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Remember, transmissions have variations based on year, make, model and engine size, as well as for 2WD, AWD, 4x4, gas, diesel or hybrid and in some situations half years.  We encourage you to chat or call toll free with one of our knowledgeable staff members that will assist you in finding the correct part the first time and answer any questions you may have regarding parts for your build. Our goal simply put, is to get you moving with one order.

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4T40E 4T45E Transmission Boost Valve Assembly Sonnax 33886-03K

Regular price $46.00 USD
Regular price Sale price $46.00 USD
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4T40E 4T45E Transmission Boost Valve Assembly Sonnax 33886-03KThe boost valve assembly is activated by torque signal pressure from the pressure control solenoid and reverse pressure to aid in adjusting line pressure at the pressure regulator valve. This boost valve is continuously oscillating in the sleeve, which leads to wear and hydraulic leakage. When wear occurs, critical oil pressure is allowed to cross leak between the circuits or leak to exhaust. These leaks can result in either no line rise or an unwanted increase in line pressure. Sonnax offers a replacement boost valve assembly 33886-03K that restores the hydraulic integrity and controls line rise.Replacement boost sleeve delivers oil 360√ā¬į around the valve, reducing side load.Sleeve is manufactured from highly wear-resistant aluminum.Valve is made from anodized aluminum.Tight tolerances on the sleeve and valve maintain an ideal fit that prevents leakage.ContentsBoost ValveSleeve¬†APPLICATIONS Century 2005 V6 3.1L 4 Spd FWDLeSabre 2004-2005 V6 3.8L 4 Spd FWDSkylark 1997 L4 2.4L 4 Spd FWDCavalier 1995-2006 L4 2.2L 2.3L 2.4L 4 Spd FWDCobalt 2005-2010 L4 2.0L 2.2L 2.4L 4 Spd FWDHHR 2006-2011 L4 2.0L 2.2L 2.4L 4 Spd FWDMailbu 1997-1999 L4 2.4L 4 Spd FWDMalibu 1998-2005 L4 2.4L; V6 3.1L 4 Spd FWDMalibu, Malibu Maxx 2004-2011 L4 2.2L 2.4L; V6 3.5L 4 Spd FWDAlero 1999-2004 L4 2.2L 2.4L 4 Spd FWDAlero 1999-2004 V6 3.4L 4 Spd RWDCutlass 1997-1999 V6 3.1L 4 Spd FWDGrand Am 1999-2004 L4 2.2L 2.4L 4 Spd FWDGrand Am 1999-2006 V6 3.4L 4 Spd FWDG5 2007-2010 L4 2.2L 2.4L 4 Spd FWDG6 2005-2010 L4 2.4L; V6 3.5L 4 Spd FWDPursuit 1995-2006 L4 2.2L 2.4L 4 Spd FWDSunfire 1995-2006 L4 2.2L 2.4L 4 Spd FWDAura 2007-2008 V6 3.5L 4 Spd FWDAura 2007-2008 L4 2.4L 4 Spd FWDIon 2005-2007 L4 2.2L 2.4L 4 Spd FWDL300 2003-2004 L4 2.2L 4 Spd FWDL300 2003-2006 V6 3.0L 4 Spd FWDLS 2000-2002 L4 1.9L 2.2L 4 Spd FWDLS 2000-2002 V6 3.0L 4 Spd FWDLW 2000-2002 L4 2.2L 4 Spd FWDLW 2000-2002 V6 3.0L 4 Spd FWDVue 2005-2009 L4 2.2L 2.4L 4 Spd FWD Parts ship daily from our distribution center.FREE SHIPPING¬†on Continental US OrdersGOT QUESTIONS¬†on your specific Year/Make/Model?¬† Send us a message √ā¬ŅHabla espa√ɬĪol? Escr√ɬ≠banos con el a√ɬĪo, la marca, y el modelo de su veh√ɬ≠culo. WARRANTY requests need to be accompanied with the appropriate code as diagnosed by a professional transmission shop. ¬†Vehicles must be professionally diagnosed for solenoid failure prior to purchase. ¬†We cannot guarantee any one item will fix all transmission problems. ¬†Solenoid failure is often accompanied by additional failures; for example valve body failures, internal wear or damaged hard parts. ¬†Packaged for wholesale distribution to professional transmission shops¬† ¬†Visit My eBay Store: Phoenix Transmission Parts¬†for all of your Automatic Transmission Part needs.Check out my other items!Be sure to add me to your favorites list!