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WAI 388747 Window Motor and Regulator Assembly - Rear Left
| Brand | WAI 388747 |
|---|---|
| Position | Rear Left |
| Gear Material | Steel |
| Attachment Type | Bolt |
| Regulator Included | Yes |
| Mounting Hardware Included | No |
| Motor Included | Yes |
| Terminal Quantity | 2 |
| Installation Instructions Included | Yes |
| Anti-Pinch Motor | No |
| Description | Power window motor and regulator assembly |
| DOOR PANEL INCLUDED | No |
| EXPRESS UP OR DOWN | No |
| INCLUDES CIRCUIT BREAKER | Included |
| MEET OR EXCEEDS OEM SPECS | Yes |
| NEW OR REMANUFACTURED | New |
| Fits | Lexus · 5 vehicles |
OE-level fit. Built to meet or exceed original manufacturing and performance specifications.
Complete assembly. Motor and regulator are included for a streamlined replacement.
Steel gear design. Precision-engineered construction supports consistent window operation.
Overview
This WAI window motor and regulator assembly is a direct-fit replacement for the rear left door on compatible Lexus IS300 models. Built as a new assembly with the motor and regulator included, it is engineered to meet or exceed OE specifications for fit and performance.
Part number 388747 is a practical choice when restoring smooth power window operation on the Lexus IS300. The bolt-on attachment style and 2-terminal electrical connection support straightforward replacement.
Key Features
- New power window motor and regulator assembly
- Steel gear material for durable operation
- Motor and regulator included in one assembly
- Meets or exceeds OEM specifications
- Bolt attachment type for direct-fit service
- Circuit breaker included
- Installation instructions included
Detailed Description
WAI 388747 is a rear left window motor and regulator assembly for 2001-2005 Lexus IS300 applications. It combines the regulator and motor into one replacement unit, helping restore window movement when the original assembly has worn gears, a failed motor, or binding regulator components. The steel gear construction and precision-engineered design support consistent operation and proper fit.
WAI manufactures this part as a new assembly using high-grade materials and OE-level performance targets. Part number 388747 is backed by a limited lifetime warranty and is built for direct installation in the specified Lexus IS300 fitment.
What It Helps Fix
- Slow or inoperative power window movement
- Grinding or slipping from worn regulator gears
- Window that stops before fully opening or closing
- Electrical failure in the window motor assembly
- Binding or uneven window travel
Installation Notes and Tips
Fits 2001-2005 Lexus IS300, rear left. Verify the 2-terminal connector, bolt attachment style, and rear left position before installation. Installation instructions are included, and the assembly is intended to replace the existing motor and regulator unit without modifying the door structure.
Quality Assurance
WAI states this assembly is manufactured to meet or exceed OE manufacturing and performance specifications. Part number 388747 is a new component and includes a limited lifetime warranty.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2005 | Lexus | IS300 | Rear Left | — |
| 2004 | Lexus | IS300 | Rear Left | — |
| 2003 | Lexus | IS300 | Rear Left | — |
| 2002 | Lexus | IS300 | Rear Left | — |
| 2001 | Lexus | IS300 | Rear Left | — |
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