Trailer Suspension Equalizer
Straight Trailer Equalizer, 1.75 wide, 8 long, 3/4 Center hole, 9/16 end holes
Straight suspension equalizer used in double-eye leaf spring trailer suspension setups where the 8" center-to-center length, 3/4" center hole, and 9/16" end holes match the existing suspension hardware.
Part Number: EQ-R83 8" Center-to-Center Length 3/4" Center Hole 9/16" End Holes
Key Measurements & Specs
| Specification |
Detail |
| Part Number / SKU |
EQ-R83 |
| Product Type |
Straight trailer suspension equalizer |
| Spring Width Application |
For 1-3/4" wide double-eye leaf spring suspension applications |
| Overall Working Length |
8" center-to-center between end holes |
| Center-to-End Measurement |
4" from center hole to each end hole |
| Center Hole Diameter |
3/4" |
| End Hole Diameter |
9/16" |
| Quantity Included |
One straight equalizer |
Fitment / Application
| Category |
Details |
| Trailer System |
Double-eye leaf spring trailer suspension |
| Primary Fit |
Commonly used with 1-3/4" wide double-eye springs where measurements match |
| Fitment Method |
Match the existing equalizer length, center hole diameter, end hole diameter, and spring width before ordering |
| Important Note |
Verify before ordering. Trailer suspension parts can look similar while using different hole sizes, lengths, or hanger spacing. |
Top Features
| Feature |
Buyer Benefit |
| Straight Equalizer Design |
Designed for trailer suspension layouts that use a straight equalizer between double-eye leaf springs. |
| 8" End-Hole Span |
Matches applications requiring an 8" center-to-center distance between the outer shackle bolt holes. |
| 3/4" Center Hole |
Fits suspension setups using a 3/4" center hanger bolt or compatible center mounting hardware. |
| 9/16" End Holes |
Works with common 9/16" shackle bolt locations when the rest of the suspension geometry matches. |
Overview
The EQ-R83 straight equalizer is a trailer suspension replacement component for compatible double-eye leaf spring systems. It measures 8" from end hole to end hole, 4" from the center hole to each end hole, and is intended for setups using a 3/4" center hole and 9/16" end holes. Use this part when replacing a worn or damaged equalizer only after confirming the measurements against the trailer’s existing suspension.
R&P Service Insight
Equalizers are measurement-sensitive parts. A small difference in hole spacing or hole diameter can affect shackle angle, axle spacing, and suspension movement.
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Measure Before Ordering: Confirm the end-hole center-to-center length, center hole diameter, and end hole diameter.
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Check Both Sides: If one equalizer is worn, inspect the opposite side, shackles, bolts, and bushings at the same time.
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Hardware Match: This listing is for the equalizer only unless otherwise stated. Bolts, nuts, shackles, and hangers are not automatically included.
R&P Knowledge Hub
Compatibility: For compatible 1-3/4" wide double-eye trailer spring suspension applications where the 8" length, 3/4" center hole, and 9/16" end holes match.
Vehicle / System Fit: Trailer leaf spring suspension systems using a straight equalizer configuration.
Installation Notes: Support the trailer safely before suspension work. Inspect related shackles, wet bolts, spring eye bushings, equalizer bolts, and hanger wear during replacement.
Performance Insight: The equalizer helps transfer suspension movement between axles. Correct geometry helps the suspension articulate properly and reduces unnecessary stress on related hardware.
Brand & Fitment Note
Selling Brand: R&P Carriages aftermarket trailer suspension replacement component.
Application Reference: EQ-R83 identifies the part style and measurement set. Use the listed dimensions as the fitment guide.
What This Means: This listing is for one straight trailer suspension equalizer, not a complete suspension rebuild kit unless specifically stated.
Before Ordering: Verify equalizer length, center hole size, end hole size, spring width, shackle configuration, hanger spacing, and included components before installation.
R&P Repair Insight
When replacing a trailer suspension equalizer, inspect the full wear path rather than only the equalizer body. Loose bolts, worn bushings, elongated holes, or damaged shackles can cause noise, uneven tire wear, and poor suspension tracking.
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Hole Wear: Check whether the old equalizer holes are rounded, stretched, or visibly wallowed out.
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Shackle Angle: Compare the suspension position before and after installation to confirm the geometry remains correct.
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Related Parts: Consider replacing worn shackle links, bolts, nuts, and bushings while the suspension is apart.
Features
8" Straight Equalizer Length
Measures 8" center-to-center between the outer end holes for compatible trailer suspension layouts.
4" Center-to-End Spacing
Center hole sits 4" from each end hole, creating the balanced straight equalizer geometry used in matching applications.
3/4" Center Hole
Designed for suspension setups using a 3/4" center mounting hole at the equalizer hanger position.
9/16" End Holes
Outer holes are sized for 9/16" shackle bolt locations when paired with the correct suspension hardware.
Included Components
| Quantity |
Item |
| 1 |
Straight trailer suspension equalizer, part number EQ-R83 |
| Not Included |
Shackle links, bolts, locknuts, hangers, springs, and additional suspension hardware unless separately shown or selected |
Important Fitment Note: Verify all measurements before ordering. Confirm the 8" end-hole center-to-center length, 4" center-to-end spacing, 3/4" center hole, 9/16" end holes, spring width, hanger layout, shackle hardware, and included components before installation.
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