ISR Performance Couplers and Clamps - T-Bolt Hose Clamp - 3.25"+8mm

The ISR Performance T-bolt hose clamp in 3.25 inch plus 8mm size is the clamp to reach for when a standard worm-gear clamp is not cutting it on an intercooler or intake connection. T-bolt clamps spread load evenly around the full circumference of a silicone coupler, which is what keeps a boosted charge pipe from popping off under pressure.

Why Run a T-Bolt Clamp

• A T-bolt design applies clamping force uniformly instead of concentrating it where a worm-gear screw sits.
• The band does not chew into silicone the way a slotted worm-gear band can over repeated tightening cycles.
• Torque holds consistently through heat cycles, so a coupler sealed on the dyno stays sealed on the street.

Sizing

This clamp is listed as 3.25 inch plus 8mm. Match the size to the outside diameter of the coupler you are clamping, not the bare pipe, since the wall thickness of a silicone coupler sits on top of the tube size. Pair it with a 3.25 inch ISR silicone coupler for the cleanest result.

Fitment

Universal. Works with any coupler-to-pipe joint that falls within the stated size, including intercooler piping, cold air intakes and throttle body connections on 240SX, 350Z, Genesis Coupe or any other build.

Install Tip

Seat the coupler fully over both pipe ends, position the clamp just inboard of the pipe bead, and snug it evenly. Re-check torque after the first few heat cycles.

All ISR Performance products are designed for off-road use only.