Dexter PR4B Leaf Spring – Double Eye Trailer Suspension Spring Replacement

Ensure a smooth, stable towing experience with the Dexter PR4B Leaf Spring — a high-quality OEM replacement engineered for strength, reliability, and long service life. Whether you're maintaining or upgrading your trailer’s suspension, the PR4B is built to handle the demands of the road with confidence. 4 leaf double-eye spring.  The PR4B is the most popular spring for a 3.5k axle.  

Key Features:

• Double Eye Spring Design
  Helps evenly distribute weight and reduce bounce for improved ride quality.

• Durable Steel Construction
  Crafted from high-tensile spring steel for consistent support under load.

• Protective Finish
  Treated with a corrosion-resistant coating to extend lifespan and prevent rust.

• Easy Installation
  Bolt-on design with pre-drilled eyelets makes replacement quick and straightforward.

• OEM Dexter Part #: PR4B
  Manufactured to meet Dexter’s factory standards for durability and performance.

Specifications:

• Part Number: PR4B

• Type: Double eye leaf spring

• Load Capacity: 1,750lb per spring

• Length (eye-to-eye): 25-1/4" long(from center to center of the eyes)

• Number of Leaves: 4

• Material: High-strength Spring steel

• Finish: Black powder-coated or galvanized (confirm if applicable)

Trailer Compatibility

The Dexter PR4B Leaf Spring is compatible with a wide range of trailer types, including:

• Utility Trailers

• Boat Trailers

• Cargo Trailers

• RV & Travel Trailers

• Landscape Trailers

• Horse & Livestock Trailers

• Car Haulers

• Enclosed Trailers

Alternate Item Numbers

• 072-042-00
•  4342-17
•  SW4B 
• 4332-12
• 9150014