805226A1 Throttle Position Sensor for MerCruiser Volvo Penta | JLM Marine

Throttle Position Sensor for MerCruiser & Volvo Penta 5.0L 5.7L 7.4L 8.2L V8 GM Drive – OEM# 805226A1

This throttle position sensor is engineered for MerCruiser and Volvo Penta sterndrive and inboard engines, including 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L V8 GM drive systems. It ensures accurate throttle monitoring for fuel-injected engines, delivering reliable engine response and performance.

This sensor directly replaces Mercury MerCruiser 805226A1 / R020040, Volvo Penta 3857487 / 3855184, Sierra 18-7630, and Mallory 9-33701, providing a dependable aftermarket solution for most Volvo Penta fuel-injected engines from 1993 to 2013.

• Fits MerCruiser 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L sterndrive and inboard engines
• Compatible with most Volvo Penta fuel-injected engines (1993–2013)
• Includes 1 throttle position sensor, ready to install

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

Your order includes:

• 1 × Throttle Position Sensor

Installation Guide

1. Disconnect the negative battery cable to ensure electrical safety during installation.
2. Locate the throttle body assembly on your MerCruiser or Volvo Penta engine.
3. Disconnect the electrical connector from the old throttle position sensor.
4. Remove the mounting screws securing the sensor to the throttle body. Keep screws for reuse if in good condition.
5. Carefully remove the old sensor from the throttle shaft.
6. Align the new throttle position sensor with the throttle shaft, ensuring proper orientation.
7. Secure the new sensor with the mounting screws, tightening firmly but not over-torquing.
8. Reconnect the electrical connector to the new sensor until it clicks into place.
9. Reconnect the negative battery cable.
10. Start the engine and allow it to idle; verify smooth throttle response and no warning lights.
11. If applicable, use a diagnostic tool to clear any stored fault codes and confirm proper sensor operation.

Troubleshooting & FAQ

Q: How do I know if my throttle position sensor needs replacement?
A: Common symptoms include rough idling, poor acceleration, stalling, hesitation during throttle input, or a check engine light with TPS-related error codes. If your engine exhibits these issues, testing or replacing the sensor may resolve the problem.

Q: Will this sensor fit my specific MerCruiser or Volvo Penta engine?
A: This sensor fits MerCruiser 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L sterndrive/inboard engines, and most Volvo Penta fuel-injected engines from 1993–2013. Cross-check your original part number (805226A1, 3857487, 3855184, etc.) to confirm fitment.

Q: How often should I replace the throttle position sensor?
A: TPS units typically last many years under normal conditions. Replace only when faulty or during major throttle body service. Regular inspection during annual maintenance can help catch early wear.

Q: What's the difference between this aftermarket sensor and the OEM version?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.