1998 Peterbilt 378 Heater Cores
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- Spectra Premium® - HVAC Heater CorePeterbilt 378 With Signet A/C System 1998, HVAC Heater Core by Spectra Premium®. Location: Main Unit. Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium condensers meets or exceeds the...Same quality as OE for less moneyDirect replacement$133.64