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Vehicle Info NeededINNOVATE MOTORSPORTSPART NUMBER: 540-3729
Heat-Sink Bung Extender
$10392
Ships on 09/08/2026
Lowest Price GuaranteeAccessories
- Heat-Sink Bung Extender
The Bosch LSU4.2 wide-band O2 sensor is rated to operate at an exhaust gas temperature of < 1300 degrees (F), and a sensor housing temperature of < 900 degrees (measured at the bung) for maximum accuracy and control. When either of these operating temperature ranges is exceeded, the sensor can no longer be accurately controlled. Further, operating at or over these temperatures for any length of time can significantly reduce the lifetime of the sensor. The LM-1 is designed to display an error message under these conditions (currently 08- Sensor Timing Error) rather than provide inaccurate readings. For some turbo vehicles, rotary engines, and other setups, this error message can be encountered with annoying frequency.
Part TypeOxygen Sensor Bung
BrandINNOVATE MOTORSPORTS
Package Height1.5
Package Width3.6
Package Length3.9
Weight0.21 PG
Part CategoryPerformance Parts
Part FitmentUniversal
Vendor Part Number37290
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
