miles. The filter still needs to be changed at the same interval as the oil — you cannot reuse a filter or extend its life by just topping off the oil.

Installation and what to check

Changing the filter is straightforward: locate the filter head on the engine block, use a filter wrench to unscrew the old filter, wipe the rubber gasket surface clean, and thread the new Mopar filter on by hand until the gasket contacts the head, then turn it an additional three-quarter turn. Do not over-tighten, as this can damage the gasket and cause leaks.

After installation, start the engine and let it idle for 30 seconds, then check the filter for leaks. The oil pressure light should go out within a few seconds as the new filter fills with oil. If the light stays on or you see oil dripping from the filter, shut off the engine and check that the filter is tight. A small amount of oil residue around the base is normal during the first few minutes of running.

Identifying your specific 5.7 Hemi year and process

The 5.7 Hemi has been produced since 2003 and appears in many Chrysler, Dodge, and Jeep models. The Mopar filter part numbers 68157291AA and 68157291AB cover all 5.7 Hemi engines from 2003 onward, regardless of whether the engine is in a Ram truck, Charger, Grand Cherokee, or 300. You do not need to look up your specific year or model — the part number is universal for the engine.

If you are unsure whether your engine is a 5.7 Hemi, check your owner's manual or the engine cover under the hood. The 5.7 Hemi is badged clearly on the valve cover. If you have a different displacement engine — such as a 5.9 Magnum, 6.4 Hemi, or 6.2 Hemi — you will need a different filter, so confirm your engine size before ordering.

Frequently Asked Questions

Can I use a Fram or Motorcraft filter instead of Mopar?

Yes, they will thread on and the engine will run. However, they are not designed to Chrysler's specifications for the 5.7 Hemi. The bypass valve pressure and flow rate differ, which can affect oil pressure readings and filter life. Mopar filters are inexpensive enough that most owners stick with them to match the factory design.

How often do I need to change the filter?

Every 10,000 miles under normal driving, or every 5,000 miles if you tow, drive in dusty conditions, or make frequent short trips. The filter must be changed whenever you change the oil — you cannot extend the filter's life by just topping off the oil.

What if I cannot find the Mopar part numbers locally?

Order online from RockAuto, Amazon, or Walmart — they stock Mopar filters and ship quickly. A Chrysler, Dodge, or Jeep dealership can also order the filter and have it in one to two days. The part numbers are common and widely available, so you should not have trouble finding them.

Do I need any special tools to change the filter?

A spin-on filter wrench makes removal easier, but you can unscrew the old filter by hand if you wrap a rag around it for grip. You do not need any other tools. Installation is done by hand — just thread the new filter on until the gasket contacts the head, then turn it three-quarter turn more.

Will using the wrong filter damage my engine?

Not when ready, but over time it can affect oil pressure readings and allow the filter to clog faster, especially under stress. The 5.7 Hemi's oil system is engineered around the Mopar filter's specifications, so using the correct filter ensures the system works as designed.