5R55E Transmission for Sale | OEM Used Ford Electronic 5-Speed Automatic Introduced 1997 for the Explorer, Ranger, Mountaineer

Description

About the 5R55E Transmission

You have come to the right place if you are hunting for a reliable and affordable transmission solution for your Ford Explorer, Ford Ranger, Mercury Mountaineer, or Ford Aerostar from the 1997 to 2001 model year range. Our selection of used 5R55E transmissions for sale at Part Nests offers the perfect combination of quality, compatibility, and value. Whether you are a DIY enthusiast or a professional mechanic, we have the right 5R55E transmission for sale to get your vehicle back on the road with confidence.

Understanding the 5R55E Transmission

The 5R55E transmission, introduced by Ford in 1997, is a 5-speed electronically-controlled automatic known for its performance and adaptability across various Ford SUV and small truck applications. The naming convention tells the story: 5 speeds, Rear-wheel drive (or RWD-based 4WD), 55 series casting, Electronic shift controls. With electronic adaptive shift strategy and five forward gears (including overdrive 5th at 0.71:1), it offers smooth shifts and reasonable highway fuel economy for the era. Its robust design enables it to handle moderate loads effectively, making it the workhorse transmission for Ford 4.0L Cologne V6-equipped trucks and SUVs from the late 1990s through 2001. This used 5R55E transmission for sale at Part Nests with its reliability and adaptive characteristics has solidified its reputation among Ranger, Explorer, and Mountaineer owners and mechanics alike.

Critical Disambiguation: 5R55E vs 5R55W vs 5R55S vs 5R55N

Before you order, please understand the most important point about this transmission: there are FOUR similar but DIFFERENT Ford 5-speed automatic transmissions that customers often confuse. Choosing the wrong variant will result in a transmission that physically may bolt up but will not function correctly with your vehicle PCM and shift solenoid configuration.

The Four Ford 5-Speed Automatic Variants

• 5R55E (this listing): Original Electronic version, used 1997 to 2001 in:
• Ford Explorer (1997 to 2001)
• Ford Ranger (1997 to 2001)
• Mercury Mountaineer (1997 to 2001)
• Ford Aerostar (1997, final year)
• Paired with 4.0L Cologne V6 (OHV pushrod and later SOHC)
• 5R55W (Wide-ratio): Used 2002 to 2005 primarily in:
• Ford Explorer (2002 to 2005)
• Mercury Mountaineer (2002 to 2005)
• Paired with 4.0L SOHC V6
• 5R55S (Synchronous): Used 2002 to 2010 in:
• Ford Explorer Sport Trac (2002 to 2010)
• Ford Explorer Sport (2002 to 2003)
• Ford Mustang V6 (2005 to 2010), note: this is NOT a 5R55E despite some aftermarket listings claiming so
• Mazda B4000 / B3000 (some variants)
• Lincoln Aviator (2003 to 2005, the first-gen Aviator)
• 5R55N (the rear-wheel-drive version of the AX4N front-wheel-drive design): Used 2000 to 2008 in:
• Lincoln LS (2000 to 2006)
• Jaguar S-Type (2000 to 2008)
• Jaguar XF (some early models)

If you are not sure which variant you need, call (855) 634-4447 with your vehicle year, make, model, and engine information, and we will direct you to the correct listing.

Modern Electronic Automatic Transmission Family Context

The 5R55E (this listing) is the Ford electronically-controlled 5-speed automatic for the late-1990s through 2001 Explorer / Ranger / Mountaineer with 4.0L Cologne V6 powertrain. For buyers comparing modern electronic automatic transmissions across OEMs and platforms: the 5R55E (this listing, Ford 5-speed with electronic adaptive shift strategy, overdrive 5th gear 0.71:1, 31-spline output 23-spline input, torque converter lockup, used in Explorer / Ranger / Mountaineer / Aerostar 1997-2001 with 4.0L OHV or SOHC Cologne V6) is the Ford light-duty electronic 5-speed. For GM applications (different platform and OEM), the GM 4L60E (our vaz151 listing, electronically controlled 4-speed automatic with overdrive 4th gear 0.70:1 and lock-up torque converter built on the 700R4 architecture, 360 lb-ft torque rating, used in Silverado / Sierra / Tahoe / Suburban / Camaro / Firebird / Corvette 1993-2006) is the GM RWD light-duty electronic automatic alternative. Two different OEM electronic automatic philosophies: Ford 5R55E for Explorer / Ranger compact-truck SUV applications; GM 4L60E per vaz151 for the broader GM RWD light-duty truck and muscle car lineup. Both feature electronic shift solenoid control and lockup torque converters, but they are completely different transmissions with different bellhousing patterns and ECM communication protocols.

