Reference and Interchange Numbers
This water pump is marketed as a replacement for:
- Gates 43567
- Mopar 04893133AB
- Mopar 04893133AC
- Mopar 04893133AD
- Mopar 04893133AE
- Mopar 04893133AF
- 4893133AB
- 4893133AC
- 4893133AD
- 4893133AE
- 4893133AF
Mopar catalogs show 4893133AF as a current replacement that supersedes earlier versions. The official-style assembly may include the pump, pulley, coolant tube, fitting, plug, sensor, and gasket depending on the exact package.
Use the original pump number and VIN to confirm whether this aftermarket product includes every component required by your truck.
Product Features
- Designed for the Ram 6.4L HEMI HD engine
- Direct-fit mounting configuration
- Precision-balanced impeller
- Corrosion-resistant construction
- Designed for high-temperature operation
- Intended to reduce pump noise and vibration
- Engine-driven mechanical design
- Replacement for several superseded Mopar numbers
- One-year product support
- Suitable for 2500, 3500, 4500 and 5500 applications when verified
How the Ram 6.4L Water Pump Works
The engine’s accessory belt turns the water-pump pulley. That rotation drives the internal shaft and impeller, circulating coolant through the:
- Engine block
- Cylinder heads
- Heater circuit
- Thermostat
- Radiator
- Oil-cooling and emissions-related circuits, where equipped
The coolant absorbs heat from the engine and carries it to the radiator. A properly designed impeller must provide sufficient coolant flow without creating excessive vibration, cavitation, or bearing load.
Precision-Balanced Impeller
TUUMOND states that the pump uses an advanced hydraulic design and precision-balanced impeller. Proper impeller balance helps reduce:
- Bearing vibration
- Mechanical noise
- Shaft-seal wear
- Cavitation
- Uneven coolant flow
- Premature bearing failure
The pump should not be described as superior to the original Mopar component without independent comparative testing. It is more accurate to present it as an aftermarket replacement designed to reproduce the required fit and cooling performance.
Signs of a Failing Ram 6.4L HEMI Water Pump
Possible symptoms include:
- Coolant leaking from the front of the engine
- Dried coolant residue around the pump
- Grinding or rumbling noises
- Pulley wobble
- Repeated coolant loss
- Engine overheating
- Unstable coolant temperature
- Weak cabin heat
- Serpentine-belt tracking problems
- Coolant odor after towing or driving
- Steam from the engine compartment
A failing pump is not the only possible cause of overheating. A thermostat fault, restricted radiator, defective pressure cap, damaged fan assembly, leaking hose, or combustion-gas problem can create similar symptoms.
Use our guide explaining how to find a coolant leak before ordering parts. You can also compare the symptoms of a bad thermostat versus a bad water pump.
Water-Pump Leaks and Premature Failure
Premature water-pump failure can result from:
- Contaminated coolant
- Incorrect coolant chemistry
- Improper coolant concentration
- Excessive belt tension
- Misaligned pulleys
- Worn tensioner or idler bearings
- Trapped air
- Improper gasket installation
- Corroded sealing surfaces
- Repeated engine overheating
A replacement pump cannot correct a contaminated or mechanically misaligned cooling system. Diagnose the original failure before installing the new component, unless buying the same part twice is part of the maintenance plan.
Installation Considerations
The Ram 6.4L HEMI HD water-pump assembly incorporates several connections and may require substantial component removal for access. The exact procedure depends on the model year and chassis.
General replacement steps include:
- Verify the VIN and original pump number.
- Allow the engine to cool completely.
- Disconnect the negative battery cables as required.
- Drain the coolant into an approved container.
- Remove the air-intake components and obstructing brackets.
- Remove the fan and fan shroud as directed.
- Record the accessory-belt routing.
- Release belt tension and remove the belt.
- Disconnect the radiator and heater hoses.
- Disconnect the coolant tube, sensor, and fittings as required.
- Remove the original water-pump assembly.
- Clean and inspect the sealing surfaces.
