Transom Trailer Support Kit for Single-Ram Outboard Motors – Replaces YiheoZux MY2148 and Quick Marine MY2148
Transom Trailer Support Kit for Single-Ram Outboard Motors – Replaces YiheoZux MY2148 and Quick Marine MY2148 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Transom Trailer Support Kit for Single-Ram Outboard Motors – Replac...
Transom Trailer Support Kit for Single-Ram Outboard Motors – Replaces YiheoZux MY2148 and Quick Marine MY2148 is backordered and will ship as soon as it is back in stock.
Product Details
This transom trailer support kit for single-ram outboard motors helps stabilize an outboard during trailering, reducing movement and stress on the boat’s transom and the engine’s trim/tilt system. It is intended for compatible single-ram outboard applications from brands including Yamaha, Suzuki, Mercury, Johnson, Evinrude, Honda, and Tohatsu. Confirm the engine’s trim/tilt configuration and the support dimensions before ordering.
This aftermarket replacement is listed as a replacement for YiheoZux MY2148 and Quick Marine MY2148.
- Supports the outboard while the boat is being transported on a trailer.
- Installs by clipping onto the hydraulic trim/tilt ram.
- Includes two hydraulic steering-cylinder locks to help limit side-to-side engine movement during transit.
Part Number Matrix
Use these aftermarket reference numbers as comparison points. Verify the shape, dimensions, and application before purchase.
| Brand | Part Number |
|---|---|
| YiheoZux | MY2148 |
| Quick Marine | MY2148 |
Engine & Model Compatibility
The applications below represent the listed compatibility range for this single-ram support kit. Model fitment can vary by year, trim system, engine configuration, and mounting geometry. Compare your engine and the product dimensions before installation.
| Brand | Model | Rated HP | Stroke | Notes |
|---|---|---|---|---|
| Yamaha | Various | 30–115 HP | 4-Stroke | Including V-MAX SHO applications from 90–115 HP |
| Mercury | Pro XS, Sea Pro | 40–150 HP | 4-Stroke | Confirm single-ram configuration |
| Mercury | Verado V8 and V6 | 250–400 HP | 4-Stroke | Confirm support and ram geometry |
| Mercury | Racing | 300R–450R | 4-Stroke | Confirm application before ordering |
| Suzuki | DF40A–DF115B | 40–115 HP | 4-Stroke | Confirm single-ram configuration |
| Honda | BF40–BF60 | 40–60 HP | 4-Stroke | Confirm trim/tilt ram dimensions |
| Tohatsu | Various | 40–60 HP | 4-Stroke | Confirm single-ram configuration |
| Johnson/Evinrude | E-TEC H.O. and Inline | 25–130 HP | Not specified | Confirm the engine’s support geometry |
Technical Specifications
- Product Type
- Transom trailer support kit with hydraulic steering-cylinder locks
- Application
- Single-ram outboard motors
- Installation
- Clips around the hydraulic trim/tilt ram
- Connection
- Adjustable rubber support for an outboard motor
- Housing Material
- High-strength flexible marine-grade rubber
- Housing Color
- Black and red
- Dimensions
- Transom support: 127 mm × 66 mm × 58 mm (5 × 2.6 × 2.3 in)
- Weight
- 0.73 kg (1.61 lb)
- Fitting Type
- Clamp-on
- Kit Contents
- One 5-inch transom support and two 4-inch hydraulic steering-cylinder locks
What’s in the Box
- 1 × Transom support, 5-inch
- 2 × Hydraulic steering-cylinder locks, 4-inch each
Installation Notes
- Raise the outboard motor to the full up position.
- Identify the main hydraulic trim/tilt ram.
- Clip the transom support securely onto the exposed ram, making sure it is centered and stable.
- Slowly lower the motor until it makes firm contact with the support. Do not apply excessive pressure.
- With the motor supported, straighten the engine and attach the two hydraulic steering-cylinder locks to the steering rams on either side.
- Before trailering, check that the support is seated correctly and that the motor does not move excessively from side to side.
Troubleshooting & FAQ
How does this device protect my boat and motor?
During trailering, road bumps can cause an outboard to bounce or pivot, placing additional stress on the boat’s transom and the engine’s trim/tilt system. This support helps stabilize the motor and limit movement while the boat is transported.
What are the included steering-cylinder locks for?
The two smaller locks attach to the hydraulic steering rams and help limit side-to-side engine movement during transit. Install them only when they are compatible with the steering arrangement on your engine.
Is this compatible with dual-ram trim systems?
No. This model is intended for outboard motors equipped with a single trim/tilt ram. Do not use it on a dual-ram system unless compatibility has been specifically confirmed.
What material is it made from?
The support is made from a high-strength, flexible marine-grade rubber compound intended to withstand the compressive forces associated with supporting an outboard during trailering.
Is this an OEM part?
No. This is an aftermarket replacement listed for comparison with YiheoZux MY2148 and Quick Marine MY2148.
How should I confirm compatibility?
Confirm that your outboard uses a single trim/tilt ram, compare the support dimensions with the available clearance around the ram, and verify that the two steering-cylinder locks can be installed without interfering with the steering system.
What shipping and warranty options are available?
Shipping availability, delivery estimates, warranty coverage, and return conditions are determined by the seller’s current policies and are shown during checkout or in the applicable policy information.
Safety & Important Information
- Verify the engine model, trim/tilt configuration, support dimensions, and steering-cylinder clearance before purchase.
- This product is for single-ram outboard applications; do not use it on an incompatible dual-ram system.
- Make sure the support is centered, fully seated, and stable before towing.
- Do not use a damaged, cracked, or deformed support.
- Professional installation is recommended when compatibility or installation condition is uncertain.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts selected for dependable performance in real-world conditions.
- Fast Global Fulfillment — Free standard delivery is available to most regions, with delivery details shown at checkout.
- Manufacturer-Direct Value — Fair pricing focused on practical materials and quality control.
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