Complete plug-and-play Transmission Control Unit kit for Ford 4R70W/4R75W automatic transmissions.

**Features:**
– Pre-configured for 4-speed operation
– Standard Ford connector (no adapter harness needed)
– Mercury3 TCU compatibility
– Perfect for Windsor V8 swaps and common Ford builds
– Improved shift control over stock PCM

**What’s Included:**
– Mercury3 TCU unit
– Ford-specific wiring harness
– Installation manual
– USB tuning cable

**Applications:**
– Ford Windsor V8 swaps
– Updated 4R75W variants
– Performance builds
– Classic Ford truck and SUV conversions