Mopar Performance 5281821AA Driver Side Idler Pulley for 3.6L Pentastar V6

The Mopar Performance 5281821AA is a genuine OEM smooth idler pulley designed specifically for the 3.6L V6 24V VVT Pentastar engine with ESS (Engine Stop-Start). This driver's side (LH) smooth idler pulley mounts at the bracket on 3.6L engines, maintaining proper serpentine belt tension and ensuring smooth engine operation.

Key Features:

• Genuine Mopar OEM smooth idler pulley for 2018-2024 Jeep Wrangler JL and 2020-2023 Jeep Gladiator JT with 3.6L V6 engines
• Factory-authorized specifications backed by FCA and the Mopar Parts & Accessories Limited Warranty
• Driver side (left) mounting position for proper accessory belt routing
• Installation time less than an hour with intermediate mechanical skill
• Torque specification: 18 ft-lbs for pulley bolt

Idler pulleys play a crucial role in engine performance by allowing the serpentine belt to rotate smoothly, which in turn makes all engine-driven accessories function properly. The 3.6L Pentastar engine uses 2 idler pulleys, and this genuine Mopar replacement ensures reliable performance and proper fit. Replace worn or noisy idler pulleys to prevent belt slippage and maintain optimal engine accessory operation.