Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
- No EU import duties. - Ships within 3-5 business days. (USA) - Ships with 8-12 business days. (International)
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For more information, visit www.P65Warnings.ca.gov.
Some E4OD, 4R100 transmissions have soft 1-2 or 2-3 shifts, intermittent harsh shifts or poor line rise complaints. These can be caused by ECU (electronic control unit) or accumulator pressure problems. Severe wear of the line pressure modulator sleeve allows EPC (electronic pressure control) oil to leak past the valve and cause soft shifts. Severe wear can also cause the valve to stick or hang up, causing harsh shifts. Sonnax offers four size variations of the line pressure modulator sleeve and valve kit that eliminate this oil loss problem.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What symptoms indicate a problem with the E4OD or 4R100 transmission that this Sonnax valve can fix?A: Common symptoms include soft 1-2 or 2-3 shifts, intermittent harsh shifts, and poor line rise complaints. These issues can stem from ECU problems or severe wear of the line pressure modulator sleeve.
Q: How does the Sonnax Line Pressure Modulator Valve improve transmission performance?A: The Sonnax valve and sleeve kit eliminates oil loss, which helps to prevent soft shifts and reduces the chances of the valve sticking, ultimately improving shift firmness and overall transmission performance.
Q: Is the Sonnax Line Pressure Modulator compatible with all E4OD and 4R100 transmissions?A: While the Sonnax Line Pressure Modulator Valve is designed for certain E4OD and 4R100 transmissions, it's important to verify compatibility with your specific vehicle model and year to ensure optimal performance.
Q: What materials are used in the construction of the Sonnax valve and sleeve?A: The sleeve is made from carbon steel to enhance durability and prevent excessive wear, while the valve itself is crafted from hardened alloy steel for improved wear resistance.
Q: How can I install the Sonnax Line Pressure Modulator Valve, and do I need specialized tools?A: Installation typically requires basic automotive tools and mechanical knowledge. However, for best results, it's recommended to consult a professional mechanic to ensure proper installation and functionality.
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