I have not found a washable air filter for a Mahindra Max.
But if you go to link below you can get two air filtersfor the price of one filter from a Mahindra dealer.
The Kubota filters sealing foam on each end of the filter is about a 1/16" more, and stacks up to about 1/8 of an inch longer in overall dimension than the Mahindra filter.
Works fine. I am all for buying something that works if it is half the price and still is equal in quality!