TENGMUJX 42" Deck Mower Blades for Toro TimeCutter & Exmark Quest — 42" Replacement, Hardened Steel Rust-Resistant

High-strength 42" deck mower blades by TENGMUJX engineered to replace OEM Toro 137-1999-03 and restore cutting performance on compatible Toro TimeCutter and Exmark Quest decks.

These aftermarket blades are sized and drilled to match common 42-inch decks used on zero-turn and upright mowers, offering a cost-effective way to refresh cutting quality without buying OEM parts. Built from hardened steel and finished for rust resistance, they replicate the critical dimensions of the original Toro/Exmark blades so mounting and blade balance remain consistent.

Will these blades fit my Toro TimeCutter or Exmark Quest deck?

Yes — the blades are manufactured to the same overall size and hole diameter as the listed OEM part. They are compatible with a range of TimeCutter models and Exmark Quest E-Series machines that use a 42-inch deck and the same center hole specification.

• Fits Toro TimeCutter SS 4225, SS 4200, SW 4200, MX 4275, 4275C, 4225, 4200C
• Compatible with Exmark Quest E-Series QZE452CEM42100 and QZE725GKC42200 (42" decks)
• Replaces OEM numbers like Toro 137-1999-03 and related Exmark parts
• Confirm your deck uses a 5/8" center hole before ordering

What are the exact blade dimensions and how do they affect cutting?

The TENGMUJX blades follow the same length, width and thickness used by the OEM, which helps preserve deck balance and cutting geometry. Correct dimensions help maintain consistent lift and discharge patterns for even clippings and reduced scalping.

• Blade length: 21 1/2" (each half of a full 42" set)
• Blade width: 2 7/8" for optimal air lift
• Blade thickness: 0.177" for strength and edge retention
• Center hole: 5/8" to match standard spindle hardware

How do these blades perform and how long will they last?

TENGMUJX blades are heat-treated and ground to provide a durable cutting edge and resistance to wear. Lifespan depends on mowing conditions — rocky or sandy ground shortens edge life — but correct installation and regular sharpening will extend service intervals.

• Hardened steel construction for improved edge life
• Balanced manufacturing minimizes vibration and wear
• Finish helps resist corrosion between uses
• Sharpen as needed to maintain a clean cut and reduce grass tearing

How easy is installation and what should I check during replacement?

Installation is straightforward for anyone comfortable with basic mower maintenance; blades mount using the same bolts and spacers as the OEM parts. Always follow safety steps like disconnecting spark plugs and supporting the deck before working under the machine.

• Disconnect spark plug and secure mower before lifting
• Install each blade with the cutting edge facing forward and correct orientation
• Torque fasteners to your mower manufacturer’s specification
• Check balance and clearances after installation

Who is this for: Homeowners and landscapers with 42-inch Toro TimeCutter or Exmark Quest decks who want a reliable, budget-friendly replacement for OEM 137-1999-03 blades. If you repair machines yourself or run a small fleet and need consistent, properly sized blades that install without modification, these TENGMUJX blades are made to meet those needs while keeping mower balance and cut quality intact.