Overview

Sonnax Smart-Tech Overdrive Clutch Housing Kits

Sonnax offers a variety of automatic transmission rebuild components, including Smart-Tech overdrive clutch housing kits. Dodge trucks pulling heavy loads or with boosted power are at high risk for overdrive burnup due to the stock transmission's insufficient clutch capacity and fragile OE clutches. Even small amounts of heat and extra torque will push the thin (.034 in.), single-sided clutches over the edge, distorting the clutch pack. The fact is, any distortion of the clutch pack takes the clearance out of spec and makes overdrive clutch burnup inevitable.

This Sonnax kit will keep hardworking trucks on the road! The unique billet aluminum housing increases overdrive apply area by 16 percent and holds a physically taller clutch pack. The 2X thicker steels increase clutch pack steel mass by 28 percent for maximum heat dissipation; and the double-sided BorgWarner clutch frictions are optimized for the 68RFE OD application and are custom-made for the Sonnax kit. This guarantees an unrivaled combination of squawk resistance and maximum clutch capacity for any truck.

This groundbreaking kit is the only top-of-the-line upgrade that eliminates clutch problems without relying on valve body/pump modifications or adding the expense of extra components.

Details at a glance:

* Modified housing holds physically taller clutch pack for 20 percent more clutch capacity
* 16 percent more OD apply area for firmer, more controlled shifts
* 2X thicker steels and double-sided clutches increase steel mass by 28 percent for maximum heat dissipation
* Custom BorgWarner clutches for maximum capacity with state-of-the-art squawk resistance
* Bolt-on anchor plate eliminates clutch pack flexing and distortion that contribute to heat build-up
* Combine with Sonnax line pressure booster kit RFE-LB1 for even higher levels of performance
* Contents:
-- Overdrive/reverse housing
-- Lip seal
-- Adapter sleeve
-- UD/OD reaction plate
-- Steel clutch plates (5)
-- Friction clutch plates (6) [custom BorgWarner]
-- Anchor late shims (2)
-- Bolt-on anchor plate
-- Screws (18)

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