KNOCK SENSOR

Original Bosch Knock Sensor KS4-P.

The KS4-P sensor is designed to detect structure-borne vibrations in spark ignition engines caused by uncontrolled combustion. Engineered for durability, it performs reliably even in extreme operating conditions.

SKU: bsc-ks4p

Availability: In stock

Availability: In stock

Request a trade quote
Available to ship with DHL Express in 1-3 days
GUARANTEED SAFE CHECKOUT
  • visa
  • mastercard
  • amex
  • paypal
  • google pay
  • apple pay
  • wire transfer

DETAILED SPEC

Knock_Sensor_KS4-P_Datasheet
Application
Application 3 to 25kHz
Operating temperature range -40  to 150°C
Storage temperature range -30 to 60° C
Max. Vibration ≤ 800 m/s2
Mechanical Data
Male thread (for cast) M8x25
Male thread (for Al) M8x30
Installation torque 20±5 Nm
Weight w/o wire 48 g
Protection IP X9K
Electrical Data
Range of frequency 3 t0 25 kHz
Sensitivity at 5 kHz 26 ± 8 mV/g
Max. sensitivity changing (life-time) -17 %
Linearity between 5 to 15 kHz (from 5 kHz value) -10 to 10 %
Linearity between 15 – to 20 kHz (linear increasing with freq) 20 to 50 %
Main resonance frequency 30 kHz
Impedance > 1 MOhm
Temperature dependence of sensitivity 0.04 mV/g°C
DisplaCapacity field 1,150 ± 200 pF
Connectors and Wires
Mating connectore 2-pole 2-Pin RB-Kp.1
(F02U.B00.966-01)
or
2-Pin Jetronic
(D261.205.288-01)
Pin 1 Sig+
Pin 2 Sig+
Installation Notes
The KS4-P can be connected to all Bosch Motorsport ECUs fea-
turing knock control
The sensor must rest directly on the brass compression sleeve
during operation.
To ensure low-resonance coupling of the sensor to the measure-
ment location, the contact surface must be clean and properly
machined to provide a secure flush mounting.
Please route the sensor wire in a way that prevents resonance vi-
bration.

QUESTIONS? ANSWERS.

FAQS

Does the uSDM-200 accept external sensors?
The uSDM-200D and DLG versions are equipped with 2x multipurpose (analog/digital/frequency) fully configurable inputs (0-16V), which allow connecting a multitude of sensors (speed, pressure, temp, etc). Additionally, we offer an options CAN Bus expander (PLEX EXPa-8) that gives xx …..

Documentation
Datasheet download
Pin-out Diagram download
Mounting Diagram pending
User Manual online access

OTHER ADD-ONS

2.8” PLEX uSDM-200

Small. Pro. Right

Learn More DATASHEET

4.3” PLEX SDM-330

Compact. Smart. Pro.

Learn More DATASHEET

7” PLEX SDM-700

All-in-One. Massive. Pro.

Learn More DATASHEET