1. Product Overview
This manual provides essential information for the POPSTORE U340E U341E Transmission Valve Body. This component is a critical part of your vehicle's automatic transmission system, designed to regulate hydraulic pressure and fluid flow to control gear changes. It is a refurbished replacement part manufactured from high-quality aluminum, ensuring durability and reliable performance.
The package includes one (1) refurbished transmission valve body.
2. Vehicle Compatibility
The U340E U341E Transmission Valve Body is compatible with various Toyota and Scion models. Please verify your vehicle's specific model, year, and engine size against the list below to ensure proper fitment. The part numbers for this valve body are U340E, U341E, and U341F.

This image illustrates the transmission valve body and lists compatible vehicle models, including Toyota Celica, Corolla, Echo, Scion xA/xB, and Yaris, with specific engine sizes and years.
- Toyota Celica GT 1.8 Litre FWD U341E (2000-2005)
- Toyota Corolla 1.8 Litre FWD U340E (2008-On)
- Toyota Echo 1.5 Litre FWD U340E (2000-2005)
- Toyota 1.8 Litre AWD U341F (2003-On)
- Toyota 1.8 Litre FWD U341E (2007-On)
- Toyota Scion xA/xB 1.5 Litre FWD U340E (2004-2007)
- Toyota Scion 1.8 Litre FWD U341E (2008-On)
- Toyota Yaris 1.5 Litre FWD U340E (2006-On)
- Toyota Yaris 1.6 Litre FWD U341E (2006-On)

This image confirms the replacement part numbers: U340E, U341E, and U341F.
3. Installation Guidelines (Setup)
Installation of a transmission valve body requires specialized automotive knowledge and tools. It is highly recommended that this component be installed by a qualified and certified automotive technician to ensure correct procedure and vehicle safety. Improper installation can lead to transmission damage or malfunction.
General Steps (Consult Service Manual for Specifics):
- Preparation: Ensure the vehicle is safely lifted and supported. Disconnect the battery.
- Drain Transmission Fluid: Carefully drain the transmission fluid into a suitable container.
- Remove Transmission Pan: Remove the transmission pan and filter.
- Disconnect Electrical Connectors: Disconnect all electrical connectors attached to the existing valve body.
- Remove Old Valve Body: Unbolt and carefully remove the old transmission valve body. Note the position of all components and bolts.
- Install New Valve Body: Position the new POPSTORE valve body, ensuring all passages align correctly. Secure it with the appropriate bolts, tightening to manufacturer specifications.
- Reconnect Electrical Connectors: Reconnect all electrical connectors securely.
- Install New Filter and Pan: Install a new transmission filter and reattach the transmission pan with a new gasket, tightening bolts to specifications.
- Refill Transmission Fluid: Refill the transmission with the correct type and amount of fluid as specified by the vehicle manufacturer.
- Test Operation: After installation, perform a thorough test drive to ensure proper transmission function and check for leaks.

This image emphasizes the quality of the replacement part, noting its adherence to OEM standards, strict quality control, reliability, durability, exact fit, and ease of installation.
4. Operation and Function
The transmission valve body is an internal component of the automatic transmission. Its primary function is to direct hydraulic fluid to various clutches and bands within the transmission, enabling smooth and precise gear changes. It operates based on signals from the vehicle's Transmission Control Module (TCM) or Powertrain Control Module (PCM), which interpret sensor data (e.g., vehicle speed, engine load, throttle position) to determine the optimal gear ratio.
Once installed, the valve body works automatically as part of the transmission system. No direct user operation is required for this component.

This image provides multiple views of the transmission valve body, showcasing its design and various ports from different perspectives.
5. Maintenance
The transmission valve body itself typically does not require routine maintenance. Its longevity and proper function are heavily dependent on the overall health of the transmission system, particularly the quality and cleanliness of the transmission fluid.
Key Maintenance Practices for Transmission Health:
- Regular Fluid Checks: Periodically check the transmission fluid level and condition. Refer to your vehicle's owner's manual for recommended intervals and fluid type.
- Fluid Changes: Adhere to the manufacturer's recommended schedule for transmission fluid and filter changes. Dirty or degraded fluid can cause premature wear and malfunction of internal transmission components, including the valve body.
- Use Correct Fluid: Always use the specific type of transmission fluid recommended by your vehicle manufacturer. Using incorrect fluid can lead to severe damage.
- Address Leaks Promptly: Any transmission fluid leaks should be inspected and repaired immediately to prevent low fluid levels and potential damage.

This image provides detailed close-up views of various sections of the transmission valve body, highlighting its intricate internal mechanisms and solenoids.
6. Troubleshooting
If you experience issues with your vehicle's transmission after installing this valve body, or if you suspect a problem with the component, consider the following general troubleshooting steps. Due to the complexity of transmission systems, professional diagnosis is always recommended.
Common Symptoms of Valve Body Issues:
- Harsh or delayed shifting
- Slipping gears
- Transmission getting stuck in a particular gear
- Check Engine Light (CEL) illuminated with transmission-related fault codes
- Unusual noises from the transmission
Troubleshooting Steps:
- Check Fluid Level and Condition: Ensure the transmission fluid is at the correct level and is clean, not burnt or discolored.
- Scan for Diagnostic Trouble Codes (DTCs): Use an OBD-II scanner to check for any stored transmission-related fault codes. These codes can provide valuable clues about the nature of the problem.
- Inspect Electrical Connections: Verify that all electrical connectors to the valve body and transmission sensors are securely attached and free from corrosion.
- Review Installation: If recently installed, double-check all installation steps, bolt torques, and component alignments.
- Professional Diagnosis: If symptoms persist, seek diagnosis from a qualified automotive technician. They have specialized equipment and expertise to accurately identify and resolve transmission issues.
If you are unsure about any aspect of troubleshooting or repair, please contact us for assistance.
7. Specifications
Detailed specifications for the POPSTORE U340E U341E Transmission Valve Body:
| Feature | Detail |
|---|---|
| Part Numbers | U340E, U341E, U341F |
| Material | Aluminum |
| Exterior Finish | Aluminum |
| Inlet Connection Type | Threaded |
| Number of Ports | 6 |
| Number of Packs | 1 |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Thread Type | Standard |
| Thread Size | 1/8" NPT |
| Valve Type | Valve Body |
| Model Number | U341 |
| UPC | 754003635645 |
| ASIN | B0CL9397JF |

This image displays the transmission valve body along with its approximate dimensions: 29 cm (11.41 inches) in length and 24 cm (9.44 inches) in height. It also indicates that the package contains 1 x Transmission Valve Body.
8. Warranty and Support
For any questions regarding the product, installation, or potential issues, please contact POPSTORE customer support. We are committed to providing the highest standard of after-sales service to every customer.
Please refer to your purchase documentation or the seller's platform for specific warranty terms and conditions applicable to this product.