Tectran HK12 Cross Reference
Tectran HK12 is a Tectran aftermarket part number. The OneTouch Exim replacement is OTX-4CT0012, a constant torque clamp with a clamping range of 11/16 in to 1-1/4 in (17–32 mm). It fits the same hose or pipe and installs the same way, so OTX-4CT0012 can be ordered wherever Tectran HK12 is called for.

OneTouch replacement
Constant Torque Clamp 0.69 in to 1.25 in
Part No. OTX-4CT0012
- Clamping Range 11/16 in to 1-1/4 in (17–32 mm)
- Band Width 9/16 in
- Band Material 301 Stainless Steel
OTX-4CT0012 specifications (replaces Tectran HK12)
| Clamp Type | Constant Torque Clamp |
| Application | Coolant & Heater Hoses |
| Clamping Range | 11/16 in to 1-1/4 in (17–32 mm) |
| Hex Size | 5/16 in |
| Torque Rating | 70 in-lbs |
| SAE | 12 |
| Band Width | 9/16 in |
| Band Material | 301 Stainless Steel |
| Screw | 410 Stainless Steel | 5/16 in hex |
| Sold As | Each |
Where the Tectran HK12 clamp is used
Constant torque clamps have a spring washer stack that keeps the clamp tight as the hose expands when hot and shrinks when cold, so coolant and heater lines do not seep after a cold start. OTX-4CT0012 is used on coolant & heater hoses.
Other part numbers that match OTX-4CT0012
9 more OEM and aftermarket numbers cross to the same clamp. Any of them can be ordered as OTX-4CT0012.
| Name | Part Number | Type |
|---|---|---|
| Automann | 561.2412 | Aftermarket |
| Automann | 5612412 | Aftermarket |
| Breeze | CT 9412 | Aftermarket |
| Breeze | CT9412 | Aftermarket |
| Excoh | 4CT0012 | Aftermarket |
| Norma | 0362 0302 025 | Aftermarket |
| Norma | 3620302025 | Aftermarket |
| Norma | 03620302025 | Aftermarket |
| Tectran | HK12 | Aftermarket |
| Velvac | 022412 | Aftermarket |
Ordering OTX-4CT0012
Send us the Tectran HK12 number with the quantity you need and your delivery country. We reply within 24 hours with price and lead time for OTX-4CT0012.
Questions about this number
Is OTX-4CT0012 the same as Tectran HK12?
Yes. OTX-4CT0012 matches Tectran HK12: clamping range 11/16 in to 1-1/4 in (17–32 mm), band width 9/16 in. If the hose has been changed since the old clamp was fitted, measure the hose outside diameter before ordering.
What size is the Tectran HK12 clamp?
Tectran HK12 fits 11/16 in to 1-1/4 in (17–32 mm). The band is 301 Stainless Steel.