A/C System Switch for 2000-2001 Peterbilt 387 & More - Four Seasons 35898

Help keep your truck's air conditioning working as designed with the Four Seasons switch 35898. This system-mounted binary pressure switch monitors refrigerant pressure and is designed to cut power to the compressor clutch when system pressure falls too low or climbs too high. It fits many heavy trucks, among them the 1989-1999 Kenworth T400, 1988-1992 Peterbilt 376 and 1988-1990 Kenworth C540, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.

• Corrosion resistance: Zinc coated to help resist corrosion.
• Vehicle-specific: Built for specific vehicle applications.
• Sealing components: Contains the gaskets, O-rings or seals needed to properly replace the product.
• Easy to identify: Color coded for quick identification.

Four Seasons engineers and tests its products for dependable operation. The brand backs them with more than 50 years of mobile A/C experience.

Signs this part may need replacing include an A/C compressor that won't engage, a compressor that cycles on and off rapidly, or warm air from the vents. Low refrigerant or wiring faults can cause the same signs, so diagnose the system before replacing anything. If a failed binary switch is the cause, this switch replaces it.