Power Step Running Board Motor Kit Replacement 80-03129-90 - Direct

In this review the focus is on a practical and affordable replacement motor for power running boards, aimed at owners who need a reliable fix without replacing the entire step assembly. The 80-03129-90 Power Step Running Board Motor Kit is presented as a direct replacement for the white AMP Research motor with three-bolt mounting holes, and the bottom line is simple: this is for DIY owners and technicians who want a straightforward, functional swap that restores automated step motion. It is valued for its ease of installation and broad left/right versatility.

Key Features

• Direct Replacement: Replaces part number 80-03129-90 so owners can restore step function without changing brackets or wiring in many setups.
• Wide Compatibility: Designed specifically for the white AMP Research motor with three-bolt mounting holes, reducing guesswork when matching parts.
• Versatile Installation: Usable on either the left or right side, giving flexibility and reducing the need to stock side-specific parts.
• Efficient Functionality: Extends the steps when the door opens and stops automatically at full extension, then retracts when the door closes for seamless operation.
• Simple Mounting: The three-bolt mounting design keeps installation straightforward for someone comfortable with basic automotive fasteners and wiring checks.

Who It's For

This motor kit is best for truck and SUV owners who already have an AMP Research style power step system and need a like-for-like motor swap to get their steps moving again. It is especially useful for DIYers and independent shops that prefer replacing a failed motor rather than the entire running board mechanism.

Those who should look elsewhere include owners who cannot verify their existing motor has the white housing with three-bolt mounting holes, or users seeking a motor with additional features such as integrated position sensors beyond the built-in stop behavior. Confirm the part number before purchase to avoid compatibility issues.

Pros & Cons

Pros

• Fits the white AMP Research three-bolt pattern, making it a reliable replacement option.
• Works on both left and right sides, simplifying inventory and replacement decisions.
• Customers report good functionality and easy installation, often citing minimal hardware changes.
• Offers solid value for money compared with replacing a full step assembly.

Cons

• Compatibility depends on matching the white AMP Research motor with three-bolt mounting holes, so incorrect identification will cause fitment issues.
• Some users reported steps that were stuck down before replacement, indicating additional diagnostics may be needed beyond swapping the motor.

Specifications

Product Type	Power Step Running Board Motor Kit
Replacement Part	80-03129-90 (direct replacement)
Compatible With	White AMP Research motor with three-bolt mounting holes
Mounting	Three-bolt mounting pattern
Side Fitment	Left or right side compatible
Operation	Extends on door open, retracts on door close with automatic stop

Our Verdict

The 80-03129-90 Power Step Running Board Motor Kit is a solid, no-frills replacement for owners who can confirm the three-bolt white AMP Research motor pattern. It delivers reliable operation, straightforward mounting, and good value for anyone looking to restore automated step function without replacing the entire system.

Frequently Asked Questions

Will this motor fit either side of my vehicle?
Yes, the motor is designed to be suitable for both left and right side installation.

How do I confirm compatibility?
Verify that the existing motor is the white AMP Research style with three-bolt mounting holes and matches part number 80-03129-90 before ordering.

What if my steps are stuck down after installation?
If steps remain stuck, additional diagnostics of the linkage or wiring may be required even if the motor itself is operating correctly; contact customer service for assistance.