Description
Electric window motor for the right front window for PEUGEOT 407. With electric folding-in function. Passenger door.
This electric window motor is designed for the right front (passenger) door of the Peugeot 407 and is ideal for professional workshops and competent DIY mechanics. The unit carries OEM-related identifiers that make it easy to find by part number: 1137328127 and 9222Y9 (NFP). The motor drives the window regulator mechanism to raise and lower the glass smoothly and integrates the vehicle’s electrical folding feature where applicable.
Technical Information
- Manufacturer: Stellantis / Peugeot
- Model: Peugeot 407
- Product Codes: 1137328127
- Other Numbers: 9222Y9, NFP
- Location: Right Front (Passenger) Door
- Electrical System: 12V Automotive
Fitment And Function
Fits Peugeot 407 right front door applications where the motor operates the power window regulator. The motor provides the rotary drive for the regulator assembly and communicates with the vehicle’s switches and folding mechanism when equipped. Searching by the OE code 1137328127 or the reference 9222Y9 will commonly identify the correct replacement for affected vehicles.
Installation Recommendations
- Disconnect the vehicle battery (negative terminal) before beginning work to avoid short circuits or accidental window movement.
- Remove the door trim panel carefully, then peel back the moisture barrier to access the window regulator and motor.
- Support the glass in the fully up position (use tape or a support tool) before loosening the regulator or motor mounting bolts.
- Disconnect the electrical connector to the motor, unbolt the motor from the regulator, and remove the assembly. Inspect the regulator for worn tracks or damaged cables at the same time.
- Install the new motor by reversing the removal steps: secure the motor to the regulator, reconnect the electrical plug, temporarily reconnect the battery and test window operation and folding function before reassembling the door trim.
- Lubricate the regulator tracks and pivot points with an appropriate white lithium or silicone-based grease for smoother operation and longer life.
Why This Part Commonly Fails
- Wear Of Internal Brushes And Commutator: Over time, carbon brushes and the commutator wear, reducing motor performance and causing intermittent or complete failure.
- Water Ingress And Corrosion: Moisture penetrating the door can corrode motor internals and electrical contacts, leading to reduced life or seizure.
- Mechanical Overload From Damaged Regulator: If the regulator (cables, sliders, or guides) is worn or jammed, the motor works against increased resistance and can burn out or strip plastic gears.
- Broken Plastic Gears Or Teeth: Many window motors use plastic gear sets that can fracture with age, freezing temperatures, or sudden impacts.
- Electrical Issues: Faulty switches, poor grounding, or intermittent connectors can mimic motor failure or cause excessive current draw that damages the motor.
For reliable replacement, match the OEM code (1137328127) and check physical connector and mounting compatibility with the vehicle’s right front door regulator. This part is intended for mechanics and experienced DIYers who are familiar with door disassembly and safe electrical practices. Replace the motor together with or after checking the regulator assembly to avoid repeat failures caused by worn mechanical parts.
