The 6R80 (six-speed) and 10R80 (ten-speed) are Ford's modern automatics. Found in F-150, Mustang, Expedition, and others. Both are stout designs but have specific failure patterns. Here's what you need to know.
6R80 basics
- 6-speed automatic
- Years: 2009-2017 production
- Applications: F-150, Mustang, F-250 (some), Expedition, Lincoln Navigator
- Torque capacity: ~600 ft-lb stock
- ZF design: Made by ZF (Germany)
- Weight: ~185 lbs
10R80 basics
- 10-speed automatic
- Years: 2017+ production
- Applications: F-150, Mustang, F-250 (some), Expedition, Mustang Mach 1
- Torque capacity: ~800 ft-lb stock
- Co-designed: GM 10L80 shares architecture
- Weight: ~210 lbs
6R80 common failures
1. Direct clutch wear
The direct clutch is high-stress and wears predictably.
Fix: HD direct clutch during rebuild.
2. C clutch (overdrive) wear
Overdrive clutch sees high stress in highway tow.
Fix: HD C clutch pack.
3. Solenoid pack failure
Internal solenoid pack fails at 80-150K miles.
Fix: OEM or quality replacement solenoid pack.
4. TCC apply piston wear
Same family of issues as other automatic transmissions.
Fix: TCC apply piston replacement during rebuild.
5. Pump bushing wear
Standard high-mileage wear item.
Fix: Pump bushing kit during rebuild.
6. Valve body bore wear
Aluminum bore wear over time.
Fix: Bore correction kits if available, or valve body replacement.
7. TCM software issues
Some 6R80s have shift quality issues from TCM software. Updates available from Ford.
10R80 common failures
1. Solenoid pack failure
The 10R80 has more solenoids than 6R80. Failure modes similar but more components.
Fix: OEM replacement solenoid pack.
2. Direct clutch wear
Highest-wear clutch in 10R80.
Fix: HD direct clutch during rebuild.
3. C2 clutch wear
Similar wear pattern to 6R80 C clutch.
Fix: HD C2 clutch pack.
4. Valve body wear
Complex valve body. Multiple wear points possible.
Fix: Sonnax bore correction kits (limited availability for 10R80).
5. Internal seal failures
At higher mileage, seal failures cause cross-contamination of fluid passages.
Fix: Full rebuild with seal kit.
6. Pump wear
Heavy-duty pump but still wears.
Fix: Pump rebuild during major service.
7. Park failure
Some 10R80s have park sprag / detent issues.
Fix: Component replacement or rebuild.
6R80 rebuild kit recommendations
Stock daily driver (F-150 5.0L, Mustang GT)
- Quality master rebuild kit (Transtec gaskets, Alto frictions)
- HD direct clutch
- Solenoid pack (mandatory at 100K+)
- TCC apply piston upgrade
- Stock-replacement HD torque converter
- Total parts cost: $1,000-1,500
- Build cost installed: $3,500-5,000
- Expected life: 100,000+ miles
Tow rig (F-150 EcoBoost towing, F-250 with 6R80)
- Master kit with Alto Power Pack frictions
- HD direct clutch + HD C clutch
- Solenoid pack
- Sonnax HD components where available
- HD torque converter (performance HD)
- Performance valve body (Sonnax-upgraded)
- Total parts cost: $1,500-2,500
- Build cost installed: $5,000-7,000
- Expected life: 80,000+ miles tow use
Performance (built Mustang GT or F-150)
- Raybestos Stage-1 frictions
- HD clutch packs with extra plates
- Performance valve body
- Race-spec torque converter
- Custom TCM tune
- Total parts cost: $2,500-4,000
- Build cost installed: $7,000-12,000
- Expected life: Depends on use
10R80 rebuild kit recommendations
Stock daily driver (F-150 5.0L, Mustang GT)
- Quality master rebuild kit
- HD direct clutch
- Solenoid pack (mandatory at 100K+)
- HD torque converter (stock-replacement)
- Total parts cost: $1,500-2,200
- Build cost installed: $4,500-6,500
- Expected life: 100,000+ miles
Tow rig (F-150 EcoBoost tow, F-250 with 10R80)
- Master kit with HD frictions
- HD clutch packs
- Solenoid pack
- HD torque converter (performance HD)
- Performance valve body work
- Total parts cost: $2,000-3,500
- Build cost installed: $6,000-9,000
- Expected life: 80,000+ miles tow use
Performance (built Mustang GT, GT500, Raptor)
- Race-spec frictions
- HD clutch packs
- Race-spec torque converter
- Performance TCM tuning
- Custom valve body
- Total parts cost: $3,500-6,000
- Build cost installed: $9,000-15,000
6R80 vs 10R80 differences
Gear count
6R80: 6 forward gears + reverse
10R80: 10 forward gears + reverse
Torque capacity
6R80: ~600 ft-lb stock
10R80: ~800 ft-lb stock
Fuel economy
10R80: 1-2 MPG better than 6R80 (lower cruise RPM with more gears)
Performance
10R80: Quicker acceleration with more gears
Reliability
6R80: Older, more parts availability
10R80: Newer, less parts availability but inherently better design
Cost to rebuild
6R80: $3,500-5,000 typically
10R80: $4,500-6,500 typically
Aftermarket support
6R80: Strong aftermarket
10R80: Growing but limited
Year-by-year 6R80 notes
2009-2010 6R80 (early)
First-year design. Some early issues addressed in later years.
