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Spring Seat | 3 Inch Round Trailer Axle | 4,400 to 7,200 lbs. Capacity

SKU 3-42

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6 In Stock as of December 08, 2022 8:40 AM EST.

Redline Spring Seat 3-42 provides proper positioning for the axle on your trailer and adds extra support. Designed for 1-3/4 or 2 inch wide leaf springs, the spring seat welds onto round 3 inch diameter axles. 4,400 to 7,200 lbs. axle capacity.

Product Specs for Redline 3-42

  • Axle Size:3 inch
  • Capacity:4,400 lbs., 6,000 lbs., 7,000 lbs., 7,200 lbs.
  • Note:2 spring seats are required for each axle.
  • MPN: 3-42
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Redline 3-42 Details

Redline Spring Seat 3-42 is designed for 3 inch diameter round trailer axles.
  • Provides extra support and secure positioning for trailer axle
  • Sits on top of 1-3/4" or 2" wide springs
  • Welds onto round 3" diameter axle
  • 4,400 to 7,200 lbs. axle capacity
  • Raised knob on leaf spring fits cutout on flat side of seat to prevent turning or shifting
  • Replaces TruRyde SS-300 Spring Seat

Customer Q&A - Redline 3-42


Redline is the one of the nation’s largest seller of replacement trailer parts. Redline has been leading the way since 1980 and have built their strong reputation by providing the best quality replacement trailer products.

Redline replacement trailer parts and accessories will you keep your trailer in top towing condition. They offer a large selection of trailer suspension parts, accessories and are a leading supplier in the United States. They supply many of the country’s top automotive stores and they stand behind their products. They are a one stop shop for trailer replacement parts for all types of trailers including utility trailers, flat beds, horse trailers, boat trailers and more.

Redline Warranty

1 Year Limited Warranty

On all Redline products. Some products have longer warranty coverage periods. This coverage is item by item and you should review the warranty information included.

What the warranty does not cover

Normal wear and tear over time, damage from abuse or neglect, corrosion, and damage resulting from accidents is not covered. Improper installation including welding will void any warranty. Any alteration of products beyond the included installation instructions will void the warranty.

How to get service

If a Redline product failure results from a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.

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