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MTD Gear Case Parts for NEWER models  (scroll down for older models)
Reference # in
diagram
Replaces MTD #
Order
 
    684-0158, 984-0158 Impeller
684-0158 Impeller
$59.99
 
684-04057, 68404057A
684-0637, 6840637A
684-04057 Impeller
$69.99
1
    618-0124, 618-0124A     Housing LH
    918-0124, 918-0124A    includes
    bushing
    618-0058, 918-0058      and oil seal
    719-0320, 919-0320
    719-04292, 919-04292
    618-0418, 918-0418
LH Housing 618-0124
$39.99
2
    618-0123      Housing RH
    618-0123A    includes bushing
    618-0059      and oil seal
    719-0319
    719-04291
RH Housing 618-0123
$39.99
3
    710-0642, 910-0642  
    Bolts
Housing Bolt 710-0642
$2.99
5
    714-0161, 914-0161      
    Key
Key 714-0161
$6.50
6
    715-0143, 915-0143
    Pin with hollow center
715-0143 Shaft Pin
$4.25
 
    715-04021, 915-04021
    Pin with hard center
Pin 715-04021
$4.50
7
    717-04449, 917-04449
    717-0528, 717-0528A
    917-0528, 917-0528A
    Brass Worm Gear
717-0528A Worm Gear MTD
$49.99
8
    717-0526, 917-0526
    Worm Shaft with splined end
Splined end Worm Shaft 717-0526
$64.99
 
    717-04126, 917-04126   
    Worm Shaft with flat end
Flat end Worm Shaft 917-04126
$58.99
 
    717-3320, 917-3320
    Worm Shaft for Tractor Mounted
    Snowblowers
717-3320 Shaft
$94.99
9
    718-04071    Thrust Collar
                              OD: 1 1/2"  ID: 3/4"
Height: 5/8"
Thrust Collar 718-04071
$6.99
 
    718-0186     Thrust Collar OD: 1 1/2"  
                              ID: 3/4"  Height: 7/16"
Thrust Collar 718-0186
$7.50
10
    721-0325      Plug
Housing Plug 721-0325
$2.99
11
    721-0327      Oil Seal
Oil Seal 721-0327
$6.99
12
    736-0351      Washer
Washer 736-0351
$2.99
13
    736-0369      Washer
Washer 736-0369
$2.99
14
    736-0445      Washer
Washer 736-0445
$2.99
 
    736-3084      Washer
Washer 736-3084
$4.99
15
    741-0662      Bushing
Bushing 741-0662
$6.99
16
    741-0663      Bushing
Bushing 741-0663
$7.99
17
    741-0661      Bushing
Bushing 741-0661
$7.50
18
    721-0179, 921-0338      Oil Seal
Oil Seal 721-0179
$7.99
 
    721-0327      Oil Seal
Oil Seal 721-0327
$6.99
 
    721-0338      Oil Seal
Oil Seal 721-0338
$5.99
837-0168, 727-0111, 727-0149, 737-0122
737-0124, 737-0129 737-0157, 737-0168
737-0168A
Grease
4.5 oz Grease Tube
$12.99
     

MTD Gear Case Parts for OLDER models  (scroll up for newer models)
Reference # in
diagram
Replaces MTD #
Order
37
717-0297   Left Case Half
753-0889

(now comes as a kit, both halves)
Gear Box Housing Kit (both halves) 753-0889
$139.99
46
741-0192   bushing
741-0192 / 741-0170 Wheel Bushing MTD
$7.99
50
710-0891   shear bolt
710-0891 Shear Bolt
$2.99
51
721-0146   oil seal
721-0146 Oil Seal MTD
$6.99
53
741-0182   bushing
Bushing 741-0182 (NLA)
54
736-0266   washer
Washer 736-0266
$8.99
55
717-0300   worm gear
971-0300
717-1425
917-1425
717-0300 Worm Gear MTD
$37.99
56
741-0184   thrust bearing
741-0184 Needle Bearing MTD
$15.99
57
736-0291   washer
Washer 736-0291
$6.99
58
717-0299   worm gear
917-0299 Worm Gear MTD
$42.99
59
741-0217   bushing
741-0217 Bushing MTD
$8.99
60
717-0298   Right Hand Case Half

(now comes as a kit, both halves)
Gear Box Housing Kit (both halves) 753-0889
$139.99
61
710-0376   bolt
710-3008
Bolt 710-3008
$3.99
62
721-0144   gasket
721-0144 / 921-0144 Gear Case Gasket MTD
$6.99
63
721-0145   oil seal
721-0145 Oil Seal MTD
$4.99
64
714-0126   woodruff key
714-0126 Woodruff Key
$3.99
66
714-0135   woodruff key
Woodruff Key
$3.50
77
736-0291   washer
Washer 736-0291
$6.99
837-0168, 727-0111, 727-0149, 737-0122
737-0124, 737-0129 737-0157, 737-0168
737-0168A
Grease
4.5 oz Grease Tube
$12.99