This is why I say either type of mesh should be okay, even in O.E. The two pictures above however show the rectangular mesh in boxes made from 1964 and newer. The filter above with diamond mesh is most likely the correct type in the 62 to 64 period as many filter manufacturers moved away from the rectangular mesh of the 50's into the diamond mesh more commonly found in 60's filters This 18- series part number indicates the year of origin for this part number is 1958 so you can imagine it was used on some application long before the Max Wedges. The filter above is probably an early version of this part number with the rectangular wire mesh. Here are examples of NOS original Max Wedge air filters. Chances are the originals have changed color as they are pretty old to make comparisons with today. Of the original filters I have seen the paper behind the mesh is more of a vanilla creme to slightly yellowed color where the replacements are a stark white paper, but that's splitting hairs. Either one is correct as I have seen NOS original examples of both in original Mopar part numbered boxes. Original filters however had black rubber with either a rectangular wire mesh or a diamond wire mesh. Back in the day that's what you got as a replacement as Fram was a big aftermarket supplier much like they are still today. That's why most people think the Fram CA170PL is correct. Old Frams have the orange rubber with round hole mesh, much like the original street Hemis and Six Packs. If you find NOS Fram's you will pay a fortune for them as most people think those were the correct type. I believe the going price at the stores is about 15.00 per filter, at least that's what I remember them being last time I bought some. If you get stuck there I have about 24 of them here. I don't think you can get the Fram anymore but the Car Quest and Napa stores have a current offering. You can get this crossed over at stores like Car Quest and Napa to their part number off the Fram number. The original Mopar part number for the Max Wedge air filter element is 1851493 but they were serviced aftermarket by several vendors as well. This is an original 1964 car equipped with 3705 carbs. This is an original 1963 car equipped with 3447 carbs. This air cleaner system is available in reproduction form and is exact in every detail to the original factory air cleaners. Here is a little better detailed picture of what the air cleaners look like. Measure your carbs to be sure you are buying the right type you need. Be sure to ask the seller what his size air cleaner bases are at the carb opening. I only mention this as you need to be aware of this fact when buying air cleaners for the size of carburetors you are using. Here is a factory press release photo that properly shows the difference in the sizes of the bases. The 1963 Stage II and 1964 Stage III Max Wedge engines used the new larger CFM Carter 3705 carburetors which had a larger air horn opening so the steel bases were made to fit the new larger air horn size. The 19 Stage I Max Wedge engines used Carter 3447 carburetors which had the smaller size air horn opening so the steel base was made to fit that specific air horn size. Each air cleaner had a steel base, a filter element and a steel lid. This air cleaner system consisted of two separate air cleaners (one per carb). If your car was a steel front end car it came with air cleaners like standard production cars did. Max Wedge cars had two types of air filtering systems.
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