Trailer Suspension • Equalizer Bushing • Nylon Wear Sleeve
Nylon Equalizer Bushing for Trailer Suspension
Replacement nylon equalizer bushing for compatible trailer suspension equalizer applications. Match the inside diameter, outside diameter, and overall length before ordering.
Part Number: 721590 7/8" I.D. 1-1/16" O.D. 2-15/16" Long
Key Measurements & Specs
| Specification | Detail |
| Part Number | 721590 |
| Product Type | Nylon equalizer bushing |
| Inside Diameter | 7/8" |
| Outside Diameter | 1-1/16" |
| Overall Length | 2-15/16" |
| Material | Nylon |
| Quantity Included | 1 bushing |
Fitment / Application
| Category | Details |
| System | Trailer leaf spring suspension |
| Application | Equalizer pivot bushing replacement |
| Fitment Method | Match the removed bushing by I.D., O.D., and length |
| Buyer Check | Verify equalizer bore condition and bolt diameter before installation |
Top Features
| Feature | Buyer Benefit |
| Nylon Construction | Creates a replaceable wear surface at the equalizer pivot point. |
| 7/8" I.D. | Fits compatible pivot hardware requiring this inside diameter. |
| 1-1/16" O.D. | Matches equalizer bores sized for this outside diameter. |
| 2-15/16" Length | Designed for applications using the longer equalizer bushing size. |
Overview
This 721590 nylon equalizer bushing is used in compatible trailer suspension equalizer assemblies where the required bushing size is 7/8" inside diameter, 1-1/16" outside diameter, and 2-15/16" long. It is a service replacement bushing for the equalizer pivot area and should be matched by measurement before ordering.
R&P Service Insight
Equalizer bushings are wear parts. When they wear down, the suspension pivot can develop unwanted movement, which may also affect bolts, shackles, hangers, and equalizer bores.
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Measure the Old Bushing: Confirm the inside diameter, outside diameter, and length before ordering.
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Inspect the Pivot Hardware: Worn or grooved bolts should be replaced along with the bushing.
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Check the Equalizer: If the equalizer bore is elongated or damaged, a new bushing alone may not solve the issue.
R&P Knowledge Hub
Compatibility: Fits compatible trailer suspension equalizer applications requiring a 7/8" I.D., 1-1/16" O.D., 2-15/16" long nylon bushing.
Vehicle / System Fit: Commonly used in trailer leaf spring suspension equalizer pivot locations where this measured bushing size is required.
Installation Notes: Remove the old bushing, clean the equalizer bore, inspect the bolt and surrounding hardware, then install only after confirming the new bushing matches the original dimensions.
Performance Insight: A correctly sized bushing helps reduce metal-to-metal contact and supports proper pivot movement inside the equalizer assembly.
Brand & Fitment Note
Selling Reference: 721590 nylon trailer suspension equalizer bushing.
Application Reference: Trailer, axle, and suspension references should be treated as application guides only. Final fitment depends on measured bushing dimensions and the condition of the equalizer assembly.
What This Means: This listing is for one nylon equalizer bushing only. It is not a complete suspension rebuild kit and does not include bolts, nuts, equalizers, shackles, springs, or hangers.
Before Ordering: Confirm the required I.D., O.D., length, bolt size, equalizer bore, and quantity needed for your trailer.
R&P Repair Insight
When servicing trailer suspension, bushing replacement should be treated as part of a full pivot-point inspection. A new bushing can wear quickly if installed with damaged hardware or into a worn equalizer bore.
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Check for Slop: Excess movement at the equalizer can indicate worn bushings, worn bolts, or damaged pivot holes.
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Look at the Bolt Surface: Deep grooves, flat spots, or corrosion on the bolt can shorten bushing life.
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Count Every Location: This listing includes one bushing. Order the quantity required for the number of pivot points being serviced.
Features
Replacement Equalizer Bushing
Designed for trailer suspension equalizer applications using the 721590 bushing size.
Verified Core Dimensions
Measures 7/8" inside diameter, 1-1/16" outside diameter, and 2-15/16" long.
Nylon Wear Surface
Provides a replaceable sleeve between the equalizer and pivot hardware.
Suspension Service Part
Useful when refreshing worn equalizer pivot points on compatible leaf spring trailer suspensions.
Included Components
| Quantity | Item |
| 1 | 721590 nylon equalizer bushing |
| Not Included | Bolts, nuts, equalizers, shackles, springs, hangers, grease, or installation hardware |
Important Fitment Note: Verify all measurements, suspension hardware, equalizer bore condition, bolt diameter, and quantity needed before ordering. Trailer suspension parts can vary by axle rating, suspension style, equalizer type, and manufacturer setup.
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