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Tilt Trim Motor – Fits Yamaha 50-225HP Outboards (Replaces 688-43880-11, 6E5-43880-02-00)

Sale price $149.99 Regular price $239.00
Shipping calculated at checkout.

Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Tilt Trim Motor is engineered to fit a range of Yamaha 50-225HP 2-Stroke outboard engines from 1985 to 1991. It is designed for early model outboards featuring a 3-wire electrical connection and a 3-bolt mounting pattern, ensuring a precise match for compatible systems.

It serves as a direct interchange for Yamaha part numbers 688-43880-11-00, 6E5-43880-01-00, and 6E5-43880-02-00, as well as aftermarket references like Sierra 18-6259, 18-6821, and Arco 6267.

  • Features a 3-bolt mounting pattern for secure installation.
  • Connects via a 3-wire harness with ring terminal ends.
  • Select models may include a relay kit for conversion to a newer 2-wire setup.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Yamaha 688-43880-11-00
Yamaha 6E5-43880-01-00
Yamaha 6E5-43880-02-00
Yamaha 6H1-43800-00EK
Sierra 18-6259
Sierra 18-6821
Arco 6267

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This motor is designed for the following Yamaha outboard models. Please verify your specific model and year for correct fitment.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha 50ETML 50 2-Stroke 1990 688-43880-11-00
Yamaha 50TLH 50 2-Stroke 1991 688-43880-11-00
Yamaha P50TLR 50 2-Stroke 1991 688-43880-11-00
Yamaha PRO50L 50 2-Stroke 1987–1990 688-43880-11-00
Yamaha 70ETL 70 2-Stroke 1985–1986 688-43880-11-00
Yamaha 90ETL 90 2-Stroke 1985–1986 688-43880-11-00
Yamaha 90ETLJ 90 2-Stroke 1986 688-43880-11-00
Yamaha 90ETLJ-JD 90 2-Stroke 1986 688-43880-11-00
Yamaha 115ETLK 115 2-Stroke 1985 688-43880-11-00
Yamaha 115ETXK 115 2-Stroke 1985 688-43880-11-00
Yamaha 115ETLJ 115 2-Stroke 1986 688-43880-11-00
Yamaha 115ETXJ 115 2-Stroke 1986 688-43880-11-00
Yamaha 150ETLK 150 2-Stroke 1985 688-43880-11-00
Yamaha 150ETXK 150 2-Stroke 1985 688-43880-11-00
Yamaha 150ETLJ 150 2-Stroke 1986 688-43880-11-00
Yamaha 150ETXJ 150 2-Stroke 1986 688-43880-11-00
Yamaha L150ETXJ 150 2-Stroke 1986 688-43880-11-00
Yamaha PROV150J 150 2-Stroke 1986 688-43880-11-00
Yamaha PROV150LJ 150 2-Stroke 1986 688-43880-11-00
Yamaha 175ETLK 175 2-Stroke 1985 688-43880-11-00
Yamaha 175ETXK 175 2-Stroke 1985 688-43880-11-00
Yamaha 175ETLJ 175 2-Stroke 1986 688-43880-11-00
Yamaha 175ETXJ 175 2-Stroke 1986 688-43880-11-00
Yamaha 200ETLK 200 2-Stroke 1985 688-43880-11-00
Yamaha 200ETXK 200 2-Stroke 1985 688-43880-11-00
Yamaha 200ETLJ 200 2-Stroke 1986 688-43880-11-00
Yamaha 200ETXJ 200 2-Stroke 1986 688-43880-11-00
Yamaha L200ETXJ 200 2-Stroke 1986 688-43880-11-00
Yamaha V6SPECIALLK 220 2-Stroke 1985 688-43880-11-00
Yamaha V6SPECIALXK 220 2-Stroke 1985 688-43880-11-00
Yamaha V6SPECIALLJ 220 2-Stroke 1986 688-43880-11-00
Yamaha V6SPECIALLN 220 2-Stroke 1984 688-43880-11-00
Yamaha V6SPECIALXJ 220 2-Stroke 1986 688-43880-11-00
Yamaha V6SPECIALXN 220 2-Stroke 1984 688-43880-11-00

Technical Specs

Product Type
Tilt Trim Motor
Installation
3-bolt mount pattern
Connection
3-wire with ring terminal ends
Housing Material
Metal with protective coating
Voltage
12V DC
Warranty
1 Year
Product Dimensions
25.5cm L x 20.0cm W x 17.0cm H
Box Dimensions
25.5cm L x 20.0cm W x 17.0cm H

What’s in the Box

  • 1 x Tilt Trim Motor (Replaces 688-43880-11-00)
  • 1 x O-Ring Seal

Installation Notes

  1. Disconnect the battery terminals to prevent electrical shorts.
  2. Tilt the outboard to the full "up" position and engage the tilt lock for safety.
  3. Locate and disconnect the motor's 3-wire electrical harness.
  4. Carefully unbolt and remove the old tilt trim motor. Be prepared for some residual hydraulic fluid.
  5. Clean the mounting surface and install the new O-ring seal provided.
  6. Mount the new motor, ensuring the bolts are tightened evenly to the manufacturer's torque specification.
  7. Reconnect the electrical harness securely.
  8. Disengage the tilt lock, reconnect the battery, and test the full range of motion.

Troubleshooting & FAQ

What are the signs of a failing tilt trim motor?

Common symptoms include a slow or jerky trimming action, a whining or clicking sound from the motor during operation, or a complete failure to raise or lower the outboard. You may also notice fluid leaks around the motor seals.

How does this aftermarket motor compare to an OEM Yamaha part?

While OEM Yamaha units are known for very long service lives, this aftermarket motor offers a cost-effective alternative built to match original specifications. User reports on various aftermarket brands are mixed, but Arco units have received positive feedback for durability. It is crucial to ensure a clean installation and protect all electrical connections in the marine environment.

Will this fit my engine if it uses a 2-wire connection?

This motor is designed with a 3-wire connection for older Yamaha models. However, some versions include a relay kit that allows for conversion to a newer 2-wire system. Please check the "What's in the Box" section to confirm if a relay is included with this specific package.

Can I install this motor myself?

While DIY installation is possible for those with mechanical experience, professional installation is recommended. The process involves handling the weight of the outboard, ensuring proper sealing, and correctly wiring the unit. Improper installation can lead to leaks, electrical issues, or damage to the trim system.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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