Throttle Position Sensor 803148 – Fits MerCruiser 350 Mag & Black Scorpion

Throttle Position Sensor 803148 – Fits MerCruiser 350 Mag & Black Scorpion

Vendor: JLM Marine
Availability: In Stock
Product Type: Sensor
$55.77
$55.77
Subtotal: $55.77

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Throttle Position Sensor 803148 – Fits MerCruiser 350 Mag & Black Scorpion

Throttle Position Sensor 803148 – Fits MerCruiser 350 Mag & Black Scorpion

$55.77
Описание

How to Match This Part

This aftermarket throttle position sensor (TPS) replaces Mercury MerCruiser / Quicksilver 803148 (later catalogued as 8M0230659). It bolts to the throttle body and reports throttle-shaft angle to the ECM so fuel delivery and spark timing stay in sync. This listing is a brand-new sensor, not a remanufactured or rebuilt unit.

Match this part in this order:
1. OEM number on the removed sensor — 803148 or 8M0230659
2. Engine model and serial number — MerCruiser MCM / MIE 350 Mag and Black Scorpion Ski from serial 0L005900 and up (serial plate on the engine block or flame-arrestor cover)
3. Physical form — black two-hole mounting flange, light grey rotor face, and a single sealed side connector

Compare the mounting ears, rotor slot, and connector shape with the product images before ordering. If your original sensor carries a different OEM number or a different connector layout, do not use this part.

Part Number Cross-Reference

Use these verified numbers to confirm you have the correct throttle position sensor. Brand names and OEM numbers are for identification only.

Type Brand Part Number Notes
OEM Mercury MerCruiser / Quicksilver 803148 Primary reference (SENSOR-TPS)
OEM Mercury MerCruiser / Quicksilver 8M0230659 Later catalog / supersession of 803148
OEM Volvo Penta / OMC Stern Drive 3855296 Interchange OEM number for the same TPS family
Aftermarket Sierra Marine 18-7757 Direct cross-reference
Aftermarket Mallory Marine 9-33700 Direct cross-reference
Aftermarket CDI Electronics E13-0008 Direct cross-reference
Aftermarket ARCO TP001 Direct cross-reference

This is an aftermarket part manufactured by JLM Marine. It is not sold as a genuine Mercury, MerCruiser, Quicksilver, Volvo Penta, or OMC component.

Compatible Engine Models

Confirm your MerCruiser model and serial before ordering. Serial location guide: Mercury Parts Diagrams. Always match the OEM number and physical form of the sensor you remove.

Brand Engine Model Serial Number Range Notes
MerCruiser MCM / MIE 350 Mag 0L005900 & Up Replaces 803148 / 8M0230659
MerCruiser Black Scorpion Ski 0L005900 & Up Replaces 803148 / 8M0230659

Technical Specifications

Specification Value
Part type Throttle Position Sensor (TPS)
Primary OEM replaced Mercury MerCruiser / Quicksilver 803148 (also 8M0230659)
Mounting Bolt-on throttle-body mount with two-hole flange
Connector Single sealed side connector (plug-in to the existing engine harness)
Housing form Black molded body with light grey rotor face over the throttle-shaft coupling
Condition Brand new — not remanufactured

Installation Guide

  1. 1 Disconnect the battery negative cable and let the engine cool. Remove the flame arrestor if it blocks access to the throttle body.
  2. 2 Release the locking tab and unplug the harness from the old sensor. Note how the connector is routed so the new lead is not strained against the throttle linkage.
  3. 3 Remove the two mounting screws and lift the sensor off the throttle shaft. Compare the old and new units side by side: flange holes, rotor slot, and connector position must match.
  4. 4 Align the new sensor rotor with the flat of the throttle shaft, seat it fully against the throttle body, then fit the screws and tighten evenly to the torque in your MerCruiser service manual. Reuse the original screws unless they are corroded or damaged.
  5. 5 Reconnect the harness until the lock clicks, refit the flame arrestor, and reconnect the battery. If your service manual specifies a TPS voltage check or reset, follow that procedure with a digital multimeter or the manufacturer diagnostic tool.
  6. 6 Start the engine, let it idle, and open and close the throttle slowly while checking for smooth response and no stored fault codes.

Note: Professional installation is recommended for EFI throttle-body sensors.

Troubleshooting & FAQ

How do I confirm this fits my MerCruiser? +

Read the number on your existing sensor first. If it is 803148 or 8M0230659, this is the correct replacement. Then confirm MCM / MIE 350 Mag or Black Scorpion Ski with serial 0L005900 and up, and compare the flange and connector with the product images.

Is this sensor new or remanufactured? +

Every unit for this listing is brand new. We do not supply rebuilt, refurbished, or remanufactured sensors here.

What symptoms point to a failing throttle position sensor? +

Common signs include rough or hunting idle, hesitation when the throttle opens, poor throttle response, and engine fault codes related to throttle position. Confirm the fault by testing before replacing the sensor — wiring and connector problems can produce the same symptoms.

Is this an OEM or aftermarket part? +

This is an aftermarket replacement manufactured by JLM Marine. It is not a genuine Mercury, MerCruiser, or Quicksilver part. OEM and aftermarket numbers are listed only for cross-matching.

Important Notes

  • Match the OEM number and the physical form of your original sensor before ordering. A different connector or flange means a different part.
  • Serial number 0L005900 and up applies to the MerCruiser applications listed above. Confirm your plate before purchase.
  • This is an aftermarket part. Brand names and part numbers are for reference only.
  • Professional installation is recommended for EFI throttle-body sensors.

Why Choose JLM MARINE?

  • Precision Fit: Cross-referenced to Mercury MerCruiser / Quicksilver 803148 and 8M0230659 for the MerCruiser applications listed above.
  • Quality Control: Each batch is inspected for dimensional consistency and workmanship.
  • Direct from Manufacturer: Aftermarket marine sensors engineered for reliable throttle-position feedback on MerCruiser EFI systems.
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О компании JLM Marine

Основанная в 2002 году, компания JLM Marine зарекомендовала себя как специализированный производитель высококачественных морских деталей, базирующийся в Китае. Наша приверженность совершенству в производстве заслужила нам доверие ведущих мировых морских брендов.

Как прямой поставщик, мы обходим посредников, что позволяет нам предлагать конкурентоспособные цены без ущерба качеству. Такой подход не только поддерживает экономическую эффективность, но и гарантирует, что наши клиенты получают наилучшую ценность напрямую от источника.

Мы рады расширить свое присутствие через розничные каналы, предлагая наш опыт и приверженность качеству непосредственно владельцам и любителям лодок по всему миру.

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