Description
6 Leaf 29 1/2″ x 2 Slipper Spring for 8000 lb Axles

The MLA-161-00 slipper spring from AxleTechnologies is a robust and reliable suspension solution designed specifically for trailers with 8000 lb axles. This six leaf slipper spring provides superior support, ensuring smooth operation and longevity under demanding conditions.
6 Leaf 29 1/2″ x 2 Slipper Spring for 8000 lb Axles Features
- Number of Leaves: 6 leaves provide enhanced support and durability.
- Width: 2.00 inches for optimal fit and performance.
- Steel Thickness: .401 inch ensures strength and reliability.
- Free Length (C): 29.50 inches to accommodate various trailer designs.
- Length (A) & Length (B): 14.13 inches and 16.53 inches for balanced load distribution.
- Arch (H): 3.50 inches offers the right amount of arch for effective suspension.
- Bushing ID: 9/16 inch ensures proper installation and secure fit.
6 Leaf 29 1/2″ x 2 Slipper Spring for 8000 lb Axles Specs
Number of Leaves: | 6 leaves |
Width: | 2.00 inches |
Steel Thickness: | .401 inch |
Free Length (C): | 29.50 inches |
Length (A) & Length (B): | 14.13 inches and 16.53 inches |
Arch (H): | 3.50 inches |
Capacity: | 4,000 lbs. each |
Bushing ID: | 9/16 inch |
Automann Number: | UHC29506 |
Dexter Number: | 4361-40 |
Dayton Number: | US-3084 |
Rockwell Number: | 4361-40 |
TRP Parts: | 4361-40 |
MPN: | UNA-161 |
6 Leaf 29 1/2″ x 2 Slipper Spring for 8000 lb Axles Use Cases
This slipper spring is ideal for various types of heavy-duty trailers, including cargo trucks, flatbeds, and utility vehicles. It ensures smooth operation and reliable performance in demanding conditions.
Types of Trailers
- Cargo Trucks
- Flatbeds
- Utility Vehicles
How to Know if You Need to Replace Your 6 Leaf 29 1/2″ x 2 Slipper Spring for 8000 lb Axles
Symptoms of worn-out leaf springs include excessive bounce, uneven tire wear, and unusual noises when driving. Regular inspection can help identify these issues early.
How to Replace the Slipper Spring
- Lift the trailer onto a secure jack stand or lift.
- Remove any bolts securing the old spring to the axle using an appropriate wrench.
- Slide out the old slipper spring and replace it with the new UNA-161 slipper spring.
- Align the new spring properly, ensuring all leaves are evenly distributed.
- Tighten the bolts securely but do not over-tighten to avoid damaging the bushings or axle.
How to Maintain Your 6 Leaf 29 1/2″ x 2 Slipper Spring for 8000 lb Axles
- Lubricate the spring bushings regularly: Use a high-quality lubricant to reduce friction and wear.
- Inspect for signs of wear or corrosion at least once a year: Look for any cracks, bends, or rust on the leaves.
- Avoid overloading your trailer: This can cause undue stress on the suspension system and lead to premature failure.
- Keep the area around the springs clean and free from debris: Regular cleaning helps prevent corrosion and extends the life of the spring.
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