Prothane 4-1903-BL Polyurethane Motor Transmission Mount Kit - Black

The Prothane 4-1903-BL is a polyurethane motor and transmission mount kit engineered specifically for Chrysler, Dodge, and Plymouth vehicles. Replacing worn factory rubber mounts with Prothane's high-performance polyurethane delivers a firmer, more controlled engine-to-chassis connection that improves throttle response and keeps the drivetrain properly aligned under hard acceleration.

Unlike rubber, polyurethane holds its shape under the stress of a high-revving engine and resists breakdown from oil, chemicals, and road contaminants that degrade OEM mounts over time. The result is a mount that performs like a solid metal racing unit but without the excessive noise and harshness associated with all-metal alternatives.

Key Features:

• Manufactured from high-durometer polyurethane for long-lasting durability
• Application-specific engineering — not a universal fit — ensures precise installation and maximum performance
• Poly-locked "run-safe" design retains the powertrain securely even under extreme driving conditions
• Limits engine and transmission travel to reduce the risk of component breakage
• Resistant to oil, fuel, and road chemicals that deteriorate rubber mounts
• Available in black (BL suffix) — identical hardness/durometer to the red version; color is a matter of preference
• Sold as a complete kit
• Made in the USA
• Backed by Prothane's Lifetime Warranty against defects in materials and workmanship

The Prothane 4-1903-BL motor and transmission mount bushing kit is the ideal upgrade for performance street builds and track-driven Mopar applications where drivetrain stability and power transfer are a priority.