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Repair Parts Home  Lawn Equipment Parts  Murray Parts  21553MA Key, Square, 3/16
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Key,​ Square,​ 3/​16

Part Number: 21553MA
MurraySnapperSimplicity
Availability: 2 in stock
Price: $3.99
Ships within 1 business day

*This part replaces obsolete part #: 720258, 1717749SM, 021553MA, 037X63A, 21553 and MU021553MA.

Product Information
Manufacturer: Murray, Snapper, Simplicity
Product Number: 21553MA
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Compatibility

This part is compatible with the following machines:

Murray
7800292 (385002x108C) Lawn Tractor
7800412 (EYK125380) Lawn Tractor
7800303 (425621x108D) Lawn Tractor
7800410 (ELT155420G) Lawn Tractor
7800411 (ELT155420H) Lawn Tractor
7800413 (EYK155420G) Lawn Tractor
7800414 (EYK155420H) Lawn Tractor
7800399 (ELT175460H) Lawn Tractor
7800400 (ELT12460H) Lawn Tractor
7800416 (EYK12460H) Lawn Tractor
7800494 (465624x108A) Lawn Tractor
7800495 (465625x108A) Lawn Tractor
7800272 (312006x11E) Lawn Tractor
7800274 (312006x11E) Lawn Tractor
7800275 (309006x78C) Lawn Tractor
7800276 (385048x114) Lawn Tractor
7800277 (385048x51A) Lawn Tractor
7800294 (385002x78D) Lawn Tractor
7800319 (385048x151) Lawn Tractor
7800278 (405021x114) Lawn Tractor
7800279 (405021x51) Lawn Tractor
7800280 (405628x114) Lawn Tractor
7800281 (405628x51) Lawn Tractor
7800295 (405012x108) Lawn Tractor
7800297 (405012x108) Lawn Tractor
7800300 (405606x78C) Lawn Tractor
7800320 (405021x151) Lawn Tractor
7800321 (405628x151) Lawn Tractor
7800162 (LT155420) Lawn Tractor
7800191 (LT185420) Lawn Tractor
7800282 (425307x51A) Lawn Tractor
7800302 (425017x78B) Lawn Tractor
7800303 (425621x108C) Lawn Tractor
7800304 (425622x78C) Lawn Tractor
7800307 (CLT155420) Lawn Tractor
7800309 (CLT185420) Lawn Tractor
7800361 (LT135420C) Lawn Tractor
7800362 (LT155420C) Lawn Tractor
7800370 (FLT185420) Lawn Tractor
7800192 (LT20460) Lawn Tractor
7800283 (465307x51) Lawn Tractor
7800306 (465624x78B) Lawn Tractor
7800311 (CLT20460) Lawn Tractor
312006x50C Lawn Tractor
385002x108B Lawn Tractor
385003x108 Lawn Tractor
385047x51A Lawn Tractor
405013x50C Lawn Tractor
405020x51A Lawn Tractor
405606x50C Lawn Tractor
405612x108 Lawn Tractor
405627x51A Lawn Tractor
425018x00A 42" Lawn Tractor
425622x50C 42" Lawn Tractor
465617x51A 46" Lawn Tractor
312006x190A (552550) 30" Lawn Tractor
312006x50B-SW 30" Lawn Tractor
312006x78B 30" Lawn Tractor
385002x190A (552544) 38" Lawn Tractor
385002x50B-SW 38" Lawn Tractor
385002x78C 38" Lawn Tractor
385044x51A-SW 38" Lawn Tractor
405013x50B-SW 40" Lawn Tractor
405017x190A (552545) 40" Lawn Tractor
405606x190A (552546) 40" Lawn Tractor
405606x50B-SW 40" Lawn Tractor
405606x78B 40" Lawn Tractor
405607x78A 40" Lawn Tractor
405625x51A-SW 40" Lawn Tractor
425017x190A (552548) 42" Lawn Tractor
425622x50B-SW 42" Lawn Tractor
425622x78B 42" Lawn Tractor
425624x190A (552547) 42" Lawn Tractor
312002x11B 30" Lawn Tractor
312006x50A 30" Lawn Tractor
385000x68B 38" Lawn Tractor
385001x51A 38" Lawn Tractor
385002x108A 38" Lawn Tractor
385002x50A 38" Lawn Tractor
385002x78A 38" Lawn Tractor
385002x78B 38" Lawn Tractor
385002x98A 38" Lawn Tractor
385003x52A 38" Lawn Tractor
385004x52A 38" Lawn Tractor
387002x92C 38" Lawn Tractor
387002x92D 38" Lawn Tractor
405000x8E 40" Lawn Tractor
405000x8F 40" Lawn Tractor
405000x8G 40" Lawn Tractor
405004x99A 40" Lawn Tractor
405011x48A 40" Lawn Tractor
425001x99A 42" Lawn Tractor
425012x31A 42" Lawn Tractor
425014x92B 42" Lawn Tractor
425014x92C 42" Lawn Tractor
425016x48A 42" Lawn Tractor
425017x24A 42" Lawn Tractor
425017x78A 42" Lawn Tractor
425600x48A 42" Lawn Tractor
425604x99C 42" Lawn Tractor
425607x52A 42" Lawn Tractor
425615x99B 42" Lawn Tractor
425621x108A 42" Lawn Tractor
425622x50A 42" Lawn Tractor
425622x78A 42" Lawn Tractor
425624x18A 42" Lawn Tractor
405011X52A 40" Lawn Tractor
405011x92A 40" Lawn Tractor
405011x92B 40" Lawn Tractor
405011x92C 40" Lawn Tractor
405012x108A 40" Lawn Tractor
405013x50A 40" Lawn Tractor
405016x31A 40" Lawn Tractor
405017x78B 40" Lawn Tractor
405605x51A 40" Lawn Tractor
405606x108A 40" Lawn Tractor
405606x50A 40" Lawn Tractor
405606x78A 40" Lawn Tractor
405607x52A 40" Lawn Tractor
425001x8C 42" Lawn Tractor
405017x78A 40" Lawn Tractor
425001x8D 42" Lawn Tractor
425001x8E 42" Lawn Tractor
465306x8B 46" Lawn Tractor
465307x31A 46" Lawn Tractor
465600x48A 46" Lawn Tractor
465624x50A 46" Lawn Tractor
465624x78A 46" Lawn Tractor
465306x8A 46" Lawn Tractor
312002x11A 31" Lawn Tractor
312001x50C 31" Lawn Tractor
312002x98B 31" Lawn Tractor
312003x50B 31" Lawn Tractor
312004x68A 31" Lawn Tractor
385000x68A 38" Lawn Tractor
385011x50C 38" Lawn Tractor
385014x98B 38" Lawn Tractor
385015x50B 38" Lawn Tractor
385015x50C 38" Lawn Tractor
385016x78A 38" Lawn Tractor
385021x53A 38" Lawn Tractor
38516x53D 38" Lawn Tractor
387002x83A 38" Lawn Tractor
387002x92A 38" Lawn Tractor
387002x92NA 38" Lawn Tractor
387003x8A 38" Lawn Tractor
387004x48A 38" Lawn Tractor
405000x31B 40" Lawn Tractor
405000x8C 40" Lawn Tractor
405000x8D 40" Lawn Tractor
Expand the 150+ compatible machines
Products Compatibility

