4429955 MOPAR Engine Expansion Plug

Review MOPAR 4429 955 Engine Expansion Plug

The Mopar 4429955 engine expansion plug is a crucial component of your engine cooling system designed for specific applications in Chrysler, Dodge, and Plymouth vehicles. This expansion plug is engineered to meet the high-performance demands of these vehicles and is manufactured with precision and care to ensure optimal engine operation.

The Mopar 4429955 expansion plug is made of a high-temperature, heat-resistant material that can withstand the extreme conditions inside the engine. Its unique design includes a pressure relief valve that allows excess coolant to escape when the engine reaches high temperatures, preventing damage from overheating and helping maintain optimal engine performance.

This expansion plug features a durable, O-ring seal to prevent coolant leaks and ensure a secure connection between the radiator and the engine. It also includes a brass threaded body for added durability and a brass pressure relief valve for reliable operation.

The Mopar 4429955 expansion plug is specifically designed for use with Mopar coolant, which is formulated to provide superior protection against corrosion, scale, and cavitation. This coolant helps maintain the longevity and efficiency of your cooling system and engine.

Installing the Mopar 4429955 engine expansion plug is a straightforward process, and it is recommended that it be replaced every 50,000 miles or as part of a regular maintenance schedule to ensure the longevity and performance of your engine cooling system. By using a genuine Mopar expansion plug, you can have confidence in the reliability and durability of your engine cooling system and the overall performance of your vehicle.

The Mopar 4429955 4429 955 engine expansion plug is a vital component of an engine cooling system. This plug helps in the expansion of coolant during engine operation and prevents the coolant from entering the cylinders during cold starts. Here are some pros and cons of buying this engine expansion plug:

1. High-quality product: Mopar is a reputed brand and this expansion plug is engineered to meet or exceed OEM specifications.

2. Durable design: It is made of high-quality materials that ensure long-lasting performance and resistance to corrosion.

3. Easy installation: The plug is designed to be easy to install, and no special tools are required.

4. Enhances engine performance: A functioning expansion plug ensures that the engine runs at optimal temperature, which can lead to improved performance.

5. Cost-effective: Compared to the cost of engine damage caused by a faulty expansion plug, this replacement part is a cost-effective solution.

1. Expensive: The price of this expansion plug may seem high for some customers, but it is important to remember that it is a critical component that ensures the longevity of the engine.

2. Not a universal fit: This expansion plug is designed specifically for certain engines, and it may not fit all makes and models.

3. Requires periodic replacement: The expansion plug should be replaced at regular intervals to ensure that the coolant system is functioning properly.

In conclusion, the Mopar 4429955 4429 955 engine expansion plug is a high-quality and durable component that is essential for the proper functioning of an engine cooling system. While it may be an investment, it is a cost-effective solution compared to the potential damage caused by a faulty expansion plug. If your engine requires this specific expansion plug, it is recommended to replace it at the recommended interval to ensure the longevity and performance of your engine.

Details:

Part number: 4429955.

specifications engineblocksam:

• brand: Mopar
• mpn: 4429955
• part type: Engine Plug
• genuine oem: Yes
• manufacturer warranty: 1 Year
• return policy: No Returns For Parts Having Electrical Components
• fitment type: Direct Replacement
• fitment footnotes: Location-engine Block;vendor;
• weight: 0 Lb
• length: 0.154 In

shipping engineblocksam:

• class: standard
• type: fixed
• service: standard
• transit: 3-9 days

seller engineblocksam:

• rating: 96.9%
• # reviews: 30
• city: lawrenceville, georgia

payments engineblocksam:

• wallet: apple-pay
• other
• credit card: mastercard

offer engineblocksam:

• started: may 20, 2025
• prices: $15.11–$103.52
• item condition:
  • New
  • New other (see details)
• availability: in stock
• in stock #: 5
• options: ship-to-home
• sold #: 18

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

returns engineblocksam:

• policy: returns accepted
• paid by: buyer
• time: 30 days