Is it worth repairing or replacing the transmission on a 2003 Mercury Mountaineer?

As a general rule of thumb, a transmission replacement on a 2003 Mercury Mountaineer (mid-size sedan segment, vehicle value roughly $2,500–$3,000) is usually worth it when the installed cost stays under about $1,250 — roughly 50% of what the vehicle is worth.

What years of Mercury Mountaineer does a remanufactured or new transmission fit?

Based on vendor-verified fitment data across 103 listed transmissions, remanufactured and new transmissions for this model cover the 1997–2010 model years. Always confirm your exact VIN or engine/transmission code before ordering, since fitment can vary by submodel or engine.

2003 Mercury Mountaineer Transmissions

Remanufactured transmissions that fit the 2003 Mercury Mountaineer. Each unit below is matched to this vehicle, warranty-backed, and shipped with freight quoted at checkout from Peak Powertrain.

Available Transmissions (9)

5R55S Automatic Transmission Assembly
Price
$2,467.00
Condition:
remanufactured
5R55S Automatic Transmission Assembly
Price
$2,467.00
Condition:
remanufactured
5R55S Remanufactured Automatic Transmission
Price
$2,914.00
Engine:
4.6L
Condition:
remanufactured

2003 Mercury Mountaineer Transmissions

Available Transmissions (9)

5R55S Automatic Transmission Assembly

5R55S Automatic Transmission Assembly

5R55S Remanufactured Automatic Transmission

2003 Mercury Mountaineer Transmission Market Context

Is replacing the transmission worth it?

Frequently Asked Questions

5R55S Remanufactured Automatic Transmission

5R55S Remanufactured Automatic Transmission

5R55S Remanufactured Automatic Transmission

Used Transmission

Used Transmission

Other Mercury Mountaineer Years