The automatic transmission assembly with reference number 5M5P7000AB is designed for the 4F27E (Mazda designation FN4A-EL) 4-speed automatic transmission. Jointly developed by Ford and Mazda, this transverse front-wheel-drive unit is known for its compact design and reliability in compact and mid-size vehicles like the Ford Focus, Fiesta, Mazda 3, and Mazda 6.
Quick Specifications:
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Part Number: 5M5P7000AB (Ford OEM format)
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Transmission Model: 4F27E / FN4A-EL
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Type: 4-Speed Automatic
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Configuration: Transverse Front-Wheel Drive (FWD)
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Max Input Torque: ~270 Nm (390 lb-ft)
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Fluid Type: Mercon V ATF
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Fluid Capacity: ~6.5 - 7.5 Liters (dry fill)
Applications:
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Ford Focus (2000-2011, 2.0L/2.3L variants)
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Ford Fiesta (Select global markets and years)
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Ford EcoSport (Early generations, select markets)
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Ford Transit Connect (First generation)
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Mazda 3 (2004-2013, 2.0L/2.3L variants)
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Mazda 6 (2003-2008, 2.3L variants)
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Mazda 5 (2006-2010, 2.3L variants)
Complete Assembly Includes:
✅ Transmission case with planetary gear sets
✅ Torque converter with lock-up clutch
✅ Valve body with shift solenoids and pressure regulators
✅ Oil pump, filter, clutch packs, and bands
✅ Input/Output speed sensors and sealing gaskets
Note: Mounts, shift cables, cooler lines, and axles may need to be transferred from the original unit.
Key Features:
✅ Proven 4-speed architecture optimized for compact and mid-size vehicles.
✅ Joint Ford/Mazda engineering ensuring broad parts availability and serviceability.
✅ Lock-up torque converter for improved highway fuel efficiency.
✅ Electronic shift control for smoother gear transitions.
✅ Compatible with widely available Mercon V fluid.
Technical Notes:
Critical Installation Requirements:
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Fluid Specification: Must use Mercon V ATF. Using incorrect fluid (like Mercon LV or standard Dexron) will cause immediate shift quality issues and clutch damage.
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Cooler Flushing: The transmission cooler and lines must be thoroughly flushed to remove metallic debris from the failed unit.
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Torque Converter: Ensure the torque converter is fully seated into the transmission oil pump before mating to the engine to prevent catastrophic pump failure.
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Shift Linkage: Verify proper adjustment of the manual valve linkage to ensure the transmission is accurately in Park/Neutral when the shifter indicates so.
Common Issues & Maintenance:
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Rear Cover Wear: Early 4F27E models are notorious for the rear cover wearing out, leading to a loss of reverse and overdrive. Ensure the replacement unit features the upgraded, reinforced rear cover.
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Forward/Reverse Clutch Wear: Aggressive driving or low fluid levels can burn out the forward or reverse clutches.
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Valve Body Sticking: Debris can cause shift solenoids to stick, resulting in harsh shifts or flare. Regular fluid changes prevent this.
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Fluid Changes: Regular Mercon V fluid changes (every 50,000–60,000 km) are highly recommended to extend the life of the clutches and bands.