ZONFANT Jeep Wrangler JK Tailgate Check Strap Retaining Arm — 2011-2018 Direct-Fit OEM Replacement

ZONFANT's tailgate check strap retaining arm is a direct-fit replacement for the Wrangler JK rear trunk/tailgate check strap, restoring secure tailgate movement and reliable support.

If your Jeep Wrangler's tailgate doesn't hold position smoothly, binds, or shows visible wear at the check strap mounting, this ZONFANT replacement arm offers an OEM-style fix. Designed to match the fit and function of factory parts (replacement numbers #4589890AC, 4589890AB, 04589890AC), the part installs quickly and helps return consistent tailgate operation without modifying the vehicle.

How does this replacement arm restore my tailgate's function?

The retaining arm replaces the worn or damaged metal strap end that controls tailgate travel and detents. By providing a precise mating surface and correct geometry, it prevents the tailgate from overextending, flopping unexpectedly, or catching when opening or closing.

• Exact fit for specified replacement part numbers.
• Restores original pivot and stop points for predictable travel.
• Reduces play and noise caused by a fatigued or broken arm.

Will this part fit my Jeep Wrangler JK model years?

This ZONFANT retaining arm is made to be compatible with Jeep Wrangler/Wrangler JK models from 2011 through 2018, including 2018 Wrangler JK variants. Always cross-check your vehicle's part number before purchasing to ensure compatibility.

• Compatible with 2011–2018 Wrangler/Wrangler JK models.
• Replaces factory numbers: 4589890AC, 4589890AB, 04589890AC.
• Verify existing part number or consult vehicle manual prior to installation.

How difficult is installation and what tools are required?

The retaining arm is built to plug into the original mounting points for a near–plug-and-play replacement. Installation typically requires basic hand tools and minimal mechanical experience; many owners can complete the swap in a short amount of time.

• Basic socket set or wrenches needed for fasteners.
• No specialized fabrication or drilling required—original mounting points used.
• Professional installation optional for those who prefer shop service.

What materials and quality checks does this part include?

ZONFANT uses durable materials and subjects each piece to inspection before shipment to ensure it meets expected fit and longevity standards. The part is produced to provide reliable performance under typical driving conditions, helping maintain safe and consistent tailgate operation.

• Constructed from robust metal components for long service life.
• Factory inspection for dimensional accuracy and finish.
• Designed to match original part geometry for dependable operation.

Who is this for: This replacement tailgate check strap retaining arm is ideal for Jeep owners and mechanics who need a reliable, OEM-compatible repair for 2011–2018 Wrangler/Wrangler JK tailgate issues. Choose this part if your tailgate shows looseness, uneven travel, audible clunks, or if the factory arm is cracked or broken. It’s also a practical part for restoration projects, used Jeeps being readied for sale, or routine maintenance to maintain safe tailgate movement.