The M1-110A is a Mopar spin-on oil filter that fits Chrysler, Dodge, and Jeep vehicles from the 1980s through early 2000s

The M1-110A is a Mopar original equipment manufacturer (OEM) oil filter sold under the Mopar brand, which is Stellantis's parts division for Chrysler, Dodge, and Jeep vehicles. It is a spin-on canister filter — the kind you twist off and on by hand — and was commonly installed on mid-size and full-size trucks, vans, and SUVs during its production years. The filter is no longer in current production, but remains available through parts suppliers and is still used in vehicles that have not been retired.

Because the M1-110A is an older specification, you should verify your vehicle's year, engine size, and model before ordering it. Mopar filters changed part numbers frequently as engines were redesigned, and installing the wrong filter can result in poor oil flow, leaks, or damage to the engine. The best way to confirm fit is to check your owner's manual or contact a Mopar dealer with your vehicle identification number (VIN).

Key Takeaways

  • The M1-110A is a Mopar spin-on oil filter designed for Chrysler, Dodge, and Jeep vehicles built between the 1980s and early 2000s.
  • You must verify your specific vehicle year, engine displacement, and model before purchasing, because Mopar changed filter part numbers as engines evolved.
  • Your owner's manual or a Mopar dealer can confirm whether the M1-110A is correct for your vehicle using your VIN.
  • Aftermarket filters from major manufacturers often fit the same vehicles and may cost less than OEM Mopar parts.

Which Chrysler, Dodge, and Jeep models used the M1-110A

The M1-110A was installed on a range of Chrysler and Dodge trucks, vans, and SUVs, particularly those with mid-range V6 and V8 engines. Common applications included the Dodge Dakota pickup, Dodge Durango SUV, Chrysler Town & Country minivan, and Jeep Grand Cherokee. However, the filter was not used on all model years or engine options within these vehicle lines — for example, a 1995 Dakota with a 3.9L V6 might use the M1-110A, while a 1995 Dakota with a 5.2L V8 could use a different filter.

The filter was also used on some Dodge Ram trucks and Chrysler full-size vans, but again, only on certain engine and year combinations. Because Mopar redesigned engines and filter housings throughout the 1980s and 1990s, the same vehicle model sold in different years may have used different filters. This is why checking your VIN with a dealer or your manual is essential — guessing based on model name alone can lead to an incorrect purchase.

How to confirm the M1-110A fits your vehicle

The most reliable way to confirm fit is to look up your vehicle's information in your owner's manual under the maintenance or specifications section. The manual will list the correct filter part number for your engine. If you no longer have the manual, you can read one from Mopar's website or from third-party manual archives by entering your VIN.

A second method is to contact a Mopar dealer parts department by phone or online chat and provide your VIN. The dealer can look up the correct filter in their parts catalog in seconds. You do not need to be a customer of that dealer — parts departments answer filter questions from anyone. A third option is to remove the old filter from your vehicle and note the part number printed on it; if the old filter is still readable, that number is the correct replacement.

Do not rely on filter cross-reference charts alone, because they can list multiple filters as compatible when only one is correct for your specific engine. Use the chart as a starting point, then verify with your manual or a dealer before buying.

Aftermarket filters that may fit the same vehicles

If the M1-110A is no longer in stock or is expensive, several major aftermarket manufacturers produce filters that fit the same Chrysler, Dodge, and Jeep vehicles. Fram, Motorcraft, Purolator, and Wix all made filters for these platforms during the same era. An aftermarket filter will often cost less than a Mopar OEM part and perform the same function, provided it is the correct part number for your engine.

To find an aftermarket equivalent, use an online parts catalog or cross-reference tool and enter the M1-110A part number. The tool will show you which Fram, Wix, or Purolator filters are designed to fit the same vehicles. You can then compare prices and availability. Aftermarket filters carry the same spin-on design and thread size as the M1-110A, so installation is identical.

What to check before installing any oil filter

Before you install the M1-110A or any replacement filter, verify that the thread size and diameter match your vehicle's filter housing. The M1-110A uses a standard 3/4-inch-16 thread, which is common on Chrysler and Dodge engines, but some vehicles use different thread sizes. If the filter does not thread on smoothly by hand, do not force it — stop and confirm you have the correct part.

Also check the filter's height and the clearance around your engine bay. Some filters are taller or wider than others, and a filter that is too large can contact the engine block, radiator hose, or other components when you tighten it. If you are unsure about clearance, install the filter hand-tight first, then check for contact before running the engine.

Where to buy the M1-110A and similar filters

The M1-110A is available from Mopar dealers, online parts retailers such as RockAuto and Amazon, and some national auto parts chains. Prices vary; Mopar dealers typically charge more than online retailers, but you can verify fit before buying. Online retailers often offer lower prices but require you to confirm the part number yourself.

If the M1-110A is out of stock, check the availability of aftermarket equivalents at the same retailers. Many online parts sites allow you to filter by vehicle year, make, and model, which can help you find the correct part without entering a part number. Local auto parts stores such as AutoZone and O'Reilly can also order the filter if it is not in stock, though delivery may take several days.

Frequently Asked Questions

Can I use a different Mopar filter if the M1-110A is not available?

Not without confirming fit first. Mopar changed filter part numbers frequently, and using the wrong filter can cause oil flow problems or leaks. Contact a Mopar dealer with your VIN to find the correct alternative, or check your owner's manual for other approved part numbers.

What is the difference between the M1-110A and aftermarket filters?

The M1-110A is an OEM Mopar filter made to Chrysler's original specifications. Aftermarket filters from Fram, Wix, or Purolator are made by independent manufacturers but meet the same industry standards. Both types work, but OEM filters may have tighter tolerances and aftermarket filters often cost less.

How often should I replace the M1-110A?

Most vehicles with the M1-110A should have the filter replaced every 3,000 to 5,000 miles, depending on your owner's manual and driving conditions. Check your manual for the exact interval for your vehicle and engine. Severe driving conditions may require more frequent changes.

Will the M1-110A fit my vehicle if it is the same year and model as my friend's?

Not necessarily. Two vehicles of the same year and model can have different engines, and different engines use different filters. Always verify with your VIN, not just your model name. Your friend's filter may not be correct for your specific engine.

What happens if I install the wrong filter?

An incorrect filter can cause low oil pressure, leaks at the housing, or inadequate oil flow to the engine. In severe cases, this can damage the engine. If you realize you have installed the wrong filter, stop driving and replace it with the correct part before running the engine again.