M66 Heavy Duty Steering Cable 17ft 5.15m Fast Connect MMS206-17
mms206-17
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M66 Heavy Duty Steering Cable – 17ft
Fast-connect rotary mechanical steering cable
A 17 ft (5.15 m) M66-type mechanical steering cable for compatible fast-connect rotary helms and suitable engine connection hardware. Correct selection requires both the helm interface and installed cable length to match.
Key Features
- 17 ft / 5.15 m nominal cable length
- M66 fast-connect helm interface
- Stainless-steel engine output end
- For compatible rotary mechanical steering systems
- Suitable as a cross-reference for selected SSC62/SSC63 and Morse 290 cables only after code and length checks
Technical Specs
| Cable family | M66 fast connect |
| Nominal length | 17 ft (5.15 m) |
| System type | Rotary mechanical steering |
| Engine end | Standard steering-tube / connection-kit arrangement, application dependent |
| Cable quantity | One; dual-cable helms require two matched cables |
| 4Boats SKU | mms206-17 |
Compatibility / Fitment Guide
Confirmed M66 helm families: Ultraflex/Uflex T85, T71FC, T72FC, T73NRFC, T74NRFC, T81FC/T82FC and T83NRFC/T84NRFC where their manuals specify M66. T72FC, T74NRFC, T82FC and T84NRFC are dual-cable systems and require two equal-length M66 cables.
| Horsepower limit | Use the lowest limit stated for the helm, cable layout, engine connection kit and boat. T85 systems are generally limited to 75 HP; T71FC/T73NRFC families may be approved to 150 HP. The cable alone does not authorise a 150 HP installation. |
| Direct replacement | First read the code and stamped length on the old cable. M66 is commonly cross-referenced to SeaStar/Teleflex SSC62xx/SSC63xx and Morse/Command 290 rotary cables, but verify the helm coupling and engine-end travel. |
| New-install measurement | Follow Multiflex’s A + B + C route measurement and subtract 10 cm, then select the maker’s available nominal length. Measure the real route from helm to gunwale, along the gunwale and to the engine connection; do not use the old generic “jacket + 18 in” rule. |
| Routing | Maintain the minimum bend radius in the helm manual, avoid heat/chafe, and leave enough sweep for full engine tilt and lock-to-lock steering without the cable binding. |
| Not compatible with | Rack-and-pinion cables, hydraulic steering, M58/M90-only helms, or a damaged/corroded steering tube without the correct conversion hardware. |
Part Number Cross Reference
| Cable family | M66 / M66X17 style |
| Common replacement families | SSC6217 / SSC6317 and Morse 290 17 ft — verify interfaces |
| Nominal length code | 17 ft |
| 4Boats SKU | mms206-17 |
Cross-references are selection aids, not blanket fitment. Match the old stamped code, nominal length, helm coupling, output end and travel.
Frequently Asked Questions
Will it fit a T91 or T93 helm?
Do not assume so. Those higher-performance systems are commonly specified with M90-family cables; check the exact helm manual.
Is it safe for every 150 HP outboard?
No. The complete steering system, boat speed, helm rating, connection kit and engine installation must all permit it.
How do I choose 17 ft?
Prefer the old cable’s stamped length for a like-for-like route. For a new route, use the manufacturer’s A+B+C measurement method.
Can I replace only one cable in a dual-cable system?
Both cables should be the same type and length; assess wear and free movement across the complete system before replacement.
Steering is safety-critical. Installation and final lock-to-lock/tilt checks should be completed by a competent marine technician in accordance with the helm and engine manuals.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
