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Polyurethane End Link Bushings for Tighter, More Responsive Sway Bar Action
The Prothane Universal Sway Bar End Link Bushings (PRO19-427) provide a set of eight polyurethane bushings in 1/2-inch bore by 1-inch outer diameter for sway bar end link replacement applications across a wide range of vehicles using this standard end link bushing size. PRO19-427 uses Prothane's red polyurethane compound to replace deteriorated rubber end link bushings with a firmer, more durable material that resists compression set, oil contamination, and weathering over the life of the vehicle, improving sway bar response and lateral body control on street and light track use.
Key Features
- PRO19-427 universal end link bushing set: 1/2-inch bore x 1-inch OD, 8 bushings in red polyurethane
- Prothane polyurethane compound for superior resistance to compression set versus OE rubber
- Tighter, more immediate sway bar response compared to worn factory rubber end link bushings
- Universal sizing fits any vehicle using 1/2-inch bore x 1-inch OD end link bushings
- Red polyurethane for corrosion resistance and long-term durability
- Set of 8 bushings covers a typical full sway bar end link replacement for front or rear axle
Specifications
| Detail | Value |
|---|---|
| Part Number | PRO19-427 |
| Brand | Prothane |
| Inner Diameter | 1/2 inch (0.5 inch) |
| Outer Diameter | 1 inch |
| Material | Polyurethane (red) |
| Quantity | Set of 8 |
| Application | Universal (any vehicle using 1/2 x 1-inch end link bushings) |
| UPC | Verify with Prothane |
What's Included
- 8 x PRO19-427 polyurethane end link bushings, red, 1/2-inch bore x 1-inch OD
- Prothane product documentation
About Prothane
Prothane has been manufacturing polyurethane suspension components for street and track vehicles since 1980, offering bushing kits and individual components for thousands of vehicle applications. Their red polyurethane compound is engineered to outlast OE rubber while maintaining drivability on the street.
FAQ
What is the PRO19-427?The PRO19-427 is a Prothane universal sway bar end link bushing set of 8 red polyurethane bushings with 1/2-inch inner diameter and 1-inch outer diameter. They are a universal bushing for any vehicle whose sway bar end links accept this standard size, replacing worn or deteriorated rubber factory bushings.
How do I know if PRO19-427 fits my vehicle?Measure the inner diameter (bolt diameter) and outer diameter of your existing end link bushings before purchasing. PRO19-427 fits applications using 1/2-inch bolt diameter and 1-inch outer bushing diameter. Compare with your factory bushing dimensions to confirm fitment.
How many end link bushings does a typical vehicle use?Most vehicles use 2 to 4 end link bushings per sway bar (one per end link, two ends per bar). The PRO19-427 set of 8 typically covers both front or rear sway bar end links with bushings to spare depending on the number of positions per link.
Are polyurethane end link bushings noisier than rubber?Polyurethane bushings can produce minor squeaking if not lubricated properly during installation. Apply the included or recommended polyurethane grease to all bushing surfaces during installation to minimize noise.
Will PRO19-427 improve handling?Replacing worn rubber end link bushings with Prothane polyurethane eliminates slop and compression-set deformation in the end link assembly, resulting in more immediate sway bar engagement under cornering and improved lateral body control on street and light track use.
Do I need to press in the PRO19-427 bushings?End link bushings are typically press-fit or slide-fit depending on the end link design. PRO19-427 bushings are installed by hand with lubrication and do not require a hydraulic press in most applications.
Are PRO19-427 bushings CARB compliant?Prothane polyurethane bushings are designed to be smog and emissions neutral and do not affect vehicle emissions output. Consult Prothane directly for CARB compliance status if required for your state.
Can PRO19-427 bushings be used in any climate?Yes. Prothane polyurethane is engineered for year-round use including cold-weather climates where rubber bushings tend to crack and harden. The material maintains flexibility across a wide temperature range.
Installation Overview
- Safely lift and support the vehicle and locate the sway bar end links on the affected axle
- Remove the end link mounting bolt and slide out the worn rubber bushing
- Clean the end link bore of debris and corrosion
- Apply polyurethane grease generously to the PRO19-427 bushing inner and outer surfaces
- Install the PRO19-427 bushing into the end link bore, confirming it seats fully
- Reinstall the mounting bolt and torque to factory specification
- Repeat for all end link positions being replaced
- Road test and check for noise or play before returning to normal driving
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