Specifications
- Brand
- Innovate Motorsports
- Part #
- 3729
- UPC
- 856428037292

Innovate HBX-1 (Heat-Sink Bung Extender)
$89.64
Innovate HBX-1 Heat-Sink Bung Extender. Extends O2 sensor 1.1875" from exhaust stream to reduce heat and improve accuracy.
Key Features
- Extends O2 sensor 1.1875" (30mm) out of the original weld boss.
- Specialized heat-sink design reduces applied temperature to the sensor.
- Maintains critical flow of exhaust gases to the sensing element for accurate readings.
- Helps prevent '08- Sensor Timing Error' codes caused by excessive heat.
- Precision machined construction.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
If you're running a high-performance turbo setup, a rotary engine, or any specialty application that generates a lot of heat, you might be seeing an "08- Sensor Timing Error" from your wideband O2 sensor. This usually means the sensor is getting too hot to read accurately, which can also shorten its life. The Innovate HBX-1 Heat-Sink Bung Extender is designed to help with that exact problem.
This part is precision machined to pull your Bosch LSU 4.2 or 4.9 O2 sensor about 1.1875 inches (30mm) away from the hottest part of the exhaust stream. It's not just about moving it further away, though. The specialized heat-sink design also helps dissipate heat while still ensuring the correct flow of exhaust gases to the sensor element. This means you get more accurate readings and help protect your sensor from premature failure, even in extreme conditions.
Specifications
- Brand
- Innovate Motorsports
- Manufacturer Part #
- 3729
- UPC
- 856428037292
Frequently Asked Questions
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Innovate HBX-1 (Heat-Sink Bung Extender)




