The part may look the same on the outside, but it's trueness to factory dimensions, carbon content/alloy steel and heat-treating may be very different. Our engineers specify a very precise mix of all elements to make our blades the absolute strongest they can be.
John Deere prides itself on "the" best parts distribution system in the industry. If your local dealer does not have the part you need, John Deere can generally provide 24-hour delivery to your local dealer.

Actually, no. Filter components can vary greatly. John Deere part suppliers have access to John Deere engineering drawings, which specify the exact measurements and elements for your equipment's best possible protection. Our competitors don't have these engineering drawings. John Deere filters remove fine debris, seal out internal leaks and have higher flow during cold weather start ups.
If you purchase a mower blade that is made by a company other than John Deere for your John Deere equipment, you are taking the risk that the blade will not meet factory specifications. The blade may not be heat treated correctly, it may not have the correct amount of carbon, and it could be brittle and fragment if you hit a hard object.
Don't sacrifice your engine or transmission to parts that "will fit" on your John Deere equipment. There is no assurance that internal components of competitive parts will protect the investment you've made.
Genuine John Deere replacement parts are competitively priced and superior in quality.