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Fuel System Parts - Fuel Injection

Air Charge Temp Sensor Mercruiser 805223T
Your Price:
$28.99

Air Charge Temp Sensor Mercruiser 805223T

123-9-42406

AIR Charge Temp Sensor
Replaces: Mercruiser 805223T, Volvo 3854527
Fits: Mercruiser / Volvo 4.3L, 5.0L

The Air Charge Temperature Sensor (ACTS) a thermistor sensor that inputs the temperature of the incoming air stream in the air filter or intake manifold to the computer. It can be located in the intake manifold (EFI systems) or the air cleaner.


Air Charge Temp Sensor Volvo 3854158
Your Price:
$29.99

Air Charge Temp Sensor Volvo 3854158

123-9-42404

AIR Charge Temp Sensor
Replaces: OMC / Volvo 3854158
Fits: Ford 5.0L & 5.8L 1993

The Air Charge Temperature Sensor (ACTS) a thermistor sensor that inputs the temperature of the incoming air stream in the air filter or intake manifold to the computer. It can be located in the intake manifold (EFI systems) or the air cleaner.


Coolant Temp Sensor Mercruiser 805218T
Your Price:
$19.99

Coolant Temp Sensor Mercruiser 805218T

123-9-42402

Coolant Temp Sensor
Replaces: Mercruiser 805218T / Volvo 3850397
Fits: Used with Temp Gauge MCM/MIE EFI Models
  
The coolant temperature sensor is used to measure the temperature of the engine coolant of an internal combustion engine. The readings from this sensor are then fed back to the Engine control unit (ECU). This data from the sensor is then used to adjust the fuel injection and ignition timing.


Coolant Temp Sensor Volvo 3854159
Your Price:
$44.99

Coolant Temp Sensor Volvo 3854159

123-9-42403

Coolant Temp Sensor
Replaces: OMC / Volvo 3854159
Fits: Ford 5.0L & 5.8L 1993

The coolant temperature sensor is used to measure the temperature of the engine coolant of an internal combustion engine. The readings from this sensor are then fed back to the Engine control unit (ECU). This data from the sensor is then used to adjust the fuel injection and ignition timing.


IAC Motor Mercruiser 805224A1
Your Price:
$64.99

IAC Motor Mercruiser 805224A1

123-9-33401

IAC Motor
Replaces: Mercuiser 805224A1
Fits: MCM / MIE GM V6 & 305,350,454,502 EFI

An IAC (idle air control) motor is designed to adjust the engine idle RPM speed by opening and closing an air bypass passage inside the throttle body. The PCM (powertrain control module) receives information from various sensors and will output signals to adjust the idle air control motor in or out to adjust engine idle speed by controlling engine idle air.


IAC Motor OMC 3855194
Your Price:
$119.99

IAC Motor OMC 3855194

123-9-33402

IAC Motor
Replaces: Volvo / OMC 3855194
Fits: Volvo / OMC 4.3L,5.0L,5.7L,7..4L & 8.1L

An IAC (idle air control) motor is designed to adjust the engine idle RPM speed by opening and closing an air bypass passage inside the throttle body. The PCM (powertrain control module) receives information from various sensors and will output signals to adjust the idle air control motor in or out to adjust engine idle speed by controlling engine idle air.


Knock Sensor
Your Price:
$72.99

Knock Sensor

676-18-7677

Additional Details:

  • Fits: MCM/MIE GM V-8 (305, 350 & 377 CID) Engines

Interchanges/Replaces

Mallory

  • 9-33503

Mercruiser Stern Drive

  • 806612T

OMC Stern Drive

  • 3850357

Pleasurecraft

  • R020027

Volvo Penta

  • 22024631
  • 3850357

Knock Sensor
Your Price:
$141.99

Knock Sensor

676-18-7679

Interchanges/Replaces

Mallory

  • 9-33504

OMC Stern Drive

  • 3854905

Volvo Penta

  • 3854905

Knock Sensor Mercruiser 805544T
Your Price:
$39.99

Knock Sensor Mercruiser 805544T

123-9-33500

Knock Sensor
Replaces: Mercruiser 805544T / Volvo 3854512
Fits: MCM/MIE GM V8 454, 502, 540, 572

These Mallory Marine ignition knock sensors maximize your engine's performance--regardless of fuel quality! The knock sensors hear various knock frequencies under many operating conditions to detect shifts and provide an accurate signal to your engine control module. The sensors meet or exceed OE requirements and reduce potential damage to your internal engine components


MAP Sensor Mercruiser 854445
Your Price:
$56.99

MAP Sensor Mercruiser 854445

123-9-33603

MAP Sensor
Replaces: Mercruiser 854445
Fits: MCM 525 EFI

Malfunctioning MAP sensors can often cause problems, such as an intermittent check engine light, hesitation when accelerating, elevated emissions, and even poor engine performance. So, if yours is in need of replacement, do it with Mallory Marine MAP sensors. These MAP sensors provide precise measurements of manifold absolute pressure. They are designed to perform in harsh environments, such as extreme temperatures, vibration, thermal and mechanical shock, and chemical contamination. Safeguard your engine with these quality MAP sensor components.


