Package Contents
- One IRONTREE AW7163 engine water pump
- One mounting gasket
The thermostat is not listed as an included component.
Reference and Interchange Numbers
Common AW7163 interchange numbers include:
- Airtex AW7163
- Airtex 1725
- GMB 120-4350
- 1204350
- 131-2375
- 20434
- WP-9240
- 58572
- CR4350
- Mopar 53020873AB
- Mopar 53020873AC
- Mopar 53021187AA
- Mopar 53021187AC
- Mopar 53022058AA
- Mopar 53022189AA
- Mopar 53022189AB
- Mopar 53022189AC
- Mopar 53022189AG
- Mopar 68045797AA
Mopar part numbers may have been superseded during production. Match the physical pump, coolant connections, and mounting pattern before treating any interchange number as a guaranteed replacement.
Product Features
- Vehicle-specific replacement pump
- Compatible with selected 3.7L and 4.7L PowerTech engines
- Function-tested before sale
- Leakage-tested before sale
- Upgraded bearing construction
- Mechanical shaft seal
- OE-style impeller design
- Durable pump housing
- Mounting gasket included
- Three-year or 50,000-mile warranty
Upgraded Internal Components
IRONTREE identifies four principal areas of construction:
Bearings
The bearing supports the pulley, shaft, and impeller. A worn bearing can create noise, shaft movement, pulley wobble, and mechanical-seal failure.
Impeller
The impeller circulates coolant through the engine and radiator. Correct vane shape, direction, and shaft attachment are necessary for proper flow.
Mechanical Seal
The seal keeps coolant inside the pump while allowing the shaft to rotate. Seal failure commonly produces leakage from the pump’s weep hole.
Housing
The housing supports the internal components and directs coolant through the engine. Accurately machined mounting surfaces help the gasket seal correctly.
Signs of a Failing 3.7L or 4.7L Water Pump
Common symptoms include:
- Coolant leaking from the pump
- Dried coolant residue near the pulley
- Grinding, squealing, or rumbling
- Pulley wobble
- Repeated coolant loss
- Engine overheating
- Temperature fluctuations
- Weak cabin heat
- Coolant odor
- Steam from the engine compartment
A thermostat, radiator, hose, pressure cap, cooling fan, or head-gasket problem can produce similar symptoms. Follow our guide explaining how to find a coolant leak before ordering parts.
Our comparison of a bad thermostat versus a bad water pump can help distinguish the two faults.
Can the Pump Fail Without Leaking?
Yes. Internal failures can reduce coolant circulation without causing an obvious external leak. Possible causes include:
- Damaged impeller
- Loose impeller
- Worn shaft bearing
- Restricted coolant passages
— Incorrect belt operation - Severe corrosion
Poor circulation may cause overheating under load or cabin heat that changes with engine speed.
Installation Recommendations
Never remove a radiator or pressurized reservoir cap while the engine is hot.
General installation steps include:
- Confirm the engine and original pump number.
- Allow the engine to cool completely.
- Disconnect the battery when required.
- Drain the coolant into a suitable container.
- Remove the fan shroud and mechanical fan when equipped.
- Record the serpentine-belt routing.
- Loosen the pulley bolts before removing the belt when appropriate.
- Release the tensioner and remove the belt.
- Disconnect the necessary coolant hoses.
- Remove the original water pump.
- Clean the engine’s sealing surface.
- Compare the new and original pumps.
- Install the supplied gasket.
- Tighten fasteners to the factory specifications.
- Reinstall the pulley, belt, fan, hoses, and shroud.
- Refill with the correct coolant.
- Bleed trapped air using the approved procedure.
- Pressure-test and inspect for leakage.
Installation details vary between the Liberty, Dakota, Ram 1500, Grand Cherokee, and related platforms. Use service information for the exact vehicle.
Inspect the Accessory Drive
A damaged accessory drive can shorten the life of a new pump. Inspect:
- Serpentine belt
- Automatic tensioner
- Idler pulleys
- Water-pump pulley
- Fan clutch, where equipped
- Pulley alignment
- Belt routing
Do not overtighten a belt on a system using an automatic tensioner. If tension is incorrect, investigate the belt selection, routing, or tensioner.
Inspect Related Cooling Components
Also inspect:
- Thermostat and housing
- Radiator hoses
- Heater hoses
- Expansion tank
- Pressure cap
- Radiator
- Cooling fan
- Coolant condition
If the coolant is dirty or incompatible, follow our guide on flushing a cooling system safely.
Coolant Compatibility
Use coolant meeting the specification for the vehicle’s exact model year. Chrysler changed coolant formulations during this long application period, so color alone is not a reliable guide.
Our article explaining IAT, OAT and HOAT coolant types covers the differences and mixing risks.
Three-Year or 50,000-Mile Warranty
IRONTREE advertises warranty coverage for:
- Three years, or
- 50,000 miles
Coverage typically ends when either limit is reached. Confirm whether the warranty covers return shipping, labor, commercial use, or related engine damage.
Frequently Asked Questions
What vehicles does IRONTREE AW7163 fit?
It fits selected Chrysler Aspen, Dodge Dakota, Durango, Nitro and Ram 1500, Jeep Commander, Grand Cherokee and Liberty, Mitsubishi Raider, and Ram Dakota models with compatible 3.7L or 4.7L engines.
Does AW7163 fit a 5.7L HEMI?
No. The 5.7L HEMI uses a different water pump.
Does it fit a 3.6L Pentastar?
No. AW7163 is intended for compatible 3.7L PowerTech V6 and 4.7L PowerTech V8 engines.
Does it fit a 2011 Ram 1500?
It fits selected 2011 Ram 1500 models with the 3.7L V6 or 4.7L V8. It does not fit every available engine.
Does it fit the Jeep Liberty?
Yes. The stated range is 2002–2012 for Liberty models equipped with the 3.7L V6.
Is the gasket included?
Yes. One water-pump mounting gasket is included.
Is the thermostat included?
No thermostat is identified as part of this kit.
Is this a genuine Mopar pump?
No. IRONTREE AW7163 is an aftermarket replacement designed to reproduce OE-style fit and function.
Final Verdict
The IRONTREE AW7163 is a practical replacement for compatible Chrysler, Dodge, Jeep, Ram, and Mitsubishi vehicles using the 3.7L or 4.7L PowerTech engine. Its included gasket, tested construction, broad vehicle coverage, and three-year/50,000-mile warranty make it suitable for a conventional cooling-system repair.
Confirm the VIN and original pump number before purchase, particularly on transition-year Dodge and Ram trucks.
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