The Sonnax heavy duty 4-5-6 clutch hub and intermediate shaft 104680-36 is an essential upgrade for any hard-working GM 6L80E transmission. This guarantees maximum protection against shaft breakage and clutch failure in any vehicle pushing stock components to the limit.

Sonnax uses a much stronger one-piece design that eliminates both the OE assembly’s weak and welded connection.

The one-piece design is custom forged from ultra high-strength 300M billet steel, and heat treated and shot peened for added durability. This combination of features guards against broken 4-5-6 hubs and the risk of rear splines shearing off.

The 4-5-6 clutch releases in first, second, and third gears, and at high RPMs. It requires constant oil flow across the spinning clutch frictions to prevent heat build-up and damaged clutches. This unique upgraded design of the Sonnax hub doubles oil flow to the clutches for significantly more protection against heat build-up and clutch failure. Other aftermarket shafts reduce the oil flow.

6L80 transmissions have a tendency to chirp or squawk on the 3-4 shift when the 4-5-6 clutch applies. Unlike aftermarket, two-piece shafts minimize the risk of noise by eliminating the OE dampener, and the heavy-duty Sonnax hub and shaft can be used with the dampener.

• Rugged one-piece design eliminates the weak connection where two-piece hub and shaft assemblies fail
• Heat-treated and shot-peened high-strength 300M steel forging for maximum durability
• Doubles oil flow to the clutch pack for greatly improved resistance to heat and longer clutch life
• Designed for use with OE dampeners to minimize risk of chirp or squawk