MOUNTAIN_ARK Trailer Axle Spring Perch Seats 4-Pack for 2-3/8" Axles — Weld-On Saddles for 1-3/4" & 2" Leaf Springs

MOUNTAIN_ARK 4-pack spring perch seats are welded saddles that attach to 2-3/8" round axles to anchor 1-3/4" or 2" leaf springs securely and consistently.

These heavy-duty spring perch seats are fabricated from low carbon steel with a plain finish and sized to fit common small-utility and boat trailer axles. Each saddle is designed for weld-on installation to a 2-3/8" outer diameter axle tube and provides a stable platform for 1-3/4" or 2" wide leaf springs. The dimensional design and bolt-hole pattern let you line up center and retainer bolts precisely for safe spring positioning and repeatable alignment during axle rebuilds or custom trailer builds.

How do these spring perch seats attach to the axle?

The seats are meant to be welded directly to a 2-3/8" OD round axle tube. Their curved underside matches the axle diameter for a secure weld fillet, and the flat top accepts the leaf spring's contact area. Proper welding by a competent fabricator ensures long-term stability under towing loads.

• Weld-on design tailored for 2-3/8" outer diameter round axle tubes
• Curved base promotes consistent weld penetration and fit-up
• Plain finish ready for welding and post-weld coating

What are the exact dimensions and bolt patterns?

Each saddle measures 4" long, 1-7/8" wide and 1-3/16" high, made from 7/32" thick low carbon steel. There is a 5/8" center bolt hole for locating the leaf spring and two 1/2" holes for retainer or U-bolt clearance, giving you a standard bolt layout for most trailer spring setups.

• Overall: 4" L x 1-7/8" W x 1-3/16" H
• Material thickness: 7/32" low carbon steel
• Holes: 5/8" center bolt hole plus two 1/2" bolt holes

Will these fit my leaf springs and trailer application?

They are intended for 1-3/4" or 2" wide leaf springs commonly used on small trailers, utility trailers, and boat trailers. Confirm your axle outer diameter is 2-3/8" and that your spring width matches; if so, these saddles will align and secure the spring leaves when welded in the correct position.

• Compatible with 1-3/4" and 2" wide springs
• Designed for axles with 2-3/8" outer diameter tubes
• Common for small trailers, boat trailers, and utility trailer suspensions

What should I know before welding and finishing?

Prepare mating surfaces by cleaning paint, rust and oil to ensure a solid weld. Tack-weld, check alignment with the spring center bolt, then complete fillet welds around the curved base. After welding, apply a suitable primer and corrosion-resistant coating to preserve the plain steel finish.

• Clean axle tube and saddle contact areas before welding
• Tack, verify spring alignment, then finish welds for strength
• Prime and coat post-weld to prevent corrosion

Who is this for: These MOUNTAIN_ARK spring perch seats are intended for trailer builders, repair shops and DIY fabricators who need rugged, weld-on saddles for 2-3/8" axles and 1-3/4" or 2" leaf springs. They suit restoration projects, custom axle assemblies and maintenance tasks where consistent spring location and a dependable bolt pattern are required. If you want straightforward, dimensioned spring saddles that integrate with common trailer hardware and accept conventional center and retainer bolts, this 4-pack offers parts for both sides of an axle pair or two axle assemblies.