1998-2004 Ford Mustang 3.8L 2WD
Core Charge: $250.00
4R70W 1998-2004 2WD TRANSMISSION 3.8L
All of our transmissions are fully remanufactured and are held to the highest and strictest industry standards. What this means to you is the fact you are getting a quality product that meets or exceeds the OEM standards, not just a part that is taken apart and “patched”. We ensure that all the current updates are performed, during reassembly each unit is ran through tests to ensure correct assembly and quality.
TransTec Overhaul Kit – Rubber Seals, Metal Clad Seals, Sealing Rings, Paper Gaskets
Master Rebuild Kit with all clutches and steels, name brand clutches such as Borg Warner or Raybestos
Filtran Brand Transmission Filter
Borg Warner Reverse & Overdrive Bands
Bonded Reverse & Overdrive Servos
Bonded 1/2 & 2/3 Accumulators/ Covers
Borg Warner or Raybestos Overdrive and Reverse Bands
Updated Sonnax Pressure Regulator Valve
Updated Sonnax Intermediate Spiral Sprag Snap Ring
Updated Sonnax Overdrive pin
Updated Superior Heavy Duty Separator Plate
Updates to the Transmission
- Updated Spiral Snap Ring Retainer:
Vehicles equipped with this transmission often experience premature failure of the intermediate roller clutch or mechanical diode during high-rpm conditions. Sonnax spiral retaining ring kit incorporates a spiral snap ring that is staked to a locking ring to ensure ring contact with groove during high-rpm conditions, eliminating blowout.
Wrap-around design maintains contact with groove bottom, Locking ring prevents spiral retaining ring expansion during high RPM
- Updated Sonnax Overdrive Pin:
Vehicles equipped with this transmission one of the common problems are intermediate roller clutch, overdrive band or forward clutch failure, traced to the O.D. servo pin wearing the case bore. The oil circuit which releases or holds the servo off is present as forward clutch oil in 1, 2, 3 ranges. If this release oil leaks through the case, it can cause the O.D. band to drag and/or forward clutches to overheat. If band overheating becomes extensive, it may not hold in 4th gear, which can allow a neutral condition and excessive roller RPM on a re-engagement of 4-2 downshift. The Sonnax Overdrive Servo Pin has two O-rings to positively seal against the piston I.D. and the case bore, eliminating oil circuit leaks.
- Updated Sonnax Main Pressure Regulator Valve:
Common issues with the 4R70/4R75 Transmission is a worn pressure regulator valve resulting in erratic line pressure, poor line rise. This can result in harsh or soft shifts and band/clutch failure as well as other drive ability concerns. Installing Sonnax main pressure regulator valve restores normal line pressure operation in all ranges. These closely toleranced parts are made from high-quality aluminum and have been specially hard-coated to eliminate excessive wear. Annular grooves have been added to the pressure regulator valve to allow an oil film to surround the valve, thus centering it in the bore to prevent side loading which causes premature wear.
This transmission comes with a 1 Year 36,000 Mile Warranty with the purchase of a new torque converter. We offer an extended Warranty 2 Year 50,000 Mile Warranty, or a 3 Year 100,000 Mile Warranty for an additional charge.
Buyer is required to swap a good core for this transmission otherwise there will be a core charge in addition to the above price. Core must NOT have obvious damage, otherwise there will be additional charges.
We also have Remanufactured Torque Converters available for $200 for OEM stall speed
Majority of units are in stock, if we do not have one in stock they are quickly available in most case, as little as one day. There are many different version of this transmission model available so please call for additional details.