Mulching Blades Replacement M170642 for John Deere 42in - Twin Pack

In this review the focus is on a practical replacement option for owners of 42in John Deere riding mowers and Z Trak zero turn models. The twin-pack of OEM part number M170642 blades aims to restore cutting performance and mulching ability without needless complexity. For anyone who wants a direct-fit replacement that promises material strength and a sharper edge, this review explains how these blades perform on X3xx and Z3xx machines, and why they are a straightforward buy for routine blade maintenance.

Key Features

• OEM fit: Includes two blades with part number M170642 to match the original specification for compatible John Deere 42in decks, making installation straightforward.
• Material composition: Constructed with boron, carbon and manganese elements to provide toughness and resistance to wear for longer cutting life.
• Mulching design: The blade shape and edge profile improve mulching ability so clippings are cut finer and disperse more evenly back into the turf.
• Quality control: Each blade set undergoes inspection before leaving the factory, which reduces the chance of defects on arrival and simplifies replacement decisions.
• Broad compatibility: Fits several 42in John Deere models including X330, X350, X354, X370, X380 and a range of Z Trak zero turn mowers.

Who It's For

These blades are aimed at homeowners and small-property caretakers who already own one of the supported John Deere 42in decks and want a reliable, OEM-numbered replacement to restore cut quality. If your mower has lost sharpness or you want improved mulching performance without altering deck geometry, this twin-pack is a convenient option.

Owners of non-42in decks or mowers from other manufacturers should look for blades specific to their deck size and mounting. Also, if you require specialty hardened or aftermarket designs beyond the OEM profile, consider blades marketed for heavy commercial use instead.

Pros & Cons

Pros

• Good fit to the specified John Deere 42in models, which makes installation quick and predictable.
• Material mix with boron and manganese improves edge retention compared with basic steel blades.
• Customers report improved cut and mulching performance, noting a cleaner, smoother finish.

Cons

• Compatibility is limited to specified 42in John Deere models, so buyers must double check fitment to avoid returns.
• Not marketed as a commercial heavy-duty blade, so users with extremely abrasive conditions may prefer specialized aftermarket options.

Specifications

Brand	Luojiedejinbiao
OEM Part Number	M170642
Alternate Number	UC22008
Includes	2 PCS M170642 blades
Fitment	John Deere 42in riding and Z Trak models (see product list)
Materials	Steel alloy containing boron, carbon, manganese

Our Verdict

The M170642 twin-pack is a sensible, value-minded replacement for owners of John Deere 42in decks who want to restore sharpness and enhance mulching without fuss. It offers OEM-numbered fitment, durable alloy construction and the practical benefit of two blades per purchase, making it a good routine maintenance buy for homeowners and light commercial users who run compatible X3xx and Z3xx machines.

Frequently Asked Questions

Will these blades fit my mower?
They fit specified John Deere 42in models listed in the product details; confirm your mower model matches one of the supported X3xx or Z3xx variants before buying.

Are these blades a true OEM replacement?
The blades are supplied with OEM part number M170642 and UC22008 specified, intended as direct-fit replacements that match the original specification.

How durable are the blades?
Made with boron, carbon and manganese in the steel mix, the blades are built for improved strength and edge retention compared with basic blades, though extreme commercial use may require heavier-duty options.