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Trailer Spring Accessories

Trailer Spring Rocker Bush 5/8" × 7/8" × 45mm – Pack of 2

SKU: V-SB58B

$8.35
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The SB58B Trailer Spring Rocker Bushes are designed to replace worn suspension bushes in compatible boat, box and utility trailers. Manufactured for use with 5/8-inch suspension bolts, these bushes feature a 7/8-inch outside diameter and 45mm overall length. Supplied in a convenient pack of two, they help maintain correct spring alignment, reduce metal-to-metal contact and support smooth suspension movement during towing.

Key benefits

Key Benefits

  • - Durable Nylon Construction: Designed for trailer suspension applications.
  • - 5/8" Internal Diameter: Suits compatible suspension bolts.
  • - 7/8" External Diameter: Fits correctly sized spring eyes or rocker housings.
  • - 45mm Length: Suitable for selected 45mm-wide suspension assemblies.
  • - Reduces Metal-to-Metal Contact: Helps minimise suspension wear.
  • - Maintains Spring Alignment: Supports correct suspension operation.
  • - Twin Pack: Contains two replacement bushes.

Specifications & Dimensions

  • - Brand: ARK
  • - Part Number: SB58B
  • - Product Type: Trailer spring rocker bush
  • - Material: Nylon
  • - Colour: Black nylon
  • - Internal Diameter: 5/8" (15.88mm)
  • - External Diameter: 7/8" (22.23mm)
  • - Overall Length: 45mm (1.77")
  • - Compatible Bolt Diameter: 5/8" (15.88mm)
  • - Mounting Type: Press-fit suspension bush

Trailer & Suspension Compatibility

  • Suitable for correctly sized suspension assemblies
  • - Boat trailers
  • - Box trailers
  • - Utility trailers
  • - Camper trailers
  • - Tandem-axle trailers
  • - Rocker suspension assemblies
  • - Compatible slipper spring suspension systems
  • Important: Fitment depends on the spring eye or rocker housing dimensions, not simply the trailer type.

Suitable Applications

  • - Replacing worn trailer spring bushes
  • - Rocker suspension maintenance
  • - Boat trailer suspension repairs
  • - Trailer spring and shackle refurbishment
  • - Preventative trailer maintenance

Important Fitment Information

  • Before purchasing or installing
  • - Confirm the suspension bolt diameter is 5/8" (15.88mm).
  • - Measure the spring eye or rocker housing bore to confirm the 7/8" (22.23mm) outside diameter.
  • - Check the required bush length is 45mm.
  • - Inspect suspension bolts for corrosion, bending or excessive wear.
  • - Replace damaged bushes before further suspension wear occurs.
  • - Ensure the suspension moves freely after installation.
  • - Inspect the opposite side of the suspension for similar wear.

Signs the Spring Bush Needs Replacing

  • - Excessive movement in the spring eye or rocker assembly
  • - Knocking or rattling from the suspension
  • - Uneven or excessive bush wear
  • - Cracked, crushed or distorted nylon
  • - Metal-to-metal contact
  • - Worn suspension bolts
  • - Misaligned trailer springs

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