Ultraflex L25 Jaw Clevis For 33C Control Cable

The Ultraflex L25 / 4-L25 Control Cable Clevis is a plated-steel cable-end fitting for compatible C0, C2, C7, C8, MACHZero and universal 33C / 3300 engine control cables. Its 10-32 UNF female thread screws onto the cable’s moving threaded rod, while the 7.1mm jaw straddles a throttle, gear-shift, gearbox or other operating lever. A 6.4mm clevis pin passes through the lever to create an articulated connection and is secured using the supplied split pin.

Product Identification

• Brand: Ultraflex
• Model: L25
• Product code: 4-L25
• Manufacturer part number: 31906D
• Extended manufacturer reference: 1A0031906D
• Product category: Engine control cable end fitting
• Alternative description: Cable-end clevis
• Material: Plated steel
• Cable-end thread: 10-32 UNF female
• Alternative thread description: 3/16in UNF
• Nominal product description: 6mm jaw clevis
• Published internal jaw width: 7.1mm
• Clevis pin diameter: 6.4mm / approximately 1/4in
• Cable format: Universal 3300 / 33C
• Cable capacity: One control cable
• Primary function: Connects a moving cable rod to a mechanical operating lever
• Typical applications: Gear shift, throttle and compatible push-pull controls
• Pin retainer: Split pin
• Closest Multiflex functional equivalent: K5 / LM-K-5
• Control cable: Supplied separately
• Cable outer clamp: Supplied separately

What Is the Ultraflex L25 Used For?

The L25 forms the pinned connection between the moving threaded rod of a mechanical control cable and the lever operated by that cable.

It can form part of a correctly specified:

• Gear-shift control installation
• Throttle-control installation
• Inboard engine control system
• Outboard engine control system
• Sterndrive control installation
• Gearbox selector connection
• Choke or engine-stop control using a compatible cable
• Replacement C0 cable installation
• Replacement C2 cable installation
• Replacement C7 cable installation
• Replacement C8 cable installation
• Replacement MACHZero cable installation
• Compatible universal 33C / 3300 cable installation

When the remote control is operated, the cable rod pushes or pulls the L25. The clevis pin transfers this movement to the connected lever while allowing the joint to pivot as the lever moves through its operating arc.

What Is Included?

• 1 x Ultraflex L25 / 4-L25 plated-steel clevis body
• 1 x 6.4mm clevis pin
• 1 x split pin

Washers, cable locknuts and lever spacers are not identified as standard included components and should be checked against the supplied package.

Not included unless expressly stated:

• Ultraflex C0 control cable
• Ultraflex C2 control cable
• Ultraflex C7 control cable
• Ultraflex C8 control cable
• Ultraflex MACHZero control cable
• Remote control lever or control box
• Engine throttle lever
• Gearbox selector lever
• Cable outer-casing clamp
• Structural support bracket
• Cable locknut
• Ball joint
• A second clevis
• Other engine-specific linkage fittings

Which Control Cables Are Compatible?

• Ultraflex C0
• Ultraflex C2
• Ultraflex C7
• Ultraflex C8
• Ultraflex MACHZero
• Compatible universal 3300 / 33C-style control cables

The selected cable must have a compatible 10-32 UNF male threaded moving end. Cross-brand compatibility also depends on the jaw width, pin diameter, lever thickness and linkage geometry.

Is the L25 Suitable for Universal 33C / 3300 Control Cables?

Yes. The L25 is designed for compatible 330 / 3300 / 33C-series engine control cables.

Before ordering, confirm:

• 10-32 UNF male cable-end thread
• Required clevis jaw width
• Operating-lever thickness
• 6.4mm pin requirement
• Operating-lever hole diameter
• Required articulation
• Cable travel
• Operating load
• Available installation clearance

A matching cable-end thread alone does not guarantee complete compatibility.

What Does 6mm Jaw Mean?

The L25 is commonly marketed as a 6mm jaw clevis, but the published dimensional data specify:

• Internal jaw width: 7.1mm
• Clevis pin diameter: 6.4mm

The nominal 6mm description should not be used as the exact internal jaw measurement.

What Thread Does the L25 Use?

• Female thread: 10-32 UNF
• Alternative description: 3/16in UNF

The female thread screws onto the male threaded moving rod of a compatible control cable.

What Is the L25 Pin Diameter?

• Clevis pin diameter: 6.4mm
• Approximate imperial diameter: 1/4in

Check the physical clevis pin and operating-lever hole before drilling or modifying the linkage.

How Does the L25 Clevis Work?

1. Screw the L25 onto the control cable’s 10-32 UNF threaded moving rod.
2. Position the operating lever between the clevis jaws.
3. Align the lever hole with the clevis pin holes.
4. Pass the 6.4mm pin through the clevis and operating lever.
5. Secure the pin using the supplied split pin.
6. Adjust the cable to the correct neutral, idle or rest position.
7. Check that the clevis pivots freely throughout the lever’s movement.

Which Multiflex Clevis Is Equivalent?

The closest Multiflex functional equivalent is:

• Multiflex K5
• Extended reference: LM-K-5
• Thread: 10-32 UNF
• Compatible Multiflex cables: EC-033 and EC-133

The K5 performs the same general cable-to-lever connection function as the L25.

Is the Multiflex K5 a Direct Replacement for the L25?

Ultraflex L25

• Jaw width: 7.1mm
• Pin diameter: 6.4mm
• Thread: 10-32 UNF
• Material: Plated steel

Multiflex K5 / LM-K-5

• Jaw width: 8.7mm
• Pin diameter: 7.9mm
• Thread: 10-32 UNF
• Suitable for EC-033 and EC-133 cables

The products share the same cable-end thread and general clevis function, but the K5 requires a larger operating-lever hole and has a wider jaw. Confirm the lever dimensions before substitution.

Does the L25 Secure the Cable Outer Casing?

No. The L25 connects the moving cable rod to the operating lever.

The stationary cable outer casing must be secured separately using:

• Ultraflex L14 saddle clamp
• A remote-control-box retaining arrangement
• An engine-side support bracket
• Another approved control cable clamp

Does the L25 Hold One or Two Control Cables?

The L25 connects one control cable to one operating lever. Separate shift and throttle cables may require one clevis for each mechanism.

Is the Operating Lever Included?

No. The L25 is the cable-end clevis fitting only. The control cable, operating lever and cable-support components are supplied separately.

Is the L25 Plated Steel?

Yes. The L25 is manufactured from plated steel.

The steel grade, plating material, plating thickness and formal corrosion-test specification are not published.

Can the L25 Be Used with Steering Cables?

No. The L25 is intended for mechanical engine control cables, including compatible shift and throttle cables.

It is not intended for rotary steering cables, rack-and-pinion steering cables, hydraulic steering hoses or steering link arms.

Is a Maximum Working Load Published?

No maximum working load or proof load is stated. Select the L25 according to the control cable, operating lever, engine or gearbox requirements and complete linkage geometry.

Construction and Design

• Ultraflex cable-end clevis
• Model L25
• Product code 4-L25
• Manufacturer part number 31906D
• Extended reference 1A0031906D
• Plated-steel construction
• Designed for one mechanical control cable
• Compatible with C0
• Compatible with C2
• Compatible with C7
• Compatible with C8
• Compatible with MACHZero
• Suitable for compatible universal 33C / 3300 cables
• 10-32 UNF female cable thread
• Nominal 6mm jaw product description
• Published 7.1mm internal jaw width
• 6.4mm clevis pin
• Forked jaw connection
• Split pin included
• Connects a moving cable rod to a mechanical lever
• Does not secure the cable outer casing
• No control cable included
• No operating lever included
• Maximum working load not published

Installation and Safety

• Confirm that the product is the L25 / 4-L25
• Confirm that the cable has a 10-32 UNF male threaded rod
• Verify compatibility with C0, C2, C7, C8, MACHZero or another correctly matched 33C cable
• Check that the operating lever fits within the 7.1mm jaw
• Check the lever-hole diameter against the 6.4mm clevis pin
• Inspect the cable rod thread for damage
• Start the clevis on the cable thread by hand
• Do not cross-thread the clevis
• Maintain sufficient cable-thread engagement
• Position the lever centrally between the clevis jaws
• Insert the clevis pin fully through both jaws and the lever
• Install the split pin completely
• Ensure the clevis articulates freely
• Align the control cable to avoid side loading
• Secure the cable outer casing separately
• Maintain the cable manufacturer’s minimum bend radius
• Operate the control through its complete range
• Confirm positive gear positions where used for shifting
• Confirm that the throttle returns fully to idle
• Check that the cable rod does not bottom out or overtravel
• Inspect the clevis, pin and split pin regularly
• Replace worn, bent, loose or damaged components
• Do not operate the control system if the clevis binds

Engine shift and throttle systems are safety-critical. Installation should be completed according to the current Ultraflex, engine, gearbox and remote-control instructions by a competent marine technician.

Key Features

• Ultraflex L25 control cable-end clevis
• Product code 4-L25
• Manufacturer part number 31906D
• Extended reference 1A0031906D
• Plated-steel construction
• Compatible with Ultraflex C0, C2, C7, C8 and MACHZero cables
• Suitable for compatible universal 33C / 3300 cables
• 10-32 UNF female cable thread
• Nominal 6mm jaw description
• Published 7.1mm internal jaw width
• 6.4mm clevis pin
• Forked clevis-jaw arrangement
• Clevis pin included
• Split pin included
• Closest Multiflex functional equivalent is K5 / LM-K-5
• Multiflex K5 has a larger 8.7mm jaw and 7.9mm pin
• Does not secure the stationary cable casing
• Ultraflex L14 cable clamp may be required separately
• Control cable and operating lever supplied separately
• Maximum working load not published