MAP Sensor Mercruiser 864856A1
Your Price:
$89.99

MAP Sensor Mercruiser 864856A1

123-9-33601

MAP Sensor
Replaces: Mercruiser 864856A1 / Volvo 3850396
Fits: MCM/MIE GM V6 & 350,377,454,502 EFI

Malfunctioning MAP sensors can often cause problems, such as an intermittent check engine light, hesitation when accelerating, elevated emissions, and even poor engine performance. So, if yours is in need of replacement, do it with Mallory Marine MAP sensors. These MAP sensors provide precise measurements of manifold absolute pressure. They are designed to perform in harsh environments, such as extreme temperatures, vibration, thermal and mechanical shock, and chemical contamination. Safeguard your engine with these quality MAP sensor components.


MAP Sensor Mercruiser 881731
Your Price:
$56.99

MAP Sensor Mercruiser 881731

123-9-33604

MAP Sensor
Replaces: Mercruiser 881731
Fits: MCM 496 Mag & 8.1L

Malfunctioning MAP sensors can often cause problems, such as an intermittent check engine light, hesitation when accelerating, elevated emissions, and even poor engine performance. So, if yours is in need of replacement, do it with Mallory Marine MAP sensors. These MAP sensors provide precise measurements of manifold absolute pressure. They are designed to perform in harsh environments, such as extreme temperatures, vibration, thermal and mechanical shock, and chemical contamination. Safeguard your engine with these quality MAP sensor components.


O2 Spacer, Stock Mercury Riser
Your Price:
$84.99

O2 Spacer, Stock Mercury Riser

620-32430

O2 Spacer, Stock Mercury Riser

This Unique 1" thick adapter plate provides an installation option for retro fitting a Oxygen sensor and or air fuel ratio gauge for tuning purposes Into Mercruisers most common Wet Joint style exhaust manifold systems. The part is CNC machined from 6061 Billet Aluminum then Naval Spec Hard Coat anodized for corrosion resistance (Beware of inferior non-coated versions)

A unique feature of this adapter is the cooling parts that run along each side of the sensor maintaining consistent temperature of the spacer. Designed to accept all popular 18MM O2 Oxygen sensors.

  • Mercury 3 and 4" Riser Gasket(700-32080) 2 Required
  • Stainless Steel 18MM Oxygen Sensor Plug(620-50031) 1 Required

TECH NOTE: Will O2 Sensors Work In marine exhaust systems?

YES FOR TUNING but they have limitations as water / moisture is a byproduct of combustion. Often boaters find there is moisture in their exhaust system that have collected or made their way inside of what is better known as the "DRY" exhaust stream of their exhaust system. Anything from steam like to little water droplets about 1/32" all around the inside of the exhaust. This is because water IS a by product of combustion. same thing you see on a cold morning behind cars. sometimes you see water dripping out.

Don't take our word for it ask a real rocket scientist: https://www.grc.nasa.gov/www/k-12/airplane/combst1.html

This is why O2 Sensors are great for tuning but have a limited long term life span unless protected by Catalytic converters like on New Marine engine offerings. So you know gas is known as a hydrocarbon based fuel. And we all know what hydro means WATER.


PCV Valve
Your Price:
$16.99

PCV Valve

676-18-33800

Additional Details:

  • Fits: MCM 262 Mag EFI & 4.3L EFI

Interchanges/Replaces

Fram

  • FV191

Mallory

  • 9-33800

Mercruiser Stern Drive

  • 21-806118

OMC Stern Drive

  • 3856884

Volvo Penta

  • 3856884

Sensor, O2
Your Price:
$109.99

Sensor, O2

676-18-32150

Key Features:

  • Fits: GM New Generation LS Series Small Block
  • Indmar / Pleasurecraft / Mastercraft

Interchanges/Replaces

Mallory

  • 9-32150

Sensor, O2
Your Price:
$100.99

Sensor, O2

676-18-32151

Key Features:

  • Fits: GM New Generation LS Series Small Block
  • Indmar / Malibu / Ilmor

Interchanges/Replaces

Mallory

  • 9-32151

Stainless Steel 18MM Oxygen Sensor Plug
Your Price:
$23.95

Stainless Steel 18MM Oxygen Sensor Plug

620-50031

Stainless Steel 18MM Oxygen Sensor Plug

This plug only is designed fit popular O2 bungs and ports designed to allow you to cap/plug a oxygen sensor bung  Price does not include bung only plug. Sold Each. 18mm x 1.5

Note: This is a plug only

Temp Sensor
Your Price:
$20.99

Temp Sensor

676-18-7513

Key Features:

  • Sender Code "D"

Additional Details:

  • Thread Size: 1/8-27
  • Range: 239°

Interchanges/Replaces

Mallory

  • 9-33850

Volvo Penta

  • 3862500

Temperature Sender
Your Price:
$63.99

Temperature Sender

676-18-7647

Interchanges/Replaces

Mallory

  • 9-42407

Volvo Penta

  • 872066

Throttle Position Sensor Mercruiser 803148
Your Price:
$64.99

Throttle Position Sensor Mercruiser 803148

123-9-33700

Throttle Position Sensor
Replaces: Mercruiser 803148 / Volvo 3855296
Fits: MCM / MIE 350 Mag, Blk Scorpion Ski (0L005900 & up)

A throttle position sensor (TPS) is a sensor used to monitor the position of the throttle in an internal combustion engine. The sensor is usually located on the butterfly spindle so that it can directly monitor the position of the throttle.