OZISENS Trailer Axle Equalizer & Shackle Kit 256L for 3500–5200 lb Axles — Black Oxidized, Complete Hardware

OZISENS Trailer Axle Equalizer 256L Shackle Kit is a complete replacement set engineered to restore smooth tandem-axle suspension function for 3,500–5,200 lb trailer axles.

This all-in-one kit supplies the equalizers, shackle straps, bolts, self-locking nuts and nylon bushings needed to repair or upgrade double-eye spring tandem suspensions. Parts are black-oxidized and painted for corrosion resistance and built to resist wear and deformation under normal towing loads. The set includes measurement details so you can verify fitment before ordering.

How do I know this kit fits my trailer axle?

Confirm compatibility by comparing your trailer’s axle rating and the physical dimensions of the supplied parts. The kit suits trailer axles rated between 3,500 and 5,200 pounds and is designed for double-eye leaf spring tandem setups.

• Fits axle load range: 3,500–5,200 lb
• Equalizer length: 7-3/4 inches (2 pieces)
• Shackle strap length: 4.4 inches with 2-9/16 inch hole spacing (8 pieces)
• Confirm your spring and hanger dimensions match before purchase

What components are included and why does that matter?

The kit contains every fastener and bushing needed for a full swap, so you don’t need to hunt for matching hardware. Having matched parts reduces installation time and avoids mismatched bushings that can accelerate wear.

• 2 equalizers (EQ-E1) for tandem axle balance
• 8 shackle straps for both springs on two axles
• 14 bolts with 14 self-locking nuts for secure assembly
• 14 nylon bushings (9/16" I.D., 11/16" O.D.) to dampen metal-to-metal contact

What materials and finish are used, and how durable are they?

Parts are made from high-strength steel, black-oxidized and painted to resist rust and surface wear. The combination of sturdy metal and nylon bushings helps maintain alignment and reduces noise while towing.

• High-quality steel construction resists bending under rated loads
• Black oxidized and painted surface for corrosion resistance
• Nylon bushings reduce friction and extend component life
• Self-locking nuts help prevent loosening under vibration

How do I install the kit and what should I prepare?

Installation requires basic mechanical skills, common hand tools, and torqueing to manufacturer specs. Remove the worn equalizers and shackles, fit new nylon bushings and hardware, then torque bolts to secure the assembly and check for correct axle alignment.

• Tools: wrenches, sockets, torque wrench, jack and jack stands
• Replace worn hangers or spring eyes if damaged
• Apply anti-seize or appropriate lubricant per installer guidance
• Inspect after first 100 miles and re-torque hardware if necessary

Who is this for: The OZISENS 256L Shackle Kit is aimed at trailer owners, fleet managers, and DIY mechanics who need a complete, reliable replacement for tandem-axle double-eye spring suspensions rated 3,500–5,200 lb. It’s ideal if you want matched hardware and bushings in one package to reduce installation time and ensure parts compatibility. If your trailer’s spring eyes, hangers, and axle rating match the kit dimensions, this set provides the components required to restore proper equalizer function and improve towing stability.