Gates® PowerGrip SB Clamp

Thermoplastic Clamp Offers Maintenance-Free Hose Connection


The PowerGrip Hose Clamps

Don't trust your engine to just any hose clamps. Get a grip and get the revolutionary Gates® PowerGrip Hose Clamps.

Gates® thermoplastic clamp maintains a dynamic tension so that it never needs retightening. Whenever the engine reaches operating temperature, the shrink forces of PowerGrip SB readjust to a consistent clamping force.

Cold leaks, which normally occur when the temperature drops below 40 degrees F, are eliminated.

Installation using a heat gun is fast and easy, including hard-to-reach places.

The PowerGrip SB hose clamp features a smooth surface that won't rust, corrode, or result in cut fingers during installation. Those clamps are completely resistant to all automotive fluids including oil, antifreeze and even brake fluid.

Sizes are available for 1/4 through 3-1/8 inch I.D. hose.


Maintenance-Free Hose Connection
Gates SB PowerGrip Clamp Installation 1
Gates SB PowerGrip Clamp Installation 2
Gates SB PowerGrip Clamp Installation 3
  1. Be sure vehicle engine is turned off and has cooled down.
  2. Drain coolant.
  3. Remove old hoses.
  4. Clean metal stems with wire brush.
  5. Remove clamp from brace by squeezing, then folding the brace in half and removing it.
  6. Place clamps over each end of new hose.
  7. Position hose over fitting.
  8. Slide clamp over top of fitting bead. Be sure to position so the print on clamp is facing up and in full view.
  9. Apply heat as follows:
    • Use standard heat gun with settings on high.
    • Do not use open flame to apply heat.
    • Do not apply heat to one spot too long. Move gun continuously.
    • Continue until shrinking is complete.
  10. Check connections to be sure a good seal was made by trying to turn the hose.
  11. Replace coolant.
  12. Start engine and check for leaks. If leaks appear, apply more heat to clamp.

Maintenance-Free Hose Connection
Gates SB PowerGrip Clamp Application 1
Gates SB PowerGrip Clamp Application 2

Stop cold water leaks with a unique device that replaces conventional hose clamps in vehicle cooling system applications. The PowerGrip SB clamp is made from heat shrinkable thermoplastic material that provides a dynamic seal. No need for maintenance. This clamp never needs re-tightening and it is resistant to all automotive fluids.


  • Easy to Install with Ordinary Heat Gun
  • Conform to Any Shape of Hose and Housing
  • Unique Indicator Tells you When Clamp Has Shrunk
  • Features a Smooth Surface That Won't Rust or Corrode
  • Wider Sealing Area Entraps Connector Bead
  • Made From a Heat-Sensitive Thermoplastic
  • Completely Resistant to All Automotive Fluids
  • It Will Never Need Retightening
  • Operating Temperature Range: -40°F to 302°F (-40°C to 150°C)

PART NUMBER NOMINAL HOSE I.D. FITS HOSE O.D.
SBN0.25BK 1/4" 1/2" to 11/16"
SBN0.38BK 3/8" 11/16" to 13/16"
SBN0.50BK 1/2" 13/16" to 15/16"
SBN0.63BK 5/8" 15/16" to 1 1/16"
SBN0.75BK 3/4" 1 1/16" to 1 3/16"
SBN0.87BK 7/8" 1 3/16" to 1 5/16"
SBN1.00BK 1" 1 3/16" to 1 1/2"
SBN1.25BK 1 1/4" 1 1/2" to 1 3/4"
SBN1.50BK 1 1/2" 1 3/4" to 2"
SBN1.75BK 1 3/4" 2" to 2 1/4"
SBN2.00BK 2" 2 1/4" to 2 1/2"
SBN2.25BK 2 1/4" 2 1/2" to 2 3/4"
SBN2.75BK 2 3/4" 3" to 3 1/4"
SBN3.00BK 3" 3 1/4" to 3 1/2"
SBN3.13BK 3 1/8" 3 1/2" to 3 5/8"

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