What usually causes the active exhaust rattle on a Scat Pack?
Documented on the 2019 Dodge Charger Scat Pack build
Published May 23, 2026
Most commonly it's a loose or worn exhaust valve linkage bushing or a loose fastener on the actuator—rarely the actuator motor itself.
Full Answer
Most commonly it's a loose or worn exhaust valve linkage bushing or a loose fastener on the actuator—rarely the actuator motor itself. Vibrations allow metal-on-metal contact that sounds like a rattle.
Documented In This Build
Related Parts
Exhaust valve actuator (motor/assembly)
Mopar (OEM) or aftermarket equivalent$275
Exhaust valve linkage bushing / rubber grommet
$8
Lock nut / jam nut or nylock nut (hardware set)
$3
Related Tools
Torque wrench
Floor jack
Jack stands
Ratchet and extensions
Penetrating oil (e.g., PB Blaster)
Screwdriver / pry tool
Gloves / protective eyewear
Socket set (metric: common 10mm/13mm/15mm)
Threadlocker (medium strength)
