4R75W Tcc Solenoid 2005-2008, new and ready to install. Fits the 4R75W. Ships fast from the USA.
A 2005-2008 Ford with the 4R75W that shudders at 45 mph, will not lock the converter on the highway, or sets P0741 usually gets a TCC solenoid on the parts list. This listing goes further than one solenoid. It is a complete solenoid service set for 2005-2008 units: the TCC (lockup) solenoid, the EPC solenoid and the dual shift solenoid assembly, along with a new filter and an updated bonded rubber pan gasket. The listing identifies the solenoids as Rostra 50076-S (TCC), 50122-S (EPC) and 52-0402-00 (dual shift). If you are already dropping the pan to change one solenoid, this covers every electrical actuator on the valve body in one job. Note that the product photo shows only the TCC solenoid.
The 4R75W is the heavier-duty version of the 4R70W, with the same four-speed layout and the same solenoid strategy. Two shift solenoids, SS1/A and SS2/B, select the gear; the EPC solenoid sets line pressure; and the TCC solenoid applies the converter clutch when the PCM commands lockup. When the TCC solenoid sticks or its O-rings leak, signal oil to the converter clutch control circuit is weak, the clutch slips instead of locking, and the PCM sees the slip. Because the EPC sets the pressure that ultimately feeds the converter clutch apply, a tired EPC solenoid can cause the same shudder, which is why replacing both together makes sense on a high-mileage unit.
Start with fluid condition; burnt Mercon V causes shudder all by itself. Then measure each solenoid at the case connector. Sonnax lists 20-30 ohms for each shift solenoid, 10-16 ohms for the TCC solenoid and 2-5 ohms for the EPC solenoid on this family. An electrical code covers the whole circuit, so check the harness and connector before blaming a solenoid. Our 4R70W solenoid testing guide shows the solenoid application chart, and the EPC solenoid guide covers pressure faults that look like slipping clutches. If every solenoid tests good and slip remains, the problem is in the valve body bores or the converter itself.
The listing covers 2005-2008 units and names the 4R70W, 4R75W and 4R75E. Sonnax notes that 2001-2008 valve bodies use solenoids that plug into a molded lead frame harness, while 2009-later units switched to a soft wire harness. That split is the key fitment check: compare your old solenoids and connectors with these before installing, or send us your year and VIN and we will confirm. For a 2009 or later unit, use the 2009-on 4R75W solenoid set. You can find everything else for this family on the 4R70W and 4R75W collection page.
If the bores are worn, a solenoid set will not hold pressure for long; the 4R75W valve body for 2001-2008 is the next step. A whining pump or low line pressure points to the 2003-2008 4R70W pump.
| Fits | 4R75W 2005-2008 |
| Part type | Tcc Solenoid |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. Despite the listing name, the set includes the TCC lockup solenoid, the EPC solenoid and the dual shift solenoid assembly, plus a filter and a bonded rubber pan gasket. The photo shows only the TCC solenoid.
The listing covers 2005-2008 4R70W, 4R75W and 4R75E units. Compare your old solenoids and lead frame connectors with the new parts, or send us your year and VIN.
Probably not. Sonnax notes that 2009-later units use solenoids on a soft wire harness instead of the 2001-2008 molded lead frame. Use our 2009-on solenoid set instead.
Sonnax lists 20-30 ohms for each shift solenoid, 10-16 ohms for the TCC solenoid and 2-5 ohms for the EPC solenoid on this family.
Mercon V ATF. Ford's fluid chart lists Mercon V for the 4R70W and 4R75W and advises against supplemental additives.
