LT4 Smooth Supercharger Idler Pulley - Malibu Boats OEM

Restore smooth, quiet belt operation and reliable boost accessory drive performance with this LT4 smooth supercharger idler pulley from Malibu Boats (OEM). Designed as a smooth-surface idler for LT4-equipped Malibu applications, this pulley helps maintain proper belt routing and tension, reducing the risk of belt squeal, slip, or premature wear. Ideal for replacements during routine maintenance, belt service, or when diagnosing noise or vibration in the front-drive system.

• Part type: Smooth idler pulley (supercharger/serpentine belt drive)
• Engine compatibility: LT4 applications (Malibu Boats)
• Surface: Smooth outer roller for backside belt contact
• Construction: Durable black pulley with integrated metal hub/bearing
• Mounting: Stud/bolt-style mounting as shown (direct-fit OEM style)
• Brand/Vendor: Malibu Boats OEM

Fitment note: LT4 accessory drives can vary by model year and configuration. Match this pulley to your existing smooth idler location and verify fitment by engine/serial or your Malibu parts reference before ordering.

Common questions
Is this a grooved pulley? No—this is a smooth idler pulley intended for the backside of the belt.
When should I replace an idler pulley? Replace if you notice bearing noise, wobble, belt dust, or uneven belt tracking.