Block-sealed Terminal Systems (BTS)

Delphi Connection Systems
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Delphi's 1.5 and 2.8 mm Block-sealed Terminal Systems (BTS) are complete, high-performance connection systems including terminal, seal, and connector. BTS brings to the market a creative layered-seal concept for connectors, utilizing two independent sealing layers in a patented process that offers advantages over traditional single-piece block-sealed tool technology. This innovative layered-seal technology allows the connector to engage/disengage up to four times and still retain sealing performance.The BTS tangless terminal is an innovative clean body, two-piece design (base part with steel sleeve). It provides higher electrical performance including higher levels of temperature- and vibration-resistance. The terminal allows a broader range of cable sizes over competitive offerings.


  • Two-piece terminal design (base part with steel sleeve) allows an optimized design for electrical and mechanical requirements
  • Dual locks provide greater integrity with more robust electrical performance
  • Clean body design is possible for layered- and block-sealed system
  • Layered- and block-sealed design configurations allow small centerline spacing and help improve packaging capability
  • Single wire seal versions for BTS 280 enable mixed block seal and single wire seal and help improve packaging capability
  • Layered-seal design offers two independent sealing layers for low insertion force and high sealing class performance
  • Superior performance in demanding application environments due to excellent temperature and vibration resistance
  • Broad range of cable sizes for enhanced application flexibility
  • High strength copper alloy base material helps improve connectivity, performance, and robustness


  • Sensor device connections Common rail
  • In-line connections
  • Window lifts
  • Fuel tanks
  • Control units