Key Features of the 5R55E Transmission

• Five-Speed Configuration: Offers five forward gears (deep 3.22:1 first, 0.71:1 overdrive fifth), providing a wider range of gear ratios compared to older four-speed transmissions like the 4R55E. This enhances both performance and fuel efficiency.
• Electronic Controls: Utilizes electronic shift controls via the Ford PCM (powertrain control module) for precise and adaptive shifting.
• Durability: Robust design capable of handling the 4.0L Cologne V6 torque output reliably over extended periods. Many 5R55E units have provided 200,000 plus miles of service with proper maintenance.
• Smooth Shifting: Provides reasonably smooth shifts for the era.
• Adaptive Shift Strategy: Incorporates adaptive shift algorithms that learn and adjust to driving habits and conditions.
• Torque Converter Lockup: Features a torque converter lockup mechanism that improves fuel efficiency by reducing slippage and maximizing power transfer during cruising speeds.
• Overdrive Capability: Includes an overdrive 5th gear (0.71:1), which lowers engine RPM at highway speeds.
• Transmission Temperature Sensor: Most 5R55E variants include a transmission temperature sensor.
• Modular Design: Designed with modularity in mind, making maintenance and repairs more straightforward and cost-effective.

The 5R55E Transmission Vehicle Applications (Original 1997 to 2001 Production)

Primary Applications:

• Ford Explorer (1997 to 2001): 4.0L OHV and SOHC V6 with 4WD or 2WD
• Ford Ranger (1997 to 2001): 4.0L OHV and SOHC V6 with 4WD or 2WD (some 4-cylinder 5R55E applications also exist)
• Mercury Mountaineer (1997 to 2001): Mountaineer is the badge-engineered Explorer with 4.0L V6
• Ford Aerostar (1997): Last year of Aerostar production used the 5R55E in some configurations

Mazda Cross-Branded Applications:

• Mazda B4000 (1997 to 2001): Mazda badge-engineered Ranger
• Mazda B3000 (1997 to 2001): 3.0L Vulcan V6 variant (some with 5R55E, some with different transmission)

Engine Compatibility:

The 5R55E was designed specifically for the Ford Cologne V6 engine family (named for the Cologne, Germany plant where it was originally developed):

• 4.0L OHV Cologne V6 (1997 to 2000 in Ranger / Explorer): Pushrod design, approximately 160 to 205 HP
• 4.0L SOHC Cologne V6 (1997 to 2001 introduction in Explorer, later in other applications): Single overhead cam variant, up to approximately 245 HP and 280 lb-ft
• 2.3L OHC I4 (Ranger only): Some 2.3L Ranger applications used the 5R55E

Engines that are NOT Compatible with the 5R55E:

• Ford Essex 3.8L V6: Different engine family, used in older Mustangs and Windstars, not paired with 5R55E
• “Ford Barra engine”: The Barra is an Australian-built 4.0L inline-6 used in the Australian Ford Falcon, NOT a US Explorer engine and not paired with 5R55E
• Ford Duratec 2.3L I4 in Mustang: The Mustang Duratec applications used different transmissions

If you see these engines listed in 5R55E descriptions, the information is incorrect.

Why Choose a Used 5R55E Transmission

• Cost-effective solution compared to new transmissions or full rebuilds
• Environmentally friendly choice, reducing waste by reusing functional units
• Opportunity to maintain the original specifications of your vehicle with the correct factory-applicable transmission
• No core charge required, so no return shipping hassles

Vehicle Compatibility

Why Buy From Part Nests

• Transmission variant verified (avoid receiving wrong 5R55 variant)
• Donor vehicle and year documented
• Engine pairing confirmed (4.0L Cologne V6 specific)
• All 5 gears tested before shipping
• 2WD vs 4WD configuration documented
• Free freight pallet delivery to all 50 states
• 15 day replacement warranty on internal defects
• Ford Explorer / Ranger experienced support team
• Cross-reference assistance for 5R55W / 5R55S / 5R55N customers
• Call (855) 634-4447 to confirm Ford 5R55E transmission (Original Electronic 5-speed automatic 1997-2001, NOT 5R55W Wide-ratio 2002-2005 used in Explorer / Mountaineer with 4.0L SOHC, NOT 5R55S Synchronous 2002-2010 used in Explorer Sport Trac / Mustang V6 / Lincoln Aviator, NOT 5R55N rear-wheel-drive AX4N derivative 2000-2008 used in Lincoln LS / Jaguar S-Type), donor vehicle (Ford Explorer 1997-2001 with 4.0L OHV or SOHC V6 in 2WD / 4WD, Ford Ranger 1997-2001 with 4.0L V6 or some 2.3L I4 applications, Mercury Mountaineer 1997-2001 badge-engineered Explorer, Ford Aerostar 1997 final year, or Mazda B4000 / B3000 1997-2001 badge-engineered Ranger), engine pairing (4.0L OHV Cologne V6 1997-2000 pushrod design 160-205 HP, 4.0L SOHC Cologne V6 1997-2001 single overhead cam up to 245 HP / 280 lb-ft, or 2.3L OHC I4 Ranger applications), 2WD vs 4WD output configuration, input shaft 23-spline, output shaft 31-spline, electronic solenoid pack function, torque converter lockup operation, overdrive 5th gear 0.71:1 engagement, and modern electronic automatic context (5R55E Ford light-duty Explorer / Ranger vs 4L60E per vaz151 GM RWD light-duty for Silverado / Sierra / Tahoe / Camaro / Firebird / Corvette, different OEM platforms with different bellhousing patterns and ECM protocols) before ordering