2011-2013 6R80
Updated calibration. More mature design.
2014-2017 6R80
Late-model 6R80. Most refined version.
Year-by-year 10R80 notes
2017-2018 10R80
First production. Early shift quality issues addressed with software updates.
2019-2020 10R80
Updated valve body, refined shifting.
2021+ 10R80
Mature design.
Common upgrade paths
6R80 in F-150 EcoBoost (towing focused)
- Sonnax HD valve body upgrades
- Alto Power Pack frictions during rebuild
- Performance HD torque converter
- External cooler upgrade
- TCM tune (mild)
6R80 in Mustang GT (performance focused)
- Race-spec frictions
- Performance valve body
- Performance torque converter (2,400-3,000 stall)
- Custom TCM tune
- Trans brake (if competition)
10R80 in Mustang GT500 / Mach 1
- Tuning and TCM updates
- HD clutch packs during preventive rebuild
- Performance torque converter
- Race calibration
10R80 in F-150 (tow focused)
- HD clutch packs preventively
- Better cooling
- TCM tuning for tow optimization
Fluid
6R80
Mercon LV (originally) — modern Mercon LV is current spec.
Capacity: ~13 quarts total, ~5-6 quarts in pan.
Service interval: 30-50K (Ford says 60K+, real-world: more frequent for tow rigs).
10R80
Mercon LV (originally) — modern Mercon LV is current spec.
Capacity: ~12 quarts total, ~5-6 quarts in pan.
Service interval: 30-50K (similar to 6R80).
Brand recommendations
Master rebuild kits
- Alto (Red Eagle, Power Pack)
- Raybestos (Stage-1, GPZ for performance)
- Transtec (gaskets and seals)
- Precision International (mid-tier acceptable for stock daily)
HD upgrades
- Sonnax (where 6R80/10R80 kits available)
- ATI (performance for built Mustangs)
- Lentech (performance Ford specialist)
Solenoid packs
- Motorcraft / Ford (OEM equivalent)
- Borg-Warner
- ACDelco for some shared components
Torque converters
- Goerend (Ford performance specialist)
- Suncoast Converters
- Yank SS
- Performance Automatic
Cost summary
6R80 rebuild costs:
- DIY parts only: $1,000-3,000
- Independent shop: $3,500-5,500
- Performance shop: $5,500-9,000
10R80 rebuild costs:
- DIY parts only: $1,500-4,000
- Independent shop: $4,500-7,000
- Performance shop: $7,000-12,000
Reman swap:
- 6R80 quality reman: $2,800-3,800 installed
- 10R80 quality reman: $4,000-5,500 installed
What we sell
Master rebuild kits for 6R80 and 10R80 with quality frictions, OEM-spec solenoid packs, performance valve body parts, HD torque converters, and complete shift solutions.
Need 6R80 or 10R80 parts? Shop our Ford catalog. Master rebuild kits, solenoid packs, performance torque converters, valve body upgrades. Free shipping over $70. Same-day ship in-stock.
Related guides: