Don't compromise with lower quality substitutes. Buy genuine replacement parts for your trailer jacks, and maintain the highest safety standards.

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Part #: 500251 Bulldog Replacement Bearing Kit - 500251
Bearing kit for 2,000 lb. capacity Bulldog series 150 trailer jacks.
Your Price
$6.96
List Price
$8.10
You Save
$1.14
Part #: 500223 Bulldog Replacement Thrust Bearing Kit - 500223
Thrust Bearing for 5,000 lb. capacity Bulldog series 170 and Crown 5,000 lbs. trailer jacks.
Your Price
$9.90
List Price
$11.52
You Save
$1.62
Part #: 500224 Bulldog Replacement Thrust Bearing Kit - 500224
Thrust Bearing for 8,000 lb. capacity Bulldog series 190 and Crown 7,000 lbs. trailer jacks.
Your Price
$11.73
List Price
$13.65
You Save
$1.92
Part #: 500106 Bulldog Replacement Sidewind Bevel Gear Kit - 500106
Rebuild your trailer jack with a replacement sidewind bevel gear kit from Bulldog. Designed for 800 lbs., 1,000 lbs. and 5,000 lbs. Bulldog trailer jacks.
Your Price
$10.04
List Price
$11.69
You Save
$1.65
Part #: 500156 Bulldog Replacement Sidewind Bevel Gear Kit - 500156
Replace the bevel gears of your 7,000 pound Bulldog sidewind trailer jack with genuine Bulldog replacement parts.
Your Price
$11.76
List Price
$13.68
You Save
$1.92
Part #: 5002581360 Bulldog Replacement Sidewind Gear Kit - 5002581360
Sidewind gear kit for Bulldog series 190 and Crown 7,000 lbs. trailer jacks with 5/8 inch I.D. bottom gear.
Your Price
$12.60
List Price
$15.82
You Save
$3.22
Part #: 800144 Bulldog Series 180 Service Kit - 800144
Bulldog Service kit contains the sidewind crank (10.50 inch), bearing, gears, pins and bushing for 10,000 lbs. capacity 180 series sidewind trailer jacks.
Your Price
$35.74
List Price
$48.59
You Save
$12.85
Part #: 500285 Bulldog Sun Gear and Stub Shaft Assembly - 500285
Bulldog Sun gear and stub shaft assembly includes the bushings and is designed for 12,000 lbs. capacity two speed planetary gear box trailer jacks.
Your Price
$36.37
List Price
$53.96
You Save
$17.59