47RH 47RE 48RE A618 Smart-Tech High Capacity 300M Steel Input Shaft & Piston Kit
fits DODGE Cummins Diesel APPLICATIONS
INPUT SHAFT FEATURES: Heavy Duty, One Piece design eliminates weak connection between input shaft and forward (direct) clutch hub. Custom forged from ultra-high strength 300M steel 23 tooth input spline, 62 tooth clutch spline. Can be used with OE seals.
PISTON KIT FEATURES: Direct Clutch Piston with Anti-Rotation TabsSteel Clutch Plate .068" with missing lugsKit increases direct clutch capacity by 20%No change to backing plate thickness or retaining ring
DESCRIPTION: Designed for hard working Dodge A618, 47RH, 47RE and 48RE units, Sonnax heavy duty input shaft comes with durability and performance features which are second to none. Instead of the OE two piece shaft/hub design, the Sonnax shaft uses a much stronger, one piece design that combines the input shaft and forward clutch hub, eliminating the weak connection between the two. The Sonnax shaft itself is custom forged from ultra high-strength 300M steel to allow the internal grain structure of the steel to follow the general shape of the part, improving shaft strength. The Smart-Tech high capacity input shaft and piston kit has a hub with longer direct (front) clutch splines. Combining longer splines with a thinner billet aluminum direct piston allows for one extra (OE thickness) direct friction plate, while keeping the OE thickness steels, backing plate, OE waved retaining ring and OE clutch clearances.
Some common aftermarket modifications designed to include extra clutches require reduced steel thickness and decrease the heat absorption capacity of the clutch pack, others reduce clearance and eliminate the waved retaining ring, which contributes to excessive 2-3 shift overlap. This kit avoids these problems by increasing the number of frictions from 5 to 6, adding to the steel mass of the clutch pack, and maintaining the OE thickness backing plate and clearances for the optimum combination of increased capacity and durability.
We build all of our
torque converters on site. We carry Super Heavy Duty Billet Torque Converters. We will build to your
vehicles specifications.
Transmission Parts ship daily from our distribution center.
GOT QUESTIONS on your
specific Year/Make/Model?
Send us a message!