A-Premium Serpentine Belt Drive Kit for Jeep 4.0L (WJ 1999–2004, TJ 2000–2006) — belt, tensioner & pulley

If your Jeep WJ Grand Cherokee (1999–2004) or Wrangler TJ/Unlimited (2000–2006) with the 4.0L inline-six and air conditioning is showing squeal, slipping accessories, or visible wear on the drive components, this kit gives you the core parts needed to bring the front-end drive system back to reliable function. The package combines a heavy-duty serpentine belt, a preassembled tensioner, and a tensioner pulley sized for those factory layouts so replacement is straightforward during routine service or repair.

How will this kit affect engine accessory performance?

Replacing worn belt-drive components restores correct belt tension and alignment, which keeps the alternator, water pump, power steering, and A/C compressor turning as intended. The result is steadier accessory operation and fewer belt slip noises under load or at start-up.

• New belt profile matched to Jeep 4.0L accessory spacing.
• Preloaded tensioner simplifies setting correct tension.
• Durable pulley reduces misalignment and bearing wear.

What exactly comes in the A-Premium kit and why it matters?

The A-Premium kit contains the three parts commonly replaced together for front-end drive service: the serpentine belt, the tensioner assembly, and the tensioner pulley. Replacing them as a set prevents early failure from mixing new and worn components and saves time compared with sourcing parts individually.

• One serpentine belt engineered for the correct length and rib count.
• One belt tensioner calibrated for the 4.0L accessory layout.
• One tensioner pulley designed to match factory mounting and rotation.

How do I confirm fitment for my Jeep before ordering?

Fitment depends on model year, engine, and whether the vehicle has air conditioning. Use the listing’s vehicle selector at the top-left and review the specific notes provided on the product page to confirm compatibility before purchase.

• Compatible with Jeep WJ Grand Cherokee 1999–2004 4.0L (L6) with A/C.
• Compatible with Jeep Wrangler 2000–2006 4.0L (L6) with A/C.
• Check vehicle details and special notes on the listing for final confirmation.

What warranty and quality assurances does A-Premium provide?

A-Premium backs this serpentine belt drive kit with a one-year unlimited-mileage guarantee, offering protection against manufacturing defects under normal use. The company supplies vehicle-specific aftermarket components across many categories, letting you replace items with confidence when performing maintenance or repairs.

• One-year unlimited-mile warranty against defects.
• Parts are produced to meet the functional fit for specified Jeep models.
• Customer guidance for fitment and part verification included on the product page.

Who is this for: This kit is intended for owners and mechanics servicing Jeep vehicles with the 4.0L inline-six and air conditioning who need a targeted replacement for the serpentine belt system. It suits DIY enthusiasts doing scheduled maintenance, indie shops performing front-end repairs, and fleet operators seeking a convenient prepackaged solution to restore drive-belt reliability.