Buy Water Pump, KJ 2.4L (4694307AB)

The water pump with part number 4694307AB is a mechanical engine coolant water

pump designed primarily for vehicles equipped withh a 2.4 L PowerTech inline‑4 engine

— most notably the Jeep Liberty (KJ) from model years 2002 through 2005 and also the Jeep Wrangler (TJ) with the same engine configuration.

In any internal combustion engine, hmanaging heat is critical. As the engine runs,

combustion and friction generate significant thermal energy. The cooling system keeps

temperatures in check by circulating antifreeze‑based coolant through passages in the engine

block, cylinder head, heater core, and radiator. The water pump’s job is to force that

coolant flow — drawing it from the radiator and pushing it through the engine so heat can

be absorbed and then shed at the radiator. If the pump fails or weakens, coolant flow drops

and the engine can overheat rapidly, risking head gasket failure or warping of critical engine parts.

Mechanically driven off the timing belt

Mechanically driven off the timing belt or accessory belt drive, the 4694307AB water

pump features an impeller that spins to create the necessary pressure differential for coolant

movement. Many versions include a seal and gasket to ensure a leak‑free installation into the

engine block’s cooling passages. The pump body is typically aluminum or similar

corrosion‑resistant metal, engineered to withstand continuous heat cycling and vibration.

For the Jeep KJ Liberty 2.4 L, this pump fits as a direct replacement and matches the

original factory specifications, ensuring correct coolant flow and system compatibility.

Common symptoms of a failing water pump include coolant leakage (often visible around

the pump housing or weep hole), engine overheating, and sometimes reduced heater

performance since coolant flow to the heater core is also affected

When installing a new pump, it’s standard practice to drain the cooling system, remove

belts and any obstructing components, install the new pump with its gasket or seal, and then

refill and properly bleed the coolant system. Because the pump works under pressure and

heat, ensuring proper installation and torque on all fasteners is essential for long‑term reliability.

In summary, the 4694307AB water pump plays a critical role in maintaining engine

temperature and overall cooling system health on 2.4 L Jeep Liberty (KJ) applications.

Replacing it at signs of wear or leakage helps prevent more severe engine damage.