Fuel Injector – Fits Mercury 25HP & 30HP EFI (Replaces 898101T74, 8M0091784)

Vendor: JLM Marine
Availability: In Stock
Product Type: Fuel Injector
$18.50
$18.50
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Fuel Injector – Fits Mercury 25HP & 30HP EFI (Replaces 898101T74, 8M0091784) - JLM Marine Boat Parts Limited

Fuel Injector – Fits Mercury 25HP & 30HP EFI (Replaces 898101T74, 8M0091784)

$18.50

Fuel Injector – Fits Mercury 25HP & 30HP EFI (Replaces 898101T74, 8M0091784)

$18.50
Qty: 1

Fuel Injector – Fits Mercury 25HP & 30HP EFI (Replaces 898101T74, 8M0091784)

This electronic fuel injector is designed for Mercury 25HP & 30HP EFI 4-Stroke outboards (2006–present) with serial numbers 0R106966 and up. It is a direct replacement for Mercury part numbers 898101T74 and its supersession 8M0091784, ensuring precise fit and function.

As a high-impedance component controlled by the ECM, this injector is engineered for installation in multi-port EFI systems, delivering fuel efficiently to the intake manifold for optimal engine performance.

  • Application: Fits 3-cylinder inline Mercury 25/30HP EFI engines (2006+).
  • Fuel Type Compatibility: Gasoline.
  • Installation Method: Mounts to the intake manifold within a multi-port EFI system.

Part Number Cross-Reference

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

Brand Part Number Superseded By
Mercury 898101T74 8M0091784
Aftermarket AM8M0091784

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury 25 EFI 25 4-Stroke 2006–present 8M0091784 Serial 0R106966+
Mercury 25 Jet EFI 25 4-Stroke 2006–present 8M0091784 Serial 0R165086+
Mercury 30 EFI 30 4-Stroke 2006–present 8M0091784 Serial 0R106966+

Technical Specifications

Specification Value
Product Type Electronic Fuel Injector
Installation Multi-port EFI system, intake manifold mounted
Fuel Type Gasoline
Connection Electrical connector with harness
Housing Color Black
Dimensions 2.00" L × 1.50" W × 0.75" H (50.8 × 38.1 × 19.1 mm)
Weight 0.08 lbs (36.3 g)
Package Dimensions 8 x 4.5 x 3.5 cm
Fitting Type Direct replacement OEM
Warranty Standard Mercury Marine warranty
Other Technical Attributes High impedance, pressurized sealed system, ECM controlled

Package Contents

  • 1 x Fuel Injector (Part No. 8M0091784)

Installation Guide

  1. Safety First: Before starting, disconnect the negative battery terminal and ensure the engine is cool. Relieve the fuel system pressure according to your engine’s service manual to prevent fuel spray.
  2. Access the Injector: Remove any covers or components obstructing access to the fuel rail and injectors.
  3. Disconnect: Unplug the electrical connector from the fuel injector you intend to replace.
  4. Remove Fuel Rail: Loosen and remove the mounting bolts that secure the fuel rail to the intake manifold.
  5. Extract Injector: Gently lift the fuel rail assembly. Carefully pull the old fuel injector straight out from its port on the fuel rail. You may need to gently twist it to break the seal.
  6. Prepare New Injector: Lightly lubricate the new injector's O-rings with clean engine oil. This prevents tearing and ensures a proper seal.
  7. Install New Injector: Press the new fuel injector firmly and squarely into the fuel rail port until it seats completely.
  8. Reinstall Fuel Rail: Reposition the fuel rail assembly, aligning each injector with its port in the intake manifold. Re-install and tighten the mounting bolts to the manufacturer's specified torque.
  9. Reconnect: Securely plug the electrical connector back onto the new injector.
  10. Check for Leaks: Reconnect the battery. Turn the ignition key to the “ON” position (do not start the engine) for a few seconds to pressurize the system. Carefully inspect the injector and fuel rail for any signs of fuel leaks.
  11. Final Test: If no leaks are found, start the engine and check for smooth operation.

Troubleshooting & FAQ

Q: How can I be sure this fuel injector fits my exact Mercury engine?

A: The most reliable method is to check your engine's serial number. This injector fits Mercury 25HP and 30HP EFI models starting with serial number 0R106966 (or 0R165086 for Jet models). You can find this number on a plate on the transom bracket. Compare this to the ranges listed in our "Compatible Engine Models" table.

Q: What are common symptoms of a bad fuel injector?

A: Common signs include difficulty starting, a rough or unstable idle, engine misfires (which may trigger a check engine light), reduced power and acceleration, and worsening fuel economy. A malfunctioning injector can cause the engine to run too lean or too rich.

Q: Do I need any special tools for installation?

A: Basic hand tools like a socket/ratchet set are typically sufficient. A fuel line disconnect tool may be helpful for certain models. Most importantly, have a clean workspace and refer to your engine's service manual for specific procedures and torque specifications.

Q: OEM vs. Aftermarket?

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.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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