Mopar Fuel Filler Cap 52030387AA OEM replacement for Chrysler Dodge Jeep Ram — factory fit, sealed ventilation

Mopar 52030387AA is an OEM fuel filler cap engineered to replace the original cap for compatible Chrysler, Dodge, Jeep, and Ram vehicles.

This genuine Mopar replacement cap restores the original seal and fit at the fuel filler neck. Designed and manufactured to meet Mopar specifications for fit, form, and function, the part carries the factory part number 52030387AA so you can be confident it matches the vehicle's original equipment. Installing the correct fuel filler cap helps maintain proper tank ventilation and prevents fuel vapor leakage by using the same dimensions and materials the vehicle was built with.

Will this Mopar cap fit my vehicle?

Compatibility depends on your vehicle's year, make, model, and factory fuel-filler configuration. Because this is an OEM Mopar part, it is intended to replace the original cap fitted at the factory where part number 52030387AA was specified.

• Check your vehicle's parts manual or dealer database for part 52030387AA.
• Confirm match by VIN when possible to avoid ordering errors.
• Fits models that originally shipped with Mopar fuel-filler cap 52030387AA.

How does this cap restore fuel system performance?

The cap reinstates the original sealing surface and latch geometry, helping the vehicle's evaporative control system operate as intended. A proper seal reduces fuel vapor escape and helps the onboard diagnostics detect leaks accurately.

• OEM seal dimensions replicate factory tolerances for a secure fit.
• Materials matched to original to resist fuel exposure and weathering.
• Correct latch engagement prevents loosened or missing-cap warnings.

What should I expect during installation?

Installation is straightforward and typically requires no special tools: remove the old cap, inspect the filler throat for damage or debris, and install the replacement until it engages. If the filler neck or tether is damaged, replace those components for a complete repair.

• Hand-thread the cap until you feel the click or snug engagement.
• Inspect and clean the filler neck before fitting the new cap.
• Replace tethers or retainers if they are brittle or broken.

Why choose an OEM Mopar cap instead of a generic aftermarket one?

OEM parts are produced to the vehicle maker's standards and are designed to meet factory tolerances for fit and material compatibility. Choosing Mopar ensures the replacement cap matches the original part number and integrates with existing seals and detection systems without modification.

• Mopar part 52030387AA follows factory specifications for fit and function.
• Reduced risk of check-engine lights due to improper sealing or venting.
• Materials and dimensions chosen to resist typical automotive fuels and conditions.

Who is this for: Drivers and technicians who need a precise, factory-correct replacement fuel filler cap for Chrysler, Dodge, Jeep, or Ram vehicles that originally used part number 52030387AA. This cap is suitable for anyone restoring proper fuel-system sealing, replacing a lost or damaged cap, or ensuring compatibility during routine maintenance. If you require exact OEM fit and want to maintain factory tolerances, this Mopar fuel filler cap is the appropriate replacement.