Sonnax

6L80 6L90 2-6/3-5-R Hub Rear Bushing (Pack of 5) - Sonnax

6L80, 6L90 Bushing KitPart No. 104030A-01K OE bushings in GM 6L80 and 6L90 transmissions have a tendency to wear out prematurely due to sub-optimal material composition. This wear can lead to bushing...

6L80 6L90 4-5-6 Clutch Backing Plate

GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to flexing and bowing of the backing plate (coning), especially when clutch apply pressures exceed OE...

6L80 6L90 4-5-6 Clutch Steel Plates (for use with PowerGlide Style 45 Tooth Frictions (104120-03)) (.078") (Used with 104680-45 & 104690-45) by Sonnax

6L80 6L90 4-5-6 Clutch Steel Plates (for use with PowerGlide Style 45 Tooth Frictions (104120-03)) (.078") (Used with 104680-45 & 104690-45) by Sonnax Part No. 104120-01 Wide, for use with...

6L80 6L90 4-5-6 Clutch Steel Plates (for use with PowerGlide Style 45 Tooth Frictions (104120-03)) (.090") (Used with 104680-45 & 104690-45) by Sonnax

6L80 6L90 4-5-6 Clutch Steel Plates (for use with PowerGlide Style 45 Tooth Frictions (104120-03)) (.090") (Used with 104680-45 & 104690-45) by Sonnax Part No. 104120-02 Wide, for use with...

6L80 6L90 6L45 6L50 6T45 Compensator Feed Regulator Valve Kit

Listed GM transmissions incorporate a low-pressure compensator feed circuit to assist clutch return springs during release of rotating clutches. After clutches disengage, the compensator feed circuit...

6L80 6L90 6L45 6L50 Center Support Seal Kit

The rubber seals between the center support in the case and the machined surface of the valve body are prone to leakage over time. In GM 6L45, 6L50, 6L80, 6L90 units, this can result in continuous...

6L80 6L90 6L45 6L50 HD Pump Vane

Quality replacement Sonnax pump vanes 76742 available for rebuilding GM 6L45, 6L50, 6L80 and 6L90 pump rotors. Cost-effective alternative to replacing entire pump rotor...

6L80 6L90 6L45 6L50 HD TCC Regulator Valve Spring (Pack of 5)

CONTAINS SET OF 5 SPRINGS Vehicles with GM 6L45, 6L50, 6L80 and 6L90 transmissions may have complaints of vibration, shudder or roughness, particularly while driving at low speeds with a steady...

6L80 6L90 6L45 6L50 Line Pressure Booster Kit

Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving...

6L80 6L90 6L45 6L50 O-Ringed End Plug Kit

Contains 6 Plugs & 9 O-rings The primary design function of the OE end plugs is to prevent critical pressure loss by capping the bore; it also performs a secondary function as a spring stop or...

6L80 6L90 6L45 6L50 Ovresized Converter Feed Limit Valve

Requires Tooling: F-104520-TL11C VB-06 VB-FIX GM 6L45, 6L50, 6L80, 6L90 units may have TCC apply and release problems. Bore wear or a stuck converter feed limit valve can result in converter...

6L80 6L90 6L45 6L50 Pressure Regulator Valve Kit (Changing to 104520-15K)

104520-15K is superceding 104520-14K.  104520-14K will no longer be manufactured and once stock is out there will be no more.     GM 6L45, 6L50, 6L80 and 6L90 units may exhibit...

6L80 6L90 6L45 6L50 Pump Boost Valve Kit

Vehicles with 6L45 6L50 6L80 6L90 transmissions may exhibit insufficient line rise in drive ranges, soft shifts and/or burnt clutches. These problems may be caused by continuous oscillation of the...

6L80 6L90 6L50 6L45 Oversized Pressure Regulator & Boost Valve Kit by Sonnax

6L80 6L90 6L50 6L45 Oversized Pressure Regulator & Boost Valve Kit by Sonnax Part No. 104520-16K Tooling Required: VB-06 VB-FIX F-104520-TL7C GM 6L45, 6L50, 6L80 and 6L90 units may exhibit...

6L80 6L90 Bushing Kit - Sonnax

6L80, 6L90 Bushing KitPart No. 104030A-01K OE bushings in GM 6L80 and 6L90 transmissions have a tendency to wear out prematurely due to sub-optimal material composition. This wear can lead to bushing...

6L80 6L90 CBR 1/4-5-6 Clutch Regulator Valve by Sonnax

6L80 6L90 CBR 1/4-5-6 Clutch Regulator Valve by Sonnax Part No. 104740-50   In GM 6L80 and 6L90 transmissions, the CBR1/4-5-6 clutch regulator valve moves based on a combination of solenoid...

6L80 6L90 HD Pump Slide Spring

Sonnax high-performance pump slide spring 104534-HD for GM 6L80 and 6L90 transmissions helps maintain consistent pump volume during line rise and at high-RPM operation. In high-performance...

6L80 6L90 High Capacity 4-5-6 Clutch Apply Piston Kit

Use with OE 36-tooth clutches and OE steels. GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to OE design shortcomings. Not enough clutches and insufficient...

6L80 6L90 High Capacity 4-5-6 Clutch Apply Piston Kit by Sonnax (Use with Powerglide Style Hub)

6L80 6L90 High Capacity 4-5-6 Clutch Apply Piston Kit by Sonnax (Use with Powerglide Style Hub) Part No. 104960-20K Use with Powerglide-style, 45-tooth frictions, Sonnax steels & 45-tooth...

6L80 6L90 Lube Dam For Output Planetary (2006-UP)

The output planetary assembly in GM 6L80 and 6L90 transmissions has a lube dam, or cover, that directs lube oil flow to the planetary lube feed passages. Over time, the lube dam allows gunk and...