Ultraflex B183 Side-Mount Single Lever Control No Trim 38945B
4-B183
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Ultraflex B183 Side-Mount Single Lever Control No Trim 38945B
Throttle and shift control with positive neutral lock
The Ultraflex B183 is a side-mount, single-lever dual-action control for throttle and gear operation on compatible outboard, inboard and sterndrive installations. A positive lock in neutral helps prevent accidental gear engagement, while the pull-out handle permits throttle-only warm-up.
Key Features
- Single lever operates both throttle and shift
- Positive lock-in-neutral mechanism
- Horizontal or vertical mounting on port or starboard side
- External throttle-friction adjustment
- Pull-out throttle-only warm-up function
Technical Specs
| Model | B183 |
| Manufacturer reference | 38945B |
| Mounting | Side mount; horizontal or vertical; port or starboard |
| Power-trim switch | Not provided |
| Neutral-start switch | X12 optional |
| Direct cable families | C2, C8, C14, MACHZero, MACH14 |
| Adaptor-required families | C5, C16, MACH5 with K35 |
| 4Boats SKU | 4-B183 |
Compatibility / Fitment Guide
Direct cable fit: Ultraflex C2, C8, C14, MACHZero and MACH14 control cables. K35 / 34730U is required for C5, C16 and MACH5 cables. The optional X12 neutral-safety switch enables a start-in-neutral interlock when correctly wired.
Engine fit: suitable for single-engine outboard, inboard or sterndrive mechanical throttle/shift systems only after the cable’s engine-end attachment and required adaptor kit are confirmed. It is not a digital/electronic throttle-and-shift control.
Exclusions: B183 has no trim switch; B184 is the trim-switch version. Do not use C22, C36 or MACH36 without an explicitly approved conversion. Check lever clearance, panel cut-out and push/pull cable action before installation.
Part Number Cross Reference
| Ultraflex B183 | 38945B |
| 4Boats / Aquafax | 4-B183 |
| Cable adaptor | K35 / 34730U for C5, C16, MACH5 |
| Neutral safety switch | X12 (optional) |
| Trim-switch alternative | B184 (different model) |
Frequently Asked Questions
Does this control include power trim?
No. B183 has no trim switch; B184 is the corresponding trim-switch model.
Can it mount on either side?
Yes. It can be mounted horizontally or vertically on port or starboard, subject to the installation drawing and lever clearance.
Which cables fit without an adaptor?
Ultraflex C2, C8, C14, MACHZero and MACH14.
Is the neutral safety switch included?
No. X12 is optional.
Important: After installation, verify neutral interlock, throttle idle, forward/reverse engagement and full travel with the engine stopped before sea trial.
For the products under £150 the shipping is £6.99.
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