Buy Crankshaft Rear Main Seal, 2.4 (4621939AB)

The Crankshaft Rear Main Seal, 2.4 (Part Numberh/ 4621939AB) is an important engine

component used in several Chrysler, Dodge, Jeep, and Plymouth vehicles equipped with 2.4-liter engines.

This seal is designed to prevent engine oil from leaking where the crankshaft exits the engine block and

connects to the transmission. Maintaininghproper seal at this location is essential for engine efficiency, lubrication, and overall vehicle performance.

The rear main seal is installed at the rear of the crankshaft, between the engine and the transmission bell

housing. Its primary function is to keep engine oil inside the crankcase while allowing the crankshaft to

rotate freely at high speeds. If this seal fails or becomes worn, engine oil can leak from the back of the

engine, potentially causing oil loss, contamination of the clutch or transmission components, and possible

engine damage if not repaired promptly.

Part 4621939AB is an original equipment manufacturer (OEM) style replacement commonly associated

with Mopar parts. It is manufactured to match factory specifications for fit, durability, and performance. The seal is typically constructed from a combination of durable rubber sealing material and a metal outer structure that provides stability and ensures a tight fit inside the engine block. These materials allow the seal to withstand heat, pressure, and constant rotational motion from the crankshaft.

This rear main seal is compatible with a wide

This rear main seal is compatible with a wide range of vehicles produced from the late 1990s through around 2010. Common applications include models such as the Chrysler PT Cruiser, Chrysler Sebring, Dodge Neon, Dodge Stratus, and certain Chrysler and Dodge minivans with 2.4-liter engines. It may also be used in some Jeep models such as the Jeep Wrangler and Jeep Liberty equipped with similar engine configurations.

Typical package dimensions for the part are approximately 4.25 inches by 4.25 inches with a very slim profile, and the seal is normally sold individually since only one is required per engine. It is designed as a direct replacement for the original seal, allowing mechanics to install it using existing hardware and standard engine service procedures.

Replacing a rear main seal is usually a labor-intensive repair because the transmission often needs to be removed to access the back of the engine. However, installing a high-quality replacement such as part number 4621939AB ensures proper sealing and long-term reliability.

In summary, the Crankshaft Rear Main Seal (4621939AB) plays a vital role in maintaining engine oil containment and protecting engine components. Proper installation and maintenance of this seal help prevent oil leaks, extend engine life, and maintain optimal vehicle performance.