This Speed Engineering 24" harness extension lengthens the LS1 throttle position sensor, oil pressure sensor (3-wire), and coolant sensor connections. It plugs into the factory harness and works with different GM applications.
⚠️ Important Notes:
- May be compatible with other GM Gen 3 LS series engines. Double check the plug-in connections to confirm fitment
Features:
- Extends Throttle Position, Oil Pressure and Coolant Sensor Connections
- 3-Wire Oil Pressure Sensor Connector
- 24" Length
- Factory Harness Plug-In
FAQ
Which sensors does this extension cover?
It extends the throttle position sensor, the 3-wire oil pressure sensor, and the coolant sensor connections.
How long is the extension?
The extension is 24" long.
Will it fit other LS engines besides the LS1?
It may be compatible with other GM Gen 3 LS series engines. The plug-in connections should be checked to confirm fitment.
Does it plug into the factory harness?
Yes. The extension plugs into the factory harness connectors.
Is this part street legal?
No. Speed Engineering sells this harness extension as a race-only product intended for competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).

