Collapsible content

Caution - Please Read

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.

(877) 782-558

Skip to product information
1 of 3


4R100 E4OD Line Pressure Modulator Plunger Valve Kit Sonnax 36948-03K .331"

Regular price $25.00 USD
Regular price Sale price $25.00 USD
Sale Sold out
Shipping calculated at checkout.
img{max-width:100%}4R100 E4OD Line Pressure Modulator Plunger Valve Kit Sonnax 36948-03KSome 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.Sleeve is manufactured from carbon steel to prevent excessive wear.Valve is made from hardened alloy steel for better wear resistance.O-ring helps prevent EPC oil loss.Annular grooves center valve in sleeve and eliminate sideloading.Improves shift firmness.Note6- & small 8-cylinder applications: .331"ContentsPlunger ValveSleeveO-RingSpecsDia.: 0.331"Please match up before purchasingParts ship daily from our distribution center.FREE SHIPPING on US OrdersIn a hurry - expedited shipping is available for this itemGOT QUESTIONS on your specific Year/Make/Model?Send us a message in eBay ¿Habla español? Escríbanos con el año, la marca, y el modelo de su vehículo. Visit My eBay Store: Phoenix Transmission Parts For all of your Automatic Transmission Part needs Be sure to add me to your favorites list!