The 6L80 stator support is a wear point that kills pump pressure and takes the bushing with it. Catch it early or replace at rebuild.
What the stator support does
- Supports the stator splines (one-way clutch races)
- Carries pump fluid to the torque converter
- Houses pump bushings
- Reacts torque from 1st and reverse
Symptoms of stator support wear
Pressure drop:
- Low line pressure (especially when hot)
- Soft / late shifts
- P0868 line pressure low code
Converter shudder:
- TCC shudder at lockup
- Worsens as fluid gets hot
- Often confused with TCC clutch wear
Pump bushing failure:
- Metal in pan (brass particles = pump bushing)
- Front pump leak
- Read our transmission pan inspection
Why it wears
- Aluminum support, steel races
- Galling when fluid degrades
- Made worse by extended fluid intervals
- HP applications accelerate failure
Replacement options
OEM stator support:
- $150-$250 part
- Same wear pattern repeats
- Good for stock + light-duty
HD stator support:
- Sonnax / TransTec upgraded
- Hardened wear surfaces
- $250-$450 part
- Right call for HD truck or performance use
What you need:
- Stator support
- Pump bushing kit
- Front seal + gasket
- TCC seal kit (do it now)
Install notes
- Pull trans, drop pan, remove valve body
- Pull pump assembly
- Stator support unbolts from pump body
- Inspect pump rotor + slide for wear at same time
When to replace vs leave alone
Replace if:
- Low pressure DTC
- TCC shudder
- Visible wear at stator bore
- Rebuild over 150k miles
Leave alone if:
- Stock pressure good
- No metal in pan
- Bushing tight in stator support
Cost
DIY stator + bushing only:
- $250-$450 parts
- 8-12 hours labor (trans out)
Full pump rebuild w/ stator:
- $500-$800 parts
- Most rebuilders include in major rebuild
Need 6L80 stator support, pump parts, or rebuild kits? Shop our 6L80 catalog. HD stator supports, pump rebuild kits, complete rebuild bundles. Free shipping over $70.
Related: