Ultraflex B99 / B101 / B102 Twin Lever Single Engine Top Mount Control

The Ultraflex B99, B101 and B102 are two-lever, single-action top-mount controls for one compatible inboard engine. One lever operates throttle and the other operates shift. All variants provide external throttle-friction adjustment and forward, neutral and reverse shift detents, and are suitable for exposed helm positions such as flybridges. Choose B99 black with chrome levers, B101 white or B102 black.

Special-Order Availability and Lead Time

Special-order range: allow approximately 5 weeks for supplier delivery before dispatch.

The stated lead time is an estimate and can vary with manufacturer and supplier availability. Compatibility should be confirmed before a special-order item is placed, because the model must be selected by its mechanical function, handedness, cable connection and finish rather than by availability alone.

Product Identification

• Brand: Ultraflex
• Product range: B99-B102
• Product category: Mechanical marine engine control
• Available model(s): B99 / B101 / B102
• Manufacturer part number(s): 36854N / 36856P / 36899G
• Supplier catalogue code(s): 4-B99 / 4-B101 / 4-B102
• Store SKU(s): AF-4-B99 / AF-4-B101 / AF-4-B102
• Lever arrangement: Two levers
• Control action: Single action: one lever for throttle and one for shift
• Engine configuration: One engine
• Mounting: Top mount
• Application: Compatible inboard engine installations, including exposed flybridge positions
• Material: Painted marine control assembly
• Warm-up function: Separate throttle and shift levers
• Positive lock in neutral: Shift lever detents provided
• Power trim switch: Not provided
• Neutral safety switch: Optional X12 neutral safety switch, part number 34543Q

What Is This Engine Control Used For?

The B99-B102 uses separate single-action levers so throttle and shift are controlled independently. One lever changes engine speed and the second selects forward, neutral or reverse.

It is intended for compatible inboard engine installations, including exposed flybridge positions. The control does not determine engine horsepower or gearbox capacity; the engine, gearbox, control cable and connection hardware must remain within their manufacturer ratings.

What Is Included?

The selected control is supplied with:

• Selected Ultraflex B99-B102 control in the chosen model and finish

Not included:

• Engine control cables
• Engine-end cable adaptors or clevises
• Optional neutral safety switch
• Connection kits not expressly stated as included
• Installation labour and boat-specific mounting reinforcement

Which Engines and Installations Are Compatible?

This control is intended for compatible inboard engine installations, including exposed flybridge positions. Before ordering, confirm:

• The number of engines matches the control configuration
• The engine and gearbox use compatible mechanical throttle and shift cables
• The selected cable model is listed as compatible or has the correct Ultraflex connection kit
• The mounting position and handedness match the helm layout
• The panel provides sufficient clearance for the control mechanism and cable bends
• The lever can move through its complete range without contacting the steering wheel, instruments or structure
• The engine-end cable fittings and travel match the engine manufacturer requirements

Compatibility is determined by the complete control, cable, engine and gearbox arrangement rather than by the engine brand alone.

How Does the Control Operate?

• Lever configuration: Two levers
• Control action: Single action: one lever for throttle and one for shift
• Warm-up: Separate throttle and shift levers
• Throttle friction: Throttle friction adjustable from outside
• Neutral locking: Shift lever detents provided
• Power trim: Not provided

The warm-up function must only be engaged with the control in neutral. After warm-up, return the lever to the neutral position before re-engaging the shift mechanism.

Which Control Cables Are Compatible?

The following Ultraflex control cables connect without an additional conversion kit:

• C2
• C8
• MACHZero

The following cables require the stated connection kit:

• C22: K32 connection kit, part number 34662Z; sold separately

Cable compatibility must be confirmed by the exact control model and cable model rather than by the general “33C” description alone. The engine-end adaptor required by the engine manufacturer is separate from the control-box connection kit.

Which Model and Finish Options Are Available?

• B99 / 36854N / 4-B99: Black-painted housing with chrome-plated levers
• B101 / 36856P / 4-B101: White-painted housing and levers
• B102 / 36899G / 4-B102: Black-painted housing and levers

The variants share the common control architecture and compatibility stated in this listing. Select by exact model, manufacturer part number, finish and any model-specific function shown in the specification table.

Dimensions and Fitment

• Use the current B99-B102 mounting drawing and dashboard cut-out template

The dimensional drawing must be checked against the physical helm station before the panel is cut. Product photographs are not a mounting template. Allow additional clearance for cable end fittings, smooth cable bends and future servicing.

Optional Safety Switches and Accessories

• X12 neutral safety switch, part number 34543Q
• K32 C22 connection kit, part number 34662Z

The stated safety compliance is conditional: EN ISO 11547 when the optional X12 switch is installed. An optional switch is not included unless explicitly shown as a supplied component.

Construction and Design

• Painted marine control assembly
• Two levers
• Single action: one lever for throttle and one for shift
• Top mount
• Throttle friction adjustable from outside
• Separate throttle and shift levers
• Shift lever detents provided
• Not provided
• Fully mechanical operation for the models included in this listing
• Designed for marine throttle and shift control applications

The control mechanism must be mounted to a rigid panel capable of supporting repeated lever loads. Cable routing and adjustment have a direct effect on shift engagement, throttle return and overall operating effort.

Installation and Use

Marine engine controls are safety-critical. Installation and adjustment should be carried out by a competent marine technician using the current Ultraflex instructions and the engine manufacturer’s cable-travel requirements.

Before installation:

• Confirm the exact control model and manufacturer part number
• Confirm the engine count, mounting position and handedness
• Identify the throttle cable and shift cable
• Obtain every required Ultraflex connection kit
• Check the panel cut-out and behind-panel clearance
• Inspect the control cables for corrosion, stiffness, kinks or damaged end fittings
• Place the engine and gearbox controls in their specified neutral and idle positions

After installation and adjustment, check that:

• Forward, neutral and reverse engage positively
• The throttle returns to idle without binding
• The warm-up function operates only as intended
• Any positive neutral lock engages and releases correctly
• Any trim switch operates in the correct direction
• The engine cannot start in gear when the optional safety switch is fitted
• Neither cable is under tension at the ends of lever travel
• The cables do not rub, kink or pass around bends tighter than their permitted radius
• All fasteners, pivots and cable retainers remain secure

The boat must not be used if the control is stiff, does not return to idle, fails to select neutral positively, allows unintended gear engagement or shows abnormal free movement.

Frequently Asked Questions

Does this control include the engine control cables?

No. Throttle and shift cables are supplied separately.

Is the neutral safety switch included?

No. Optional X12 neutral safety switch, part number 34543Q is optional unless a separate package explicitly states otherwise.

Can any 33C-style cable be fitted?

Not automatically. Use the exact Ultraflex cable list and connection-kit requirements shown in this listing.

Can the control be installed without checking the mounting drawing?

No. The panel cut-out, mechanism depth and cable routing must be checked before drilling.

Does each lever control an engine?

No. One lever controls throttle and the other controls shift for one engine.

Is this product available for immediate dispatch?

It is a special-order product. Allow approximately five weeks, subject to supplier availability.

Is a power trim switch fitted?

No. This model does not include a power trim switch.

Key Features

• Ultraflex B99-B102 mechanical engine control
• Two levers
• Single action: one lever for throttle and one for shift
• One engine
• Top mount
• Compatible inboard engine installations, including exposed flybridge positions
• Painted marine control assembly
• Throttle friction adjustable from outside
• Separate throttle and shift levers
• Shift lever detents provided
• Not provided
• Optional X12 neutral safety switch, part number 34543Q
• EN ISO 11547 when the optional X12 switch is installed
• Manufacturer part number(s): 36854N / 36856P / 36899G
• Engine control cables supplied separately
• Special order with approximately five-week supplier lead time