Ford E4OD/4R100 Cooler By-Pass Valve Assembly fits 99+

E4OD/4R100 Cooler By-Pass Valve Assembly – Compatible for Ford Super Duty 1999-Up

Protect your E4OD or 4R100 transmission from cold-weather problems and pressure loss with this complete cooler by-pass valve assembly from Stellar Automotive Group.

In cold climates, the factory by-pass valve often sticks or fails, causing overcooling, thick fluid, delayed/harsh shifts, or low line pressure. This direct-replacement assembly restores proper thermal regulation, ensures consistent fluid flow to the cooler, and prevents common cold-start issues while maintaining optimal operating temperature.

Perfect fit for 1999-2004 models including:

• Ford F-250, F-350, F-450, F-550 Super Duty
• Ford Excursion
• Ford E-Series vans
• 7.3L Power Stroke & other 4R100 applications

Common symptoms this valve assembly resolves:

• Harsh or delayed shifts when cold
• Thick/slow fluid movement at startup
• Low line pressure in winter conditions
• Cooler line freezing or pressure-related codes

Easy installation – replace during cooler line service or rebuild. Professional installation recommended.

Add this essential E4OD/4R100 cooler by-pass valve to your cart today and keep your Super Duty shifting strong year-round!