- Compare every connection on the new and old pumps.
- Install a new gasket and required seals.
- Tighten fasteners to Ram specifications.
- Reinstall all transferred fittings and components.
- Refill with the specified coolant.
- Bleed trapped air using the factory procedure.
- Pressure-test the system and inspect for leakage.
Some 6.4L HD configurations use a coolant tube routed near or beneath the intake manifold. Do not force or bend the tube to avoid proper disassembly; damaged plumbing is rarely the labor-saving breakthrough it first appears to be.
Verify Package Contents
The supplied description does not clearly identify every included component. Before installation, determine whether the package includes:
- Water-pump pulley
- Main mounting gasket
- Coolant tube
- Tube fitting
- Plug
- Temperature sensor
- O-rings
- Installation hardware
The comparable Gates 43567 water pump is generally sold with a gasket and pulley, but contents from one manufacturer do not guarantee the contents of another brand’s package.
Inspect Related Components
While the system is open, inspect:
- Serpentine belt
- Belt tensioner
- Idler pulleys
- Fan clutch or cooling-fan assembly
- Thermostat
- Upper and lower radiator hoses
- Heater hoses
- Coolant tube seals
- Expansion tank and pressure cap
- Radiator
- Coolant condition
If the old pump failed internally or released debris, follow our guide on flushing a cooling system without causing damage.
Use the Correct Ram Coolant
Use coolant meeting the specification listed for the exact Ram model year and engine. Do not choose antifreeze solely by color, since dyes are not standardized across manufacturers.
Our guide to IAT, OAT and HOAT coolant types explains why coolant chemistry matters.
Never open a hot pressurized cooling system. Coolant can cause severe burns and is toxic to children and animals.
One-Year Customer Support
TUUMOND advertises one year of product support, including installation and after-sales assistance.
Before purchasing, confirm:
- Whether the warranty includes a replacement or refund
- Whether return shipping is covered
- Whether commercial use is eligible
- Whether labor costs are excluded
- Whether proof of professional installation is required
- Whether related engine damage is excluded
Most aftermarket warranties cover the defective component only.
Frequently Asked Questions
What trucks does this water pump fit?
It is advertised for 2014–2025 Ram 2500, 3500, 4500, and 5500 trucks equipped with the compatible 6.4L HEMI V8 gasoline engine.
Does it fit a Ram 2500 with the 6.7L Cummins?
No. The 6.7L Cummins diesel uses a completely different water pump and cooling-system layout.
Does it fit the 5.7L HEMI?
No. This pump is designed for the heavy-duty 6.4L HEMI application.
Is Gates 43567 the same as Mopar 4893133AE?
Gates 43567 is an aftermarket replacement associated with the Mopar 4893133 series. They are not manufactured by the same company, but they may share compatible fit, dimensions, and application coverage.
What does 4893133AF replace?
Current Mopar catalog information indicates that 4893133AF supersedes earlier 4893133AB, AC, AD, and AE revisions. Verify the complete assembly contents before using the numbers interchangeably.
Is the thermostat included?
The supplied product description does not state that a thermostat is included. Assume it is sold separately unless the package listing specifically confirms otherwise.
Is the pulley included?
The description does not conclusively confirm whether this particular TUUMOND package includes a pulley. Check the listing photographs and package contents before disassembling the truck.
Can a failing water pump cause overheating while towing?
Yes. Reduced coolant flow or coolant loss may become more noticeable under heavy load. A restricted radiator, weak fan clutch, stuck thermostat, or combustion leak can produce similar symptoms.
Final Verdict
The TUUMOND water pump is an aftermarket replacement option for properly verified 2014–2025 Ram heavy-duty trucks with the 6.4L HEMI V8. Its corrosion-resistant construction, precision-balanced impeller, broad HD-truck coverage, and one-year support make it suitable for a standard cooling-system repair.
Before ordering, confirm the VIN, original 4893133-series number, and package contents—particularly the pulley, coolant tube, fittings, sensor, and gasket.
There are no reviews yet.