K&N® - Air/Fuel Ratio Monitor

K&N® - Round "In-dash" Complete Kit K&N® - Round "In-dash" Complete Kit K&N® - Rectangle "Surface-mount" Complete Kit K&N® - Done In House 602x420 K&N Authorized Dealer
Item Number: 307910
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Universal Air/Fuel Ratio Monitor by K&N®. Take the guess work out of tuning with this monitor. It uses an oxygen sensor to sample the exhaust gas so you’ll know when the mixture is rich, lean or just right.

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20% offMADE IN USA
Originally $265.33
$212.26
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K&N® - Round In-dash Complete Kit
85-2441

Round "In-dash" Complete Kit

Round "In-dash" Complete Kit by K&N®. Take the guess work out of tuning with this monitor. It uses an oxygen sensor to sample the exhaust gas so you’ll know when the mixture is rich, lean or just right.

In Stock - Usually ships within 24 to 48 hours

$212.26
K&N® - Round Monitor
85-2442

Round Monitor

Round Monitor by K&N®. Take the guess work out of tuning with this monitor. It uses an oxygen sensor to sample the exhaust gas so you’ll know when the mixture is rich, lean or just right.

In Stock - Usually ships within 24 to 48 hours

$156.01
K&N® - Rectangle Monitor
85-2439

Rectangle Monitor

Rectangle Monitor by K&N®. Take the guess work out of tuning with this monitor. It uses an oxygen sensor to sample the exhaust gas so you’ll know when the mixture is rich, lean or just right.

In Stock - Usually ships within 24 to 48 hours

$146.50
K&N® - Oxygen Sensor
85-2438

Oxygen Sensor

Oxygen Sensor by K&N®.

In Stock - Usually ships within 24 to 48 hours

$93.63
K&N® - Oxygen Sensor Bushing and Plug
85-2440

Oxygen Sensor Bushing and Plug

Oxygen Sensor Bushing and Plug by K&N®.

In Stock - Usually ships within 24 to 48 hours

$27.39
K&N® - Oxygen Sensor Plug
85-21686

Oxygen Sensor Plug

Oxygen Sensor Plug by K&N®.

In Stock - Usually ships within 24 to 48 hours

$18.38
K&N® - Oxygen Sensor Bushing
85-21688

Oxygen Sensor Bushing

Oxygen Sensor Bushing by K&N®.

In Stock - Usually ships within 24 to 48 hours

$14.04
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Product Details

Universal Air/Fuel Ratio Monitor by K&N®. Take the guess work out of tuning with this monitor. It uses an oxygen sensor to sample the exhaust gas so you’ll know when the mixture is rich, lean or just right.

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Features:

  • Shows the actual air / fuel mixture so you can make accurate adjustments
  • Easy to read display scale
  • Works on carbureted, injected, supercharged or turbocharged engines
  • Works with unleaded gasoline, alcohol, propane or nitrous oxide
  • Available in various displays

A computer controlled electronic fuel injection system uses an oxygen sensor to signal the computer the status of the air / fuel mixture. The sensor samples the oxygen level in the exhaust and sends this information to the computer. The computer then recalibrates the fuel delivery system, thousands of times per second, to maintain the proper air/fuel ratio throughout the entire rpm range.

The same technology is used in the K&N Air / Fuel Ratio Monitor. An oxygen sensor measures the amount of oxygen in the exhaust gas and illuminates a group of LED lights indicating the actual air/fuel mixture: lean, rich or just right. Using the K&N Monitor, you can adjust the mixture for peak performance, economy or drivability. It can also be used to prepare a vehicle for emissions testing or as a piece of dynamometer test equipment. An oxygen sensor can also be installed in both exhaust pipes of a V-type engine to check fuel distribution. The Monitor can then check either bank with the flip of a switch (switch not included).

The K&N Air / Fuel Ratio Monitor comes complete with everything necessary for installation including detailed instructions.

Note: The K&N Air / Fuel Ratio Monitor is not compatible with leaded gasoline, nitromethane or diesel fuel.

212.26
Brand: K&N       Part Numbers:
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K&N® is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. The first K&N filter was conceived for racing over 40 years ago and a performance enthusiast mindset continues today throughout all levels of the company. K&N is the sales and brand leader for performance filters, including an extensive line of factory replacement filters and performance air intake kits. The company actively promotes the environmental, economical and performance advantages of long-life reusable cotton gauze filters.

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