Haltech Genuine Bosch Knock Sensor – 8mm (5/16 in.) Mounting Bolt | Includes Plug & 2 Pins

The Haltech Genuine Bosch Knock Sensor is a factory-quality Bosch knock sensor supplied by Haltech — the correct sensor for Haltech ECU installations requiring an 8mm (5/16 in.) mounting bolt, complete with the matching plug and 2 pins for a clean, correct wiring connection to the Haltech harness. Knock sensing is a critical engine management function — the knock sensor detects detonation events in the engine and signals the ECU to retard ignition timing before detonation causes engine damage. Running a quality, correctly specified knock sensor is not optional in any serious engine management installation — it is the primary line of defence against detonation-induced engine damage in boosted and high-compression applications. The Haltech-supplied Bosch sensor ensures correct signal output, correct sensitivity, and correct connector compatibility with the Haltech harness — eliminating the fitment and calibration uncertainty of generic aftermarket alternatives.

Key Features:

• Genuine Bosch knock sensor — factory-quality Bosch sensor supplied by Haltech — correct signal output and sensitivity for Haltech ECU knock detection systems
• 8mm (5/16 in.) mounting bolt — suits engine blocks with an 8mm knock sensor mounting boss — verify your engine's mounting boss thread size before ordering
• Includes matching plug and 2 pins — complete connector kit for a clean, correct wiring connection to the Haltech harness without sourcing separate connector components
• Haltech ECU compatible — specified and supplied by Haltech for use with their ECU product lineup — correct sensor for Haltech knock detection configuration
• Bosch quality — Bosch is the world's leading automotive sensor manufacturer — the Bosch knock sensor is the OEM sensor of choice for a wide range of production performance engines and is the benchmark for knock sensor signal quality and reliability

Why Knock Sensing Matters:

• Detonation Detection: Knock (detonation) occurs when the air-fuel mixture in the combustion chamber ignites prematurely or unevenly — generating a pressure spike that can damage pistons, rings, bearings, and cylinder head gaskets in a very short time. In boosted applications — where intake charge temperatures and cylinder pressures are elevated — detonation risk is significantly higher than in naturally aspirated engines, and the consequences of undetected detonation are more severe. The knock sensor detects the characteristic vibration frequency of detonation events and signals the ECU to retard ignition timing — reducing cylinder pressure and eliminating the detonation event before damage occurs.
• Ignition Timing Safety Margin: A correctly calibrated knock sensor and ECU knock control system allows the engine to run closer to the MBT (Maximum Brake Torque) ignition timing limit — maximizing power output — while automatically retarding timing when detonation is detected. Without knock sensing, the ignition map must be conservatively retarded to provide a safety margin against detonation under all conditions — sacrificing power. With knock sensing, the ECU can run aggressive timing and pull back only when detonation is actually detected — maximizing power while protecting the engine.
• Sensor Quality: Knock sensor signal quality is critical for correct knock detection. A low-quality or incorrectly specified sensor may produce incorrect signal levels, incorrect frequency response, or excessive noise — causing the ECU to miss genuine knock events or trigger false knock retard on normal combustion noise. The genuine Bosch sensor provides the correct signal characteristics for Haltech's knock detection algorithms — ensuring reliable, accurate knock detection.

Specifications:

• Brand: Haltech (sensor: genuine Bosch)
• Part Number: HALHT-011100
• Barcode: 9356450001311
• Sensor Type: Knock sensor (broadband / flat response type)
• Mounting Bolt: 8mm (5/16 in.)
• Includes: Knock sensor, matching plug, 2 pins
• Weight: 0.13 lbs
• Compatibility: Haltech ECU systems — verify specific ECU model compatibility with Haltech documentation

Fitment & Application:

• Suits engine blocks with an 8mm knock sensor mounting boss — verify your engine's mounting boss thread size before ordering. Common 8mm knock sensor applications include a wide range of Japanese and European performance engines — confirm your specific engine's mounting specification.
• Designed for use with Haltech ECU systems — verify compatibility with your specific Haltech ECU model and harness connector specification in Haltech's product documentation before ordering.
• Note: If your engine has a 12mm knock sensor mounting boss (common on many Nissan, Toyota, and Mitsubishi engines), a different knock sensor part number is required — verify your engine's mounting boss thread size before ordering.

What's Included:

• 1 x Genuine Bosch knock sensor — 8mm mounting (HALHT-011100)
• 1 x Matching connector plug
• 2 x Connector pins

Installation Notes:

• Mount the knock sensor to the engine block at the correct torque specification — over-tightening or under-tightening the mounting bolt affects sensor sensitivity and signal accuracy. Refer to Haltech's installation documentation for the correct torque value.
• Mount the sensor as close to the cylinders as possible, on a flat machined surface of the engine block — correct mounting location is critical for accurate knock detection. Refer to Haltech's knock sensor placement guidelines for your specific engine.
• Route the sensor wiring away from ignition leads, coil packs, and other high-voltage components to minimize electrical noise interference with the knock signal.
• Configure the Haltech ECU's knock control settings (knock threshold, retard amount, recovery rate) after installation — correct knock control calibration is required for the sensor to function correctly as a safety system. Refer to Haltech's ECU software documentation and consult an experienced Haltech tuner for knock control calibration.

Why Haltech?

Haltech is one of the world's leading aftermarket ECU manufacturers — an Australian brand with a global following in the performance and motorsport engine management community, known for their Elite series and Nexus ECU platforms and a comprehensive range of sensors, harnesses, and accessories engineered to work correctly with their ECU systems. Haltech's decision to supply a genuine Bosch knock sensor — rather than a generic alternative — reflects their commitment to correct sensor specification and signal quality in their engine management installations. For Haltech ECU users who want the correct knock sensor for their installation, the HALHT-011100 is the specified part.

Perfect For:

• Haltech ECU installations on engines with an 8mm knock sensor mounting boss requiring a knock sensor, plug, and pins in a single purchase
• Replacement of a damaged or failed knock sensor in an existing Haltech installation
• Boosted and high-compression engine builds where correct knock detection is critical for engine protection and ignition timing optimization
• Builders who want a genuine Bosch sensor — not a generic aftermarket alternative — for their Haltech ECU knock sensing system

Note: Verify your engine's knock sensor mounting boss thread size (8mm vs. 12mm) before ordering. Verify Haltech ECU model compatibility before purchasing. Correct knock control calibration by an experienced Haltech tuner is required after installation. Mount at the correct torque specification — refer to Haltech installation documentation.