Description
Product Overview
The WIT Torque Converter Lock‑Up Solenoid is engineered for automatic transmission systems that require precise fluid pressure regulation during gear changes. Crafted from high‑grade steel and heat‑resistant polymers, the unit delivers consistent performance under high‑temperature conditions. It conforms to the manufacturer part number 350‑0039, ensuring direct compatibility with a wide range of vehicle models. The solenoid’s compact design integrates easily into existing transmission housings without the need for extensive modifications.
Usage
Designed for both professional mechanics and experienced DIYers, this solenoid is suitable for routine transmission repairs, performance upgrades, and rebuild projects. It excels in high‑stress environments such as towing, off‑road driving, and heavy‑load applications where reliable lock‑up engagement is critical. Install the unit in any compatible transmission to restore smooth acceleration and improve fuel efficiency.

Why Choose Us
WIT’s reputation for manufacturing robust automotive components backs this solenoid’s quality. Each unit undergoes rigorous testing for pressure tolerance, electrical resistance, and durability, meeting or exceeding OEM standards. Our commitment to precision engineering means you receive a part that not only fits perfectly but also extends the service life of your transmission.
Key Features
- High‑strength steel coil for superior durability
- Heat‑resistant polymer housing to withstand extreme temperatures
- Exact 350‑0039 OEM fit for seamless installation
- Optimized fluid flow design for smoother gear transitions
- Rigorous quality testing ensures reliable long‑term performance
FAQ
What vehicles are compatible with this solenoid?
The solenoid matches the 350‑0039 OEM specification, fitting many makes and models that use WIT transmission parts. Check your vehicle’s service manual for the exact part number.
Can I install this part myself?
Yes, the solenoid is designed for straightforward replacement. Basic tools and a service manual are sufficient for a DIY installation.
How does the lock‑up function improve performance?
By engaging the lock‑up clutch, the solenoid reduces slippage, leading to smoother acceleration, better fuel efficiency, and reduced wear on transmission components.
Is this solenoid covered by a warranty?
WIT provides a one‑year limited warranty covering defects in materials and workmanship.
What maintenance is required after installation?
Regular transmission fluid checks and changes as per the vehicle’s service schedule will help maintain optimal solenoid performance.




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