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We began making the Ford 302 heater cores when a customer asked us to build a better copper heater core. It seems he had paid the dealership twice to replace the heater core in his 1993 Thunderbird. It was not the part costs but the $1,100 in labor and the knowledge that he may have to replace it a third time due to electrolysis.* The original design angled the hoses out resulting in potential seam strain so we corrected the design flaw at his request.
Allow 2-3 weeks for delivery.
*The electrical devices in the car create stray electric DC current that runs through the cooling system.
Electrolysis occurs when electrical current routs itself through the vehicle coolant in search for an electric ground. Evidence of electrolysis includes unexplained or reoccurring pinhole leaks in a heater core or radiator. Pinholes can form anywhere along the tubes, tank walls or thin spots in the material.
Aluminum radiators and heater cores leak not only from electrolysis but also degradation of the corrosive inhibiters in the coolant or improper ratios of coolant to distilled water. This may be the result of chlorides, sulfate and general hardness contained in common tap water.
A one gallon jug of coolant contains about 250 ppm silicates. In theory, in a 50/50 mix the vehicle’s overall silicate level should start out at 125 ppm minimum. The silicate will begin a plating action on the radiator’s aluminum surfaces. Unfortunately surface conditions of the aluminum will dictate the degree of plating that actually occurs. Consequently something less than 125 ppm silicate level could end up in the final solution in a fairly short period. For this reason most mechanics and recommend a flush & fill at 24 Months/30,000 miles. Failure to do so results in a premature failure of the aluminum radiator and expense of removal and replacement; a costly expense.
Other Part Number: 1AHCC00026
Manufacturer Part Number: OEM Nr. F3SZ 18476 A, E9SZ-18476-A
Interchange Part Number: F3SZ 18476 A, E9SZ-18476-A,676-00396, 676-00439, Yaxing No. FD-08021, VISTEON 6224, STANT OLD PN 90266, STANT NEW PN 339, PROLIANCE 398007, MURRAY 279362, MODINE 4R702512, FORD E9SZ18476A, FEDCO 2-560, 4 SEASONS 93479
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