Legend Brands 100899 Copper Heater Core Assembly for Prochem Apex, Everest and Peak Truckmounts
OEM copper heat exchanger and low-pressure preheater core assembly for select Prochem truckmounted carpet cleaning machines. Cross-references Windsor and Kärcher part numbers 790505, 86029780, 8.602-978.0 and 63-269.
Important Fitment Notice
Truckmount parts can vary by machine model, production date, serial number and previous equipment modifications. Please compare all part numbers, hose connections, mounting points and dimensions with the part being replaced before ordering. Do not order solely by machine name or appearance.
Product Description
The Legend Brands 100899 is a replacement copper heater core, heat exchanger and preheater assembly used in the water-heating system of select Prochem Apex, Everest and Peak truckmount extractors.
The assembly transfers available engine or system heat into the incoming cleaning solution before the water reaches the machine’s high-pressure heating stage. Replacing a leaking, restricted or damaged heater core can help restore proper water flow and heat-transfer performance.
Display Image Notice: The product image shown has been AI-enhanced and may have been reconstructed from manufacturer literature or low-resolution reference photos. It is provided for illustration only. The actual product supplied is determined solely by the manufacturer part number ordered and may vary in appearance without affecting fit or function.
Common Applications
- Select Prochem Apex truckmount carpet cleaning machines
- Select Prochem Everest truckmounts
- Select Prochem Everest 408 and Everest 650 configurations
- Select Prochem Peak truckmounts
- Machines originally equipped with one of the matching part numbers listed below
Fitment is not guaranteed for every version of the machines listed. Confirm compatibility using the machine serial number and the original heater-core part number.
Cross-Reference Part Numbers
| Legend Brands |
100899 |
| Prochem |
790505 |
| Windsor / Kärcher |
86029780 |
| Kärcher Formatted Number |
8.602-978.0 |
| Legacy Number |
Sapphire 63-269 |
| Additional References |
02033883EA, 40142016, PC-790505-EA |
| Reference Number |
4039784265394 |
Part numbers may be printed with or without spaces, periods or hyphens. Examples include 86029780, 8.602-978.0 and 8 602-978 0.
Product Features
- Complete copper heater-core assembly
- Functions as a heat exchanger or solution preheater
- Designed for select Prochem truckmount heating systems
- Direct replacement when matched by the correct OEM part number
- Reported with a 5/8-inch hose-barb connection on applicable configurations
- Replacement component for professional truckmounted carpet-cleaning equipment
What Is Included?
- One Legend Brands 100899 copper heater-core assembly
Only the parts specifically shown and described are included. Hoses, clamps, insulation, mounting hardware, gaskets, covers and additional fittings are not included unless supplied by the manufacturer as part of the packaged assembly.
Before Ordering, Please Verify:
- The original part number
- Your truckmount model and serial number
- Hose-barb size and orientation
- Overall core dimensions
- Mounting-bracket location
- Whether your machine requires a copper or stainless-steel core
Copper Versus Stainless-Steel Heater Cores
This listing is for the copper version. Some Prochem truckmounts or updated configurations may use a different copper assembly or a stainless-steel heater core. These parts are not automatically interchangeable. Match the OEM part number and physical configuration before purchase.
Symptoms of a Damaged Heater Core
- Water or cleaning solution leaking from the heater-core area
- Reduced solution flow caused by internal mineral buildup or restriction
- Lower-than-normal operating temperature
- Visible corrosion, cracking or freeze damage
- Pressure loss within the solution-heating system
These symptoms may also be caused by hoses, fittings, valves, thermostats, bypass systems or other components. Troubleshoot the machine before replacing the heater core.
Installation and Safety
Installation should be completed by a qualified truckmount service technician. Allow the machine to cool completely and relieve all solution-system pressure before beginning service. Disconnect the battery and follow the truckmount manufacturer’s service procedures.
After installation, inspect all connections and pressure-test the system for leaks before returning the machine to service. Never work on a hot or pressurized heater system.
Special-Order Repair Part — All Sales Final
Please confirm the complete part number and machine compatibility before ordering. Installed, used, special-order or incorrectly ordered repair parts are not returnable. Display images are for general reference; the order is fulfilled according to the part number purchased.
Frequently Asked Questions
Is this the heater core for every Prochem Everest?
No. Prochem produced multiple Everest versions and configurations. Confirm the serial number, original part number and connection layout before ordering.
Is this a complete truckmount heat exchanger?
This is the copper heater-core or preheater assembly identified by part number 100899. It is not the complete truckmount heating system.
Does it fit the Prochem Apex and Peak?
It is commonly cross-referenced for select Apex and Peak machines, but compatibility must be verified by serial number and original part number.
Is this the same as Kärcher 8.602-978.0?
Yes. Legend Brands 100899 is cross-referenced with Kärcher/Windsor 8.602-978.0 and 86029780.
Can I replace a stainless-steel heater core with this copper core?
Do not assume the two versions are interchangeable. Compare the OEM part number, dimensions, connections and mounting arrangement.
Can freeze damage cause this part to leak?
Yes. Water trapped inside the heater core can expand when frozen and split or deform the copper tubing. Properly winterize truckmount equipment before exposure to freezing temperatures.
Manufacturer specifications, machine applications and part numbers are subject to change without notice. Product images may show an earlier production version or components not included with the purchase. Always order repair parts by the confirmed OEM part number.
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