This item works with the following types of products:

  • • Lawn Tractor
Questions & Answers

What is the length of the square key to make the drive engage. I know that the diameter is 3/16.
Gerald Gilkey for model number 40508x92D asked on 2019-04-03
Hi Gerald, Thank you for your question. The length of the key is approximately 2 inches. I hope this helps. Thank you and have a great day!
Repair Instructions: Submitted by Customers Like You
4 of 4 people found this instruction helpful
Tool Type:
Lawn Tractor
Parts Used:
Key, Square, 3/16 - 21553MA
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Pliers
Missing square key on the left back axle/wheel (that enables the tractor to drive).
I recently bought a used Murray Lawn tractor that had a missing square key for the back wheel/axle. I ordered it here with no problems and couldn't be happier. The part was shipped the same day and I was back up running/cutting in no time. With the model specified diagrams, it made it easy to find and order the part. Great job guys/gals!! Keep up the good work. Greg H.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
1 of 1 people found this instruction helpful
Tool Type:
Lawn Tractor
Parts Used:
Key, Square, 3/16 - 21553MA
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Socket set
Transmission key broke on the tire
Remove the nut from the axle
Remove the wheel
Place the key in the key slot
Replace the wheel
Replace the washers
Tighten the nut
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Thanks for voting and helping fellow customers!
Tool Type:
Lawn Tractor
Parts Used:
Key, Square, 3/16 - 21553MA
Washer - 17X195MA
E-Ring - 11X3MA
Hub Cap - 94618MA
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Pliers
Missing hardware.
Replaced the missing parts with the new ones.
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Thanks for voting and helping fellow customers!
0 of 1 people found this instruction helpful
Tool Type:
Lawn Mower
Parts Used:
Key, Square, 3/16 - 21553MA
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Wrench Set, Small jack
Key way lost when patching flat tire
Jack up mower. Removed tire. place key in grove. Put tire back on.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Product Information
Manufacturer: Murray, Snapper, Simplicity
Product Number: 21553MA
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
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