KIM Hotstart Thermostat Rebuilding Service

Please contact us for a price quote and estimated turn-around-time. Turn-around-time may vary depending on current in-house workload. Repairs come backed with a one year warranty covering parts and our labor.

300-4296 replacement


  • Step 1 - Fill out and print our shipping label.
  • Step 2 - Ship your regulator or control board to us.
  • Step 3 - You will be contacted when your repairs have been completed and to arrange payment and return shipping.


  • Part numbers shown in bold have new Flight Systems replacements in stock for same-day shipping. Certain older OEM boards can no longer be rebuilt due to obsolete parts for which we offer new replacements and are denoted as "NEW ONLY".
  • TEST ONLY - There is a test fee of $35(slightly higher for complex ATS controls). Boards received that test as "NTF" (No Trouble Found) are charged this fee.
  • Factory Direct Prices Shown - RE-SELLERS (Gen Set, Marine & RV Dealers/Distributors/Repair Shops) call for your Discounted Pricing!
  • "P" = PLUS PARTS. Required components totaling over $5 are an extra charge and will be itemized on the invoice. Other required components and material are included in the rebuild price at no extra charge.

Repairable Part Numbers

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OEM Part # Description Factory Direct Rebuild Price
354315 120/208/240 CONTROL BOARD
New Replacement Available: $195