- This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
- New stock is on the way! On order parts usually ship within 7 business days.
- Item is not in stock and usually ships 10-15 business days from the time you place your order.
- This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
Lawn Mower Key Square 21553MA
- Manufactured by:
- Murray
- ERP Number:
- ERP11831398
- Part Number:
- 21553MA
Does this part fit my model?
Need help finding your model number?Troubleshooting
- Murray
- Briggs and Stratton
- Simplicity
- Snapper
- Craftsman
- Lawn Tractor
- Lawn Mower
- Lawn Tractor Accessories
- Snow Blower
Customer Repair Instructions
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
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Missing square key on the left back axle/wheel (that enables the tractor to drive).
Greg from Florence, Alabama
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Pliers
- Parts Used:
- 21553MA
Key way lost when patching flat tire
Nathan from Murfreesboro, Tennessee
- Difficulty Level:
- Easy
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Pliers, Screw drivers, Wrench set
- Parts Used:
- 21553MA
Transmission key broke on the tire
MARDO from SPRINGDALE, Arkansas
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Socket set
- Parts Used:
- 21553MA
Remove the wheel
Place the key in the key slot
Replace the wheel
Replace the washers
Tighten the nut
Lost part when I took off the wheel
Robert from LYNCHBURG, Virginia
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Screw drivers
- Parts Used:
- 21553MA
rear wheels would not move causing the Lawn Tractor to stay stationary. Evidently the Square Key had slipped out during a tire repair.
CHARLES from BULVERDE, Texas
- Difficulty Level:
- Easy
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Screw drivers
- Parts Used:
- 21553MA
Missing hardware.
Chris from Olean , New York
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Model Cross Reference
Manufacturer Part Number: 21553MA
| Brand | Model Number | Description |
|---|---|---|
| Briggs and Stratton | 107250040 | Lawn Tractor Accessories - 107.250040 - 2691085-00, Ctx9000, 20hp, 42" Mower Deck (2012) |
| Craftsman | 130280110 | Lawn Mower - Craftsman Lawn Mower Model 130.280110 (130280110, 130 280110) Parts |
| Craftsman | 130280111 | Lawn Mower - Craftsman Lawn Mower Model 130.280111 (130280111, 130 280111) Parts |
| Craftsman | 130280120 | Lawn Mower - Craftsman Lawn Mower Model 130.280120 (130280120, 130 280120) Parts |
| Craftsman | 130280121 | Lawn Mower - Craftsman Lawn Mower Model 130.280121 (130280121, 130 280121) Parts |
| Simplicity | 1615HC | Lawn Mower - Simplicity Lawn Mower Model 1615HC Parts |
| Simplicity | 1617HC | Lawn Mower - Simplicity Lawn Mower Model 1617HC Parts |
| Simplicity | 1693074 | Lawn Tractor - Regent, 14Hp Gear |
| Simplicity | 1693075 | Lawn Tractor - Regent, 14Hp Gear And 38In Mow |
| Simplicity | 1693076 | Lawn Tractor - Regent, 14Hp Gear (Ceexport) |
| Simplicity | 1693077 | Lawn Tractor - Regent, 14Hp Gear (Ceexport) T |
| Simplicity | 1693080 | Lawn Tractor - Regent, 14Hp Hydro |
| Simplicity | 1693081 | Lawn Tractor - Regent, 14Hp Hydro And 38In Mo |
| Simplicity | 1693082 | Lawn Tractor - Regent, 14Hp Hydro (Ceexport) |
| Simplicity | 1693083 | Lawn Tractor - Regent, 14Hp Hydro (Ceexport) |
| Simplicity | 1693084 | Lawn Tractor - Regent, 16Hp Gear |
| Simplicity | 1693085 | Lawn Tractor - Regent, 16Hp Gear And 44In Mow |
| Simplicity | 1693086 | Lawn Tractor - Regent, 16Hp Gear (Ceexport) |
| Simplicity | 1693087 | Lawn Tractor - Regent, 16Hp Gear (Ceexport) T |
| Simplicity | 1693088 | Lawn Tractor - Regent, 16Hp Hydro |
| Simplicity | 1693089 | Lawn Tractor - Regent, 16Hp Hydro And 44In Mo |
| Simplicity | 1693090 | Lawn Tractor - Regent, 16Hp Hydro (Ceexport) |
| Simplicity | 1693091 | Lawn Tractor - Regent, 16Hp Hydro (Ceexport) |
| Simplicity | 1693092 | Lawn Tractor - 514G, 14Hp Gear |
| Simplicity | 1693093 | Lawn Tractor - 514G, 14Hp Gear And 38In Mower |
| Simplicity | 1693094 | Lawn Tractor - 514H, 14Hp Hydro |
| Simplicity | 1693095 | Lawn Tractor - 514H, 14Hp Hydro And 38In Mowe |
| Simplicity | 1693098 | Lawn Tractor - 516H, 16Hp Hydro |
| Simplicity | 1693099 | Lawn Tractor - 516H, 16Hp Hydro And 44In Mowe |
| Simplicity | 1693100 | Lawn Tractor - 2514G, 14Hp Gear |
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.