The Mopar 4596198 radiator cap is a genuine OEM component designed specifically for the Jeep Wrangler JK (2007–2018). Manufactured to factory specifications, it ensures perfect fitment, optimal sealing, and reliable cooling system performance — whether you’re driving daily or pushing your Jeep hard off-road.
Key Features
- Genuine Mopar part manufactured to OEM standards.
- Designed for Jeep Wrangler JK 2-door and 4-door models from 2007 to 2018.
- Simple installation — beginner-friendly, typically under one hour.
- Includes one radiator cap.
- Standard 12-month manufacturer warranty.
Benefits
- Maintains proper pressure in the cooling system to prevent engine overheating.
- Ensures consistent sealing even under high thermal load.
- Replaces worn or damaged caps, restoring full cooling system efficiency.
- 100% compatibility — eliminates issues common with low-quality aftermarket parts.
When Should You Replace the Radiator Cap?
- If coolant leakage is visible around the cap area.
- When the cap no longer holds pressure or the seal is damaged.
- As part of preventive maintenance — especially on vehicles used off-road.
- After purchasing a used vehicle, when the condition of the cap is unknown.
Installation Overview
- Allow the engine to cool completely before removing the cap.
- Remove the old cap and clean the sealing area.
- Install the new cap and hand-tighten.
- Start the engine and check for any leaks.
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