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The MTD 490-110-0167 is a two-blade replacement set for John Deere 42-inch lawn tractor decks. It cross-references John Deere part numbers GX22151 and GY20850 and uses a 7-point star center hole, so it drops onto decks on D100-D130, LA100-LA135, X110-X145, Z225 and the 102-135 series. It is a straightforward steel mulching-style blade pair rather than an upgrade: cut quality and durability land where OEM blades do, and it suits owners doing routine seasonal blade changes on a 42-inch Deere deck.
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Lowest price we've seen: $54.99 on Nov 10 at Tractor Supply Co. Tracked across 1 store since Nov 10.
Owners of 42-inch John Deere tractors generally report these blades bolt on and cut as expected, and many treat them as a cheaper stand-in for dealer blades. Complaints center on edges dulling faster than OEM and occasional fit or balance issues out of the box.
The MTD 490-110-0167 is a set of two replacement blades for John Deere lawn tractors with 42 in. cutting decks. It replaces John Deere parts GX22151 and GY20850. The blades are made of steel and have a 7-point star centerhole pattern with a 1 in. center hole diameter.
The blades have sharp edges that cut grass cleanly. They are tested for fitment, safety and performance. Blades should be replaced at least once every year.