Dodge trucks with listed Chrysler RFE transmissions are at high risk for overdrive failure due to clutch wear on the inner retainer housing. Damage builds up over time, causing the clutches to drag, affecting apply and release. To eliminate all risk of wear, Sonnax heavy duty remanufactured inner retainer housing kit 72554-11K features a specially modified, used OE retainer and new hardened steel inserts.

The Sonnax retainer is an ideal upgrade for improving transmission durability in any stock or modified vehicle. All OE cast aluminum retainer and aftermarket billet aluminum retainers, even those that are hardcoat anodized, will inevitably wear. Steel retainers are not an ideal option — due to their excess weight, they overstress support bushings throughout the transmission.

• Modified, remanufactured retainer and hardened steel inserts prevent retainer wear that leads to clutch overheating and failure
• Works with OE overdrive housings and Sonnax Smart-Tech^® overdrive clutch housing kit 72960-18K
• Compatible with single- and double-sided clutches