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)
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Line Pressure Booster Kit4L80-E, 4L85-E Valve Sleeve Pressure Regulator Spring O-Rings (2)Sonnax Hydraulic Line Pressure Booster Kits Contain Stronger Pressure Regulator Springs And Large Ratio Boost Valves Designed To Work Together To Provide Progressive Pressure Increases As Driving Conditions Become More Demanding.Our Pressure Regulator Springs Are Approximately 10 Stronger Than Oe And More Conservative In Impact Than Other Aftermarket Kit Springs. Large Ratio Boost Valves Provide Higher Pressure Incrementally And When It Is Needed The Most. The Combination Of These Springs And Valves In A Sonnax Kit Gives You The Best Of Both Worlds: A Modest Pressure Increase At The Low End, With A High-End Pressure That Is Equal To Or Greater Than That Of Other Aftermarket Kit Springs.Achieve Shorter Shifts And Increased Torque Capacity Without Creating Low-Speed Harshnessimproved Band And Clutch Holding Capacity For Increased Durabilityprogressive Pressure Increase As Driving Conditions Become More Demandingall The Benefits Of Increased Line Pressure Without Overloading The Pump At Idlesimple And Affordable Drop-In Solution With No Special Tools Or Reaming Required.
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 vehicles are compatible with the Line Booster Kit?A: The Line Booster Kit is specifically designed for 4L80-E and 4L85-E transmissions, ensuring optimal compatibility and performance.
Q: How does the Line Booster Kit improve shifting performance?A: This kit achieves shorter shifts and increased torque capacity by providing progressive pressure increases as driving conditions become more demanding, enhancing overall driving experience without causing low-speed harshness.
Q: What are the benefits of using Sonnax pressure regulator springs?A: Sonnax pressure regulator springs are approximately 10% stronger than OE springs, providing a modest pressure increase at low speeds while offering high-end pressure equivalent to or greater than other aftermarket options, resulting in improved performance and durability.
Q: Is installation of the Line Booster Kit complicated?A: No, the Line Booster Kit offers a simple and affordable drop-in solution that requires no special tools or reaming, making installation straightforward.
Q: Will the Line Booster Kit overload my pump at idle?A: No, the kit is designed to provide all the benefits of increased line pressure without overloading the pump at idle, ensuring reliable performance across various operating conditions.
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