Replace your worn or damaged blade adapter with this high-quality part compatible with popular Husqvarna, Craftsman, and Poulan walk-behind mowers. Designed for a secure blade fit, smooth operation, and extended mower life.

Replaces OEM Part Numbers:

  • Husqvarna: 421782, 532421782, 581473301

  • Craftsman / AYP / Sears: 421782, 532421782

  • Poulan / Poulan Pro: 532421782, 581473301

  • Weed Eater: 532421782

  • Rotary 15991

Compatible With:

  • Husqvarna, Craftsman, and Poulan self-propelled walk-behind mowers

  • Common on 21” and 22” mower decks

  • Compatible with many models built by AYP (American Yard Products), the OEM for these brands

Additional Brand Applications:

  • Weed Eater (also made by AYP)
    Models like WE456, WE550N21RH

  • Rally (another AYP/SEARS brand)
    Older 21" push and self-propelled mowers

  • Lawn-Boy (some models with AYP parts)
    Check bore diameter and deck specs for match

  • AYP/ROPER branded mowers
    Often found under regional/private labels like Southern States, Yard-Pro, etc.

Example Model Compatibility (partial list):

  • Husqvarna: LC221RH, LC221A, LC221FHE

  • Craftsman: 917-series self-propelled mowers (e.g. 917.376551, 917.376552)

  • Poulan Pro: PR625Y22RKP, PR675AWD

Specifications:

  • Bore/Inner Diameter: 25 mm

  • Durable metal construction

  • Designed to mount the blade securely to the crankshaft

Key Benefits:

  • OEM-level fit and performance

  • Reduces vibration for smoother mowing

  • Ensures safe and accurate blade operation

  • Quick, no-hassle installation

Ideal For:
DIYers, homeowners, and repair shops looking for a reliable, cost-effective blade adapter compatible with multiple brands and models.

Application Tips:

  • Confirm your mower uses a 25mm blade adapter

  • Check original part number or measure bore size to ensure proper fit< 

  • Ideal for homeowners, landscapers, and repair techs

How to Confirm Fit:

  • Your current blade adapter has a 25mm (1") inside diameter

  • Mower has a bolt-on blade attachment system

  • Replaces part number: 532421782, 421782, 581473301

Compatibility Chart – 25mm Blade Adapter

Brand Compatible Models (Examples) Deck Size
Husqvarna LC221RH, LC221A, LC221FHE, LC221R, HU700F, HU675AWD 21" / 22"
Craftsman 917.376551, 917.376552, 917.377290, 917.378641, 917.370441 21" / 22"
Poulan Pro PR625Y22RKP, PR675AWD, PR500N21SH, PR625Y22RH 21" / 22"
Weed Eater WE550N21RH, WE456, WE675N22RH, WE96112008300 21" / 22"
Rally 532421782-compatible models by AYP 21" / 22"
AYP / Roper Models using 25mm blade adapters and bolt-on mounting 21" / 22"
Jonsered LM2153, LM2156 AWD, LM2150 21" / 22"
Other Labels Yard-Pro, Eager-1, Southern States (AYP-built) 21" / 22"
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