Prothane 1-1903-BL Black Polyurethane Complete Drivetrain Kit for Jeep Wrangler TJ

The Prothane 1-1903-BL is a complete black polyurethane drivetrain kit engineered as a direct upgrade over the factory rubber motor and transmission mounts on the Jeep Wrangler TJ. Over time, OEM rubber mounts soften and deteriorate, allowing excessive drivetrain movement that can cause driveline bind, power loss, and accelerated wear on surrounding components. This kit addresses those issues with precision-molded polyurethane components that deliver superior durability and performance.

Kit Includes:

• Polyurethane motor mounts (pair)
• Polyurethane transmission mount with metal interlock "run-safe" interlocking device
• All necessary hardware for installation

Key Features:

• Premium Black Polyurethane Construction – Significantly harder and more durable than factory rubber, resisting oil, heat, and UV degradation
• Metal Interlock Transmission Mount – Features Prothane's poly-locked run-safe design to prevent catastrophic mount failure and keep you moving even under extreme conditions
• Improved Driveline Alignment – Reduced mount flex keeps the driveline properly aligned, minimizing bind and protecting U-joints and transfer case components
• Better Power Transfer – Firmer mounts reduce energy lost to drivetrain movement, improving throttle response and acceleration feel
• Precision Machined Fit – Machined to exacting specifications for a direct, no-modification installation
• Includes Detailed Instructions – Kit ships with installation instructions for a straightforward DIY install

Prothane polyurethane drivetrain components are ideal for Jeep TJ owners who demand more from their mounts — whether on the trail or the street. The firmer polyurethane compound may transmit slightly more NVH (noise, vibration, and harshness) to the cabin compared to stock rubber, which is a normal characteristic of performance polyurethane mounts and a worthwhile trade-off for the added durability and driveline control.