A-Premium Harmonic Balancer Crankshaft Pulley for Jeep 4.0L — Black 7.5" Diameter, OEM Fit

The A-Premium Engine Harmonic Balancer Crankshaft Pulley is a direct-fit replacement for Jeep 4.0L engines, built to resist corrosion and restore proper crankshaft damping.

If your Jeep Grand Cherokee, Wrangler, Cherokee, Comanche, TJ, or Wagoneer with the 4.0L inline-six is showing signs of vibration, oil seal leaks, or accessory misalignment, swapping in a reliable harmonic balancer can return smooth operation. This A-Premium unit is manufactured to automotive quality standards, sized to match OEM specifications, and carries multiple cross-reference numbers for easy verification.

How does this balancer fit my specific Jeep model?

This harmonic balancer is designed to match the bolt pattern and overall dimensions used across many Jeep 4.0L applications from the late 1980s through the mid-2000s. Confirming the cross-reference numbers or comparing dimensions ensures correct fitment before installation.

• Compatible models: Grand Cherokee (1993–2004), Wrangler (1991–1995, 1997–2006), Cherokee (1987–2001), Comanche (1987–1992), TJ (2005–2006), Wagoneer (1987–1990).
• Key specs: 7-1/2" diameter, 1-7/8" width, single mounting hole, approximately 8 lbs.
• Cross-reference numbers: 594-018, 594018, 33002920, 33002920AB, 33002920AC.

What materials and tests back its durability?

A-Premium produces this pulley under IATF 16949-influenced processes and subjects components to corrosion and material inspections. Those procedures reduce the risk of premature rust or structural failure in road conditions.

• Passed 96-hour salt spray testing for enhanced rust resistance.
• Manufactured to automotive industry material inspection standards.
• Black finish resists surface corrosion and visually matches many engine bays.

Will this restore engine vibration control and accessory alignment?

Replacing a worn or damaged harmonic balancer with a correctly sized unit helps damp crankshaft torsional vibrations and maintains proper pulley alignment for belts and accessories. It’s a practical repair to address vibration, belt misalignment, or front-engine oil seal issues tied to balancer wear.

• Correct diameter and width preserve belt path and tension geometry.
• Proper mounting hole alignment ensures secure fastening to the crankshaft.
• Weight and construction aimed to match OEM damping characteristics.

What warranty and confidence does A-Premium provide?

A-Premium supports this harmonic balancer with a one-year unlimited-mileage guarantee to cover manufacturing defects. Their broader catalog of replacement parts also helps owners source multiple components from a single supplier.

• One-year unlimited-mileage guarantee against workmanship defects.
• Backed by parts cross-references to confirm compatibility.
• Available through aftermarket channels for convenient purchase and shipping.

Who is this for: Mechanics, DIY Jeep owners, and restoration enthusiasts who need an OEM-dimension harmonic balancer for Jeep 4.0L engines will value this A-Premium crankshaft pulley. It’s aimed at people replacing a deteriorated or noisy balancer, repairing front-end oil seal leaks, or correcting belt alignment without changing engine performance characteristics. Verify vehicle year and the listed cross-reference numbers before ordering to ensure an accurate, trouble-free replacement.