What is the main benefit of the HBX-1 Heat-Sink Bung Extender?

The primary benefit is to reduce the operating temperature of your wide-band O2 sensor. This helps maintain accurate readings and can significantly extend the sensor's lifespan, especially in high-heat applications.

How far does the HBX-1 extend the O2 sensor from the exhaust stream?

The HBX-1 pulls the O2 sensor approximately 1.1875 inches (30mm) out of its original weld boss location.

Will this extender affect the accuracy of my O2 sensor readings?

No, the design is specifically engineered to reduce sensor temperature while still allowing for the critical flow of exhaust gases to the sensing element, ensuring accurate readings.

Innovate Motorsports Heat-Sink Bung Extender 37290

Name: Innovate HBX-1 (Heat-Sink Bung Extender)
Brand: Innovate Motorsports
SKU: innovate-motorsports-innovate-hbx-1-heat-sink-bung-extender-t14-520743
Price: 89.64 USD
Availability: BackOrder

Innovate HBX-1 (Heat-Sink Bung Extender)

$89.64

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Innovate HBX-1 (Heat-Sink Bung Extender). Reduces sensor temperature for accurate readings.

Key Features

The HBX-1 Heat-Sink Bung Extender pulls the O2 sensor 1.1875" (30mm) out of the original weld boss.
This design reduces the applied temperature to the sensor.
It maintains critical flow of exhaust gases to the sensing element for accurate readings.
The bung extender is precision machined from specialty materials.
It is designed to address applications generating excessive heat in the O2 sensor.

⚠️ 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

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Product Details

The Innovate HBX-1 Heat-Sink Bung Extender is precision machined to help keep your Bosch LSU 4.2 or 4.9 wide-band O2 sensor operating within its ideal temperature range. These sensors are rated for exhaust gas temperatures below 1,700°F and sensor housing temperatures below 1,058°F. When these limits are exceeded, accuracy suffers and the sensor's lifespan can be significantly reduced. Innovate Motorsports products will display an error message, like the '08- Sensor Timing Error,' rather than provide bad data.

For certain turbo vehicles, rotary engines, or other setups that run exceptionally hot, encountering these temperature issues can be frequent. The HBX-1 addresses this by using a specialized heat-sink design. It effectively pulls the O2 sensor about 1.1875 inches (30mm) away from the direct exhaust stream, which helps reduce the temperature applied to the sensor. Crucially, it's designed to maintain the proper flow of exhaust gases to the sensing element, ensuring you still get accurate readings without the excessive heat.