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Throttle Position Sensor 805226A1 – Fits MerCruiser MCM/MIE EFI
- $97.77
- $97.77
- Unit price
- per
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How to Match This Part
This aftermarket throttle position sensor (TPS) replaces Mercury MerCruiser / Quicksilver 805226A1. It mounts on the throttle body and reports throttle-shaft angle to the ECM so fuel delivery and spark timing stay coordinated on EFI sterndrive and inboard engines.
Match this part in this order:
1. OEM number on the removed sensor — 805226A1 (also commonly cross-matched to Sierra 18-7630)
2. Engine family — MerCruiser MCM / MIE GM V-6 and V-8 EFI (305, 350, 454, and 502 CID)
3. Physical form — black molded housing, two-hole mounting flange, and a three-terminal electrical connector
Compare the flange holes, rotor/drive 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 — other MerCruiser TPS numbers (for example later Mag / Black Scorpion sensors) are separate listings.
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 | 805226A1 | Primary reference (SENSOR KIT-TPS) |
| OEM | Volvo Penta / OMC Stern Drive | 3855184 | Interchange OEM number for the same TPS family |
| OEM | Crusader | 47032 | Interchange OEM number |
| OEM | PleasureCraft | R020040 | Interchange OEM number |
| Aftermarket | Sierra Marine | 18-7630 | Direct cross-reference |
| Aftermarket | Mallory Marine | 9-33701 | Direct cross-reference |
| Aftermarket | CDI Electronics | E13-0007 | Direct cross-reference |
This is an aftermarket part manufactured by JLM Marine. It is not sold as a genuine Mercury, MerCruiser, Quicksilver, Volvo Penta, OMC, Crusader, or PleasureCraft component.
Compatible Engine Models
Confirm your MerCruiser model before ordering. Serial location guide: Mercury Parts Diagrams. Always match the OEM number and physical form of the sensor you remove.
| Brand | Engine Model | Displacement / Notes | Application |
|---|---|---|---|
| MerCruiser | MCM / MIE GM V-6 EFI | GM V-6 EFI | Replaces 805226A1 |
| MerCruiser | MCM / MIE 305 EFI | 305 CID V-8 EFI | Replaces 805226A1 |
| MerCruiser | MCM / MIE 350 EFI | 350 CID V-8 EFI | Replaces 805226A1 |
| MerCruiser | MCM / MIE 454 EFI | 454 CID V-8 EFI | Replaces 805226A1 |
| MerCruiser | MCM / MIE 502 EFI | 502 CID V-8 EFI | Replaces 805226A1 |
Confirm the number stamped on your removed sensor and compare the connector and flange with the product images before purchase.
Technical Specifications
| Specification | Value |
|---|---|
| Part type | Throttle Position Sensor (TPS) |
| Primary OEM replaced | Mercury MerCruiser / Quicksilver 805226A1 |
| Mounting | Bolt-on throttle-body mount with two-hole flange |
| Connector | Three-terminal electrical connector (plug-in to the existing engine harness) |
| Housing form | Black molded body with keyed throttle-shaft coupling |
| Engine systems | MerCruiser MCM / MIE GM V-6 & V-8 EFI (305 / 350 / 454 / 502 CID) |
Installation Guide
- 1 Disconnect the battery negative cable and let the engine cool. Remove the flame arrestor if it blocks access to the throttle body.
- 2 Release the locking tab and unplug the three-terminal harness from the old sensor. Note how the connector is routed so the new lead is not strained against the throttle linkage.
- 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, shaft coupling, and connector position must match.
- 4 Align the new sensor coupling with 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 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 idle reset, follow that procedure with a digital multimeter or the manufacturer diagnostic tool.
- 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
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.
- This listing is for MerCruiser MCM / MIE GM V-6 & V-8 EFI applications that use 805226A1 — not for unrelated Mercury outboard TPS numbers.
- 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 805226A1 for the MCM / MIE EFI 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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