




🛠️ Keep your rig rolling with Bulldog’s ultimate plunger kit—because downtime is not an option!
The Bulldog 500177 Trailer Jack Plunger Kit is a genuine replacement accessory designed exclusively for Bulldog 180 Series square jacks. Featuring a 3/4-inch diameter plunger, spring, washer, and cotter pin, this heavy-duty kit ensures reliable, long-lasting performance and perfect fitment. Backed by a 5-year limited warranty, it guarantees durability and peace of mind for professional-grade trailer maintenance.


| Manufacturer | Bulldog |
| Brand | Bulldog |
| Model | BULLDOG 500177 Trailer Jack Internal Mechanism |
| Item Weight | 1.43 pounds |
| Product Dimensions | 6 x 1.75 x 10 inches |
| Item model number | 500177 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 500177 |
| Position | Center |
R**8
Quality product
Fit perfectly. Easy installation
C**C
Sturdy
Sturdy
T**A
works great.
cheaper than buying a whole new jack.
R**B
Perfect
Fit perfect. Better than buying a whole new jack!
Trustpilot
3 weeks ago
3 days ago