UDC Parts 42-inch Mulching Blades for Craftsman 532134149 — 2-Pack Pre-Sharpened, OEM-Style Fit

High-quality UDC Parts 532134149 replacement mulching blades deliver a precise, pre-sharpened cut for 42-inch Craftsman and compatible mower decks.

These two replacement blades from UDC Parts are designed to match the dimensions and mounting pattern of many 42-inch mower decks from Craftsman, Husqvarna, Poulan and other makes. Each blade ships pre-sharpened with a safety coating that naturally wears off during initial use. They’re built to the OEM-style measurements — 21" length (diagonal), 2-1/4" width, five-point star center hole and Air Lift spacing — so they fit a broad range of model numbers listed by manufacturers.

Will these blades fit my mower model?

Compatibility depends on the blade shape, center hole pattern and the deck configuration. These UDC Parts replacements match several Craftsman, Husqvarna and Poulan part numbers, but you should verify the full model and part numbers on your mower before ordering.

• Fits 42" decks with five-point star center and Air Lift 1-5/64" spacing.
• Replaces OEM numbers including 532134149, 134149, 532138971, 138971 and others.
• Compatible with many Craftsman LT, YT, YS, YTS, DLT and Husqvarna YTH series models listed in the product features.
• Confirm your mower's complete model number to avoid fitment issues.

How do these blades improve cutting and mulching performance?

The blades are shaped and balanced to provide even airflow and consistent grass recutting for better mulching. The pre-sharpened edge produces a clean cut initially and can be re-sharpened when needed to maintain effective mulching.

• Pre-sharpened cutting edge reduces initial setup time.
• Balanced design minimizes vibration and improves deck airflow.
• Durable steel construction maintains edge integrity under normal use.
• Safety coating protects the blade during storage and initial operation.

What are the measurements and how do they matter?

Knowing the exact blade dimensions ensures the replacement will mount and operate correctly inside the mower deck. These blades follow OEM-style specs so they align with the cutting path and hardware of many 42" decks.

• Overall diagonal length: 21" (measured tip-to-tip).
• Blade width: 2-1/4"; cutting edge length: 7-1/16".
• Center hole: five-point star; Air Lift gap: 1-5/64".
• Intended for 42" compatible decks; measure your existing blade if unsure.

How should I install and maintain these replacement blades?

Installation follows standard mower blade replacement steps: lift and secure the mower, remove the old blades, match orientation, and torque the blade bolts to the manufacturer’s spec. Regular inspection and sharpening keep performance consistent and extend blade life.

• Always disconnect spark plug and stabilize mower before working beneath the deck.
• Match blade orientation to the original and use correct bolt torque per mower manual.
• Inspect for bends or chips after impacts; replace if damaged rather than attempting repair.
• Sharpen the edge periodically to maintain a clean cut and efficient mulching.

Who is this for? UDC Parts 532134149 42" mulching blades are intended for homeowners and landscapers who need a cost-effective pair of OEM-style replacement blades for Craftsman, Husqvarna, and Poulan 42-inch mowing decks. They’re best for users who verify compatibility with their mower’s full model number and want pre-sharpened, balanced blades built to the correct dimensions for reliable mulching and cutting performance.