4R55E Shift Kit

Overview

This is a shift correction and reprogramming kit for the Ford, Lincoln, Mercury 4r55e automatic transmission. Built to OEM specification and engineered as a direct-fit replacement for a professional-grade 4r55e repair or rebuild. Every 4r55e order ships fast and is backed by our support team.

What's Included

• recalibrated valve-body springs and valves
• checkballs and separator-plate components as applicable
• step-by-step installation instructions

Fitment

Fits Ford, Lincoln, Mercury vehicles equipped with the 4r55e automatic transmission. Please confirm your transmission model and year before ordering to ensure correct fitment.

Common Symptoms & When to Use

Consider this 4r55e part when you experience:

• soft, mushy or delayed shifts
• slipping or shift flare between gears under load
• harsh or erratic shifts and shift-related codes
• clutch and band burnup on towing or high-power builds

Specifications

• Transmission: 4r55e

Quality & Service

In-stock parts ship fast; special-order items ship within 3 business days. Free shipping on orders over $70. Backed by Core Transmission Parts — your source for 4r55e transmission parts.