MARS 83905 Surge Protect 319825-402 The ASCO 198218-001-D Coil is

The ASCO 198218-001-D Coil is a high-performance replacement component engineered for precision fluid control in industrial and HVACR systems

Engineered specifically for RFT

matching all electrical and mechanical specifications of the original unit

swapping a restricted or failing valve for this OEM component restores factory-spec stability and temperature control without the need for extensive field modifications

The WHL0491 is commonly found in Trane AUC

MARS 83905 Surge Protect 319825-402 The ASCO 198218-001-D Coil isThe MARS 83905 Surge Protector is a professional grade Type 1 and Type 2 SPD specifically engineered to safeguard sensitive HVACR electronics from transient overvoltage. Utilizing advanced TPMOV (Thermally Protected Metal Oxide Varistor) technology, this device isolates fault conditions to prevent the catastrophic failures often seen with standard MOVs. Designed for 120 240V single phase systems, it offers a robust 20,000 Amp surge current capacity