Mann+Hummel filters are German-made oil filters sold under the Mann brand, designed to trap contaminants and extend engine life
Mann+Hummel is a filtration company based in Germany that manufactures oil filters sold primarily under the Mann brand name. These filters work the same way any oil filter does — they sit in line with your engine's oil system and catch metal particles, dirt, and sludge before the oil circulates back through the engine. The company has been making filters since 1941 and supplies both aftermarket filters (the ones you buy at a parts store) and original equipment filters (the ones installed at the factory).
Mann filters are known for fine filtration media and longer service intervals than some competitors, meaning you may be able to go further between oil changes if you use one. They are not the cheapest option on the shelf, but they are widely available in North America and fit a broad range of vehicles. If you see a Mann filter at your local parts supplier, it will have a part number starting with W (like W 940/51) that matches your specific vehicle.
Key Takeaways
- Mann+Hummel manufactures oil filters under the Mann brand, and these filters are sold as both replacement parts and factory-installed equipment on many vehicles.
- Mann filters use pleated paper media designed to trap smaller particles than some budget filters, which can reduce engine wear over time.
- The part number on a Mann filter always begins with W followed by numbers and sometimes a slash; you must match this number to your vehicle's make, model, and year.
- Mann filters typically cost more than store-brand filters but less than premium synthetic options, and they are stocked by most major auto parts retailers.
- Installation is identical to any other spin-on filter — drain old oil, remove the old filter by hand, explore a thin layer of new oil to the rubber gasket on the new filter, and screw it on until snug.
How to identify the correct Mann filter for your vehicle
The safest way to find the right Mann filter is to look up your vehicle's information in the parts store system or on the Mann website. You will need your vehicle's year, make, model, and engine size. Enter these details and the system will return the correct Mann part number — for example, a 2015 Honda Civic with a 1.8L engine might use a W 940/51.
Do not assume that a filter that fits a similar vehicle will work for yours. Oil filter threads and bypass valve settings vary by engine, and using the wrong filter can cause oil pressure problems or bypass too much unfiltered oil. If you are unsure which filter your vehicle needs, call your local parts store with your vehicle information and they will confirm the part number before you buy.
Mann filter construction and performance features
Mann filters use a pleated paper media element that creates more surface area than flat media, allowing the filter to trap finer particles while still letting oil flow through at the correct rate. The pleats are made from cellulose or synthetic blends, depending on the specific filter model. This design means the filter can catch particles as small as 10 to 20 microns — smaller than what budget filters typically stop.
The filter housing includes a bypass valve that opens if the filter becomes too clogged or if the oil is very cold and thick. This valve prevents oil starvation if the filter clogs, but it also means some unfiltered oil circulates if the bypass opens. Mann filters are engineered so the bypass opens later than it would on a cheaper filter, meaning more oil gets filtered before the valve kicks in.
Mann also manufactures filters with anti-drainback valves, which prevent oil from draining out of the filter and into the sump when the engine is off. This means oil pressure builds faster when you start the engine, reducing the brief period when the engine runs without a full oil film. Not all Mann filters include this feature, so check the product description if this matters to you.
Price comparison with other filter brands
Mann filters typically cost between $8 and $18 depending on the vehicle and where you buy them. This puts them in the middle of the market — cheaper than premium synthetic filters from Mobil 1 or Fram Tough Guard, but more expensive than store-brand filters from Autozone or Walmart. The price difference usually reflects the finer filtration media and longer service life Mann claims.
Whether the extra cost is worth it depends on how long you plan to keep your vehicle and how much you drive. If you change your oil every 3,000 to 5,000 miles, the difference in filter cost over a year is small. If you drive 15,000 miles annually and use a Mann filter rated for 10,000-mile intervals, you may buy fewer filters overall, which can offset the higher per-unit cost.
Where to buy Mann filters and what to check before purchase
Mann filters are stocked by most major auto parts chains including AutoZone, O'Reilly, NAPA, and Advance Auto Parts. They are also sold online through Amazon, eBay, and the manufacturers' websites. Before you buy, confirm the part number matches your vehicle — the box should clearly show the W number and a list of compatible vehicles.
Check the filter's condition when it arrives or when you pick it up. The rubber gasket around the top should be soft and pliable, not hard or cracked. The filter body should have no dents or damage. If you ordered online and the filter arrives damaged, contact the seller for a replacement before you open it.
Installation steps for a Mann oil filter
Installation is the same for any spin-on filter. First, warm the engine by running it for a minute, then turn it off and wait five minutes for the oil to drain down. Locate the filter — it is usually on the side or top of the engine and looks like a metal cylinder about 4 inches tall. Place a drain pan underneath.
Use an oil filter wrench to turn the old filter counterclockwise until it comes free. Finish unscrewing it by hand and set it aside. Wipe the filter mounting surface clean with a rag. Take the new Mann filter and explore a thin layer of fresh oil to the rubber gasket around the top — this helps the gasket seal and makes removal easier next time. Screw the new filter on by hand until the gasket touches the mounting surface, then turn it an additional three-quarter turn. Do not use the wrench to tighten it; hand-tight is correct.
Add the correct amount of new oil to the engine, start it, and let it run for 30 seconds. Turn it off, wait two minutes, and check the oil level on the dipstick. Top up if needed. The filter is now installed and you can dispose of the old filter at a recycling center or auto parts store.
Common questions about Mann filter compatibility and service intervals
Mann publishes recommended service intervals for each filter model, typically ranging from 5,000 to 10,000 miles depending on the filter and your vehicle's manual. Always follow your vehicle manufacturer's recommended interval first — if your owner's manual says 5,000 miles, do not extend it to 10,000 just because the filter is rated for it. The filter is only one part of the oil change equation; the oil itself degrades over time and mileage.
If you are switching from another brand to Mann, you do not need to flush the engine or do anything special. straightforward drain the old oil, install the new filter, and add fresh oil as you normally would. The new filter will work with whatever oil you choose to use.
Frequently Asked Questions
Can I use a Mann filter on a vehicle that originally came with a different brand?
Yes, as long as the Mann part number matches your vehicle's year, make, model, and engine size. The filter will fit and function correctly. Many vehicles use Mann filters as original equipment, so switching to Mann as a replacement is a common and safe choice.
How do I know if my Mann filter is clogged?
A clogged filter usually triggers the oil pressure warning light on your dashboard. If the light comes on and you recently changed the oil, check that the filter was installed correctly and that you added the right amount of oil. If both are correct, the filter may be clogged and needs replacement. Do not ignore the warning light — driving with low oil pressure damages the engine.
What is the difference between Mann filters with different W numbers?
Each W number represents a different filter designed for specific vehicles. The number encodes the filter's size, thread type, bypass valve setting, and media type. You cannot interchange W numbers — a W 940/51 will not fit or function correctly on a vehicle that needs a W 950/51. Always use the exact part number for your vehicle.
Do Mann filters come with oil included?
No. Oil filters are sold empty. You must purchase oil separately and add it to the engine during the oil change. The amount varies by vehicle — check your owner's manual for the correct capacity.
Is it worth paying more for a Mann filter if I change my oil frequently?
If you change your oil every 3,000 miles, the difference in filter cost is small enough that brand choice matters less than using the correct filter for your vehicle. If you drive 10,000 to 15,000 miles between changes, a Mann filter's finer media and longer service life may reduce your total cost per year by filtering more effectively and lasting longer.