AMP Research PowerStep End Cap Kit
Our PowerStep End Cap Kit is the factory-original replacement part engineered to restore your running boards' weatherproof seal and finished appearance. Each kit contains precision-molded caps designed to fit snugly over the exposed ends of PowerStep running boards, preventing debris intrusion and protecting internal motor components from road spray.
We built these end caps from impact-resistant polymer tested to withstand years of UV exposure, temperature extremes, and rock strikes. The textured surface matches the PowerStep board finish, maintaining the clean integrated look our customers expect. Installation takes minutes with no drilling required — caps snap directly into the existing mounting points on your PowerStep assembly.
What's included in this kit
Why end caps matter for PowerStep longevity
The end caps on your PowerStep running boards serve as the first line of defense against water, mud, and road salt entering the sealed motor housing. Over time, cap damage from parking lot curbs or off-road obstacles can compromise that barrier.
We see customers replace end caps after minor impacts or when upgrading from older PowerStep generations that used different cap geometry. A fresh set restores the weathertight seal that keeps your boards operating smoothly season after season. The same attention to detail we apply to the trim strip components throughout our product line extends to these protective caps — every molding detail is there for a reason.
Installation process
Installing new AMP Research PowerStep end caps requires no special tools or mechanical experience. Start by fully extending your PowerStep boards using the manual override procedure outlined in your owner’s manual — this provides clear access to the cap mounting points.
Remove the old cap by gently prying outward from the bottom edge while supporting the board assembly. The cap releases from internal retention clips without damaging the bracket. Align the replacement cap’s internal ribs with the corresponding slots on the PowerStep housing, then press firmly until you hear the retention clips engage.
Compatibility across PowerStep models
This end cap kit fits all PowerStep and PowerStep XL running boards manufactured from 2008 to current model years. The mounting interface remains consistent across our entire PowerStep family, though cap external dimensions vary slightly between standard and XL board widths.
Verify your PowerStep model before ordering by checking the identification label on the motor housing or referencing your original purchase documentation. Our customer service team can confirm fitment using your vehicle year, make, and model if you’re unsure which PowerStep generation is currently installed.
Essential PowerStep replacement parts
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End cap installation & compatibility questions
Yes, this kit is compatible with both standard PowerStep and PowerStep XL models from 2008 to current production. The mounting interface is identical across the entire PowerStep family. If you have an XL model, the cap dimensions are sized to match the wider board profile while using the same retention clip system.
Inspect your caps for visible cracks, loose fitment, or rattling sounds during board deployment. If you notice moisture inside the motor housing after rain or snow exposure, the weatherproof seal has likely been compromised. UV fading alone doesn't affect function, but any structural damage to the cap warrants replacement to protect internal components.
Absolutely. Installation happens with the PowerStep boards still mounted to your vehicle. Simply extend the boards using the manual override, remove the old caps by releasing the retention clips, and snap the new caps into place. The entire process takes less than ten minutes with no tools required.
Yes, each cap ships with stainless steel retention clips already installed in the correct positions. You don't need to purchase or install any additional hardware. The kit includes everything needed for a complete installation on both driver and passenger sides.
We've tested aftermarket caps that fail UV exposure and impact testing within months. Our OEM caps use a proprietary polymer blend developed specifically for the thermal cycling and debris impacts PowerSteps encounter. The tighter molding tolerances also ensure a better weatherproof seal. Aftermarket options may fit initially but rarely maintain that seal integrity over multiple seasons.
If the noise is a rattle from loose end caps, replacement will eliminate it. However, grinding or clicking sounds during deployment typically indicate internal motor or gear wear that requires different service parts. The end caps primarily provide sealing and debris protection rather than addressing mechanical wear inside the motor housing.
Under normal operating conditions, our end caps last five to seven years before UV degradation or impact damage requires replacement. Vehicles in extreme sun exposure or heavy off-road use may see shorter service life. We recommend visual inspection every six months and replacement at the first sign of structural compromise to prevent moisture intrusion.