Engine Oil Filler Cap (97-08 Jeep Wrangler TJ & JK)Find parts that fit my vehicle

Secure Seal. The Engine Oil Filler Cap restores a positive, leak-resistant seal at the top of your engine, helping keep contaminants out while maintaining proper crankcase pressure. Purpose-built as a direct replacement, it meets stock specifications for dependable day-to-day reliability and consistent performance. It fits 1997-2008 Jeep Wrangler TJ and JK models, giving you the exact form and function needed to replace a worn, cracked, or missing cap without compromise.

Construction and Appearance. Finished in matte black, the cap presents a clean, OE-style look that blends into the engine bay and is easy to grip with gloved or oily hands. OE compatible and comparable materials are used to meet stock specifications, supporting proper sealing under heat cycles and vibration. The internal sealing surface and gasket interface are engineered to resist hardening and shrinkage over time, helping the cap maintain a tight seal that supports stable crankcase conditions and oil integrity for thousands of miles.

Installation. This cap installs with a simple twist-on motion and locks into place using the factory-style threads and stop positions for a confident, tactile engagement. Because it is a direct replacement, no tools or modifications are required; just remove the old cap, inspect the neck for debris, and seat the new cap until it indexes firmly. The user-friendly design makes periodic checks and top-offs quick, helping you keep maintenance on schedule while preventing mess and minimizing evaporative loss.

Application. This Engine Oil Filler Cap fits 1997-2008 Jeep Wrangler TJ and JK models. By restoring a proper seal, it helps stop engine blow-by from venting through the fill neck, reduces oil misting around the cover, and supports cleaner engine operation. The result is a tidier engine bay, more consistent oil levels between services, and confidence that your lubrication system is protected from dust, moisture, and accidental contamination during everyday driving and routine maintenance.

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