Tandem Trailer Suspension Rebuild Kit
R&P Carriages EQ-104 Tandem Axle Trailer Suspension Rebuild Kit Wet Bolts 2" Shackles
Tandem axle trailer suspension rebuild kit with greaseable wet bolts, flange nuts, 2" shackle straps, nylon bushings, and short EQ-104 / 13-104 style equalizers. Built for compatible trailer suspension service where the listed dimensions and hardware match your application.
Part Number: SRK-TA-WB-104-2 EQ-104 / 13-104 Style Equalizers 2" Shackle Straps
Specifications
| Specification | Detail |
| Part Number | SRK-TA-WB-104-2 |
| Brand | R&P Carriages |
| Product Type | Tandem axle trailer suspension rebuild kit |
| Application | Tandem trailer suspension service and repair applications |
| Equalizer Reference | 13-104 short equalizer / EQ-104 style |
| Equalizer Length | 5.6" |
| Equalizer Bushing I.D. | 9/16" |
| Shackle Strap Reference | SL-2 |
| Shackle Strap Length | 2" hole center to center |
| Shackle Strap Overall Dimensions | 3.187" x 1.25" x 0.23" |
| Shackle Strap Hole Size | 1/2" holes |
| Wet Bolt Reference | FA-7-187 greaseable wet bolt |
| Wet Bolt Size | 7/16" x 3" step-down shackle bolt |
| Thread Length | 1/2" |
| Nut Reference | FA-6-92Z, 7/16" flanged nut |
| Bushing Reference | 8137 nylon bushing |
| Bushing Dimensions | 1.75" long, 0.69" O.D., 0.57" I.D. |
Fitment / Application
| Category | Details |
| Vehicle / System | Tandem axle trailer suspension system |
| Primary Fit | Compatible tandem axle trailer suspension assemblies using 13-104 / EQ-104 style short equalizers and 2" shackle straps. |
| Service Range | Commonly used in trailer suspension repair applications listed for 7K-14K style tandem suspension service. Verify before ordering. |
| Configuration | For suspension layouts where the equalizer length, bushing dimensions, shackle length, wet bolt size, and nut size match. |
| Notes | Verify equalizer dimensions, shackle strap length, bolt size, bushing dimensions, hanger spacing, and suspension layout before ordering or installation. |
Overview
This R&P Carriages SRK-TA-WB-104-2 tandem axle suspension rebuild kit brings together the key wear-service components commonly replaced during trailer suspension repair. The kit includes greaseable wet bolts, 7/16" flanged nuts, 2" shackle straps, nylon bushings, and two 13-104 short equalizers for compatible tandem axle suspension setups.
R&P Service Insight
Tandem trailer suspension parts should be checked as a system. Worn bushings, loose shackles, damaged equalizers, or tired bolt hardware can create noise, uneven movement, and poor suspension tracking.
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System Refresh: Includes equalizers, shackle straps, bushings, wet bolts, and flanged nuts.
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Greasable Hardware: Wet bolts support service lubrication when installed and maintained correctly.
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Measure First: Match your current equalizer, shackle, bushing, and bolt dimensions before ordering.
R&P Knowledge Hub
Compatibility: Intended for compatible tandem axle trailer suspension applications using 13-104 / EQ-104 style short equalizers, 2" shackle straps, 8137 nylon bushings, FA-7-187 greaseable wet bolts, and FA-6-92Z 7/16" flanged nuts.
Vehicle / System Fit: Tandem trailer suspension systems where the existing equalizer profile, shackle length, bushing dimensions, wet bolt size, and mounting points match the listed components.
Installation Notes: Confirm hanger spacing, equalizer dimensions, shackle strap length, bolt diameter, thread length, and bushing fit before installation.
Performance Insight: Replacing suspension wear items together helps reduce mismatched hardware and supports more consistent suspension movement across both sides of a tandem axle trailer.
Brand & Fitment Note
Selling Brand: R&P Carriages
Application Reference: SRK-TA-WB-104-2, FA-7-187, FA-6-92Z, SL-2, 8137, and 13-104 references describe the listed component style, size, or application target only.
What This Means: This listing is for an R&P Carriages curated tandem trailer suspension rebuild kit, not a guaranteed OEM-branded item unless separately stated and verified.
Before Ordering: Verify measurements, mounting style, suspension layout, bushing fit, bolt size, and included components before installation.
R&P Repair Insight
Before installing a tandem trailer suspension rebuild kit, inspect both sides of the suspension for worn shackles, elongated bolt holes, cracked or damaged equalizers, and bushing wear. Similar-looking trailer suspension parts can use different lengths and hole sizes, so measurement confirmation is the safest way to verify fit.
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Equalizer Check: Confirm the existing equalizer matches the 13-104 short equalizer style and 5.6" length.
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Shackle Check: Confirm 2" hole-center shackle straps with the listed 3.187" x 1.25" x 0.23" overall dimensions.
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Bushing / Bolt Check: Confirm 8137 nylon bushing dimensions and FA-7-187 7/16" x 3" wet bolt compatibility.
Features
Complete Tandem Suspension Service Kit
Includes equalizers, shackles, nylon bushings, greaseable wet bolts, and flanged nuts for the listed tandem axle suspension setup.
13-104 Short Equalizers
Includes two 5.6" short equalizers with 9/16" I.D. bushings for compatible EQ-104 style suspension layouts.
2" Shackle Straps
Includes eight SL-2 shackle straps with 2" hole center-to-center length and 1/2" holes.
Greaseable Wet Bolt Hardware
Includes 14 FA-7-187 wet bolts and 14 FA-6-92Z 7/16" flanged nuts for the listed kit configuration.
Included Components
| Quantity | Item |
| 14 | FA-7-187 greaseable wet bolts, 7/16" x 3" step-down shackle bolt with 1/2" thread length |
| 14 | FA-6-92Z 7/16" flanged nuts |
| 8 | SL-2 shackle straps, 2" hole center to center, 3.187" x 1.25" x 0.23" overall dimensions, 1/2" holes |
| 8 | 8137 nylon bushings, 1.75" long, 0.69" O.D., 0.57" I.D. |
| 2 | 13-104 short equalizers, 5.6", with 9/16" I.D. bushings |
Verify all suspension measurements, equalizer style, shackle strap length, bolt size, thread length, bushing dimensions, hanger spacing, and included component quantities before installation. Component reference numbers in this listing describe the listed kit contents and application style only unless otherwise verified.
SRK-TA-WB-104-2 tandem axle suspension rebuild kit, EQ-104 rebuild kit, 13-104 short equalizer kit, trailer suspension repair kit, 7K 14K tandem suspension kit, FA-7-187 wet bolts, FA-6-92Z flanged nuts, SL-2 shackle straps, 8137 nylon bushings, 2 inch shackle straps, greaseable wet bolt trailer suspension kit
