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Yellow steel Bulldog coupler lock with powder-coated finish

California Immobilizer

California Immobilizer G00100 Bulldog Coupler Lock Yellow

SKU CH-G55V-S4HD2

Yellow steel coupler lock fits 2 in and 2 5/16 in trailer couplers with powder-coated finish and two keys

  • Fits 2 in and 2 5/16 in couplers with adjustable design
  • Solid steel wrap-around construction resists cutting and prying
  • Powder-coated yellow finish improves visibility and corrosion resistance
  • Includes two keys for convenient spare access
  • Secures trailer couplers against unauthorized towing

Coupler lock for 2 in and 2 5/16 in hitches

This California Immobilizer G00100 Bulldog coupler lock fits both 2 in and 2 5/16 in trailer couplers. It is designed for vehicle-class trailer applications and secures the hitch against unauthorised removal. The bright yellow powder-coated finish makes the lock highly visible on the job site or in storage.

Adjustable fit for two coupler sizes

The single specification that decides compatibility is the adjustable mechanism that accepts both 2 in and 2 5/16 in couplers. A hole diameter matching these two sizes is required. If your trailer uses a different coupler diameter this lock will not engage correctly.

Solid steel construction with powder coat

The solid steel wrap-around body resists cutting and prying under normal use. Powder coating protects the steel from corrosion without adding moving parts that could rattle. Two keys are included for convenient access.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $146.99
Pricier than about 90% of the 693 comparable items (median $35.99).

Specifications

Product
Brand nameCALIFORNIA IMMOBILIZER

Questions about this item

How does the 2 5/16 in hole diameter work with both coupler sizes on my trailer?

The lock adjusts to fit both 2 in and 2 5/16 in couplers by expanding or contracting the solid steel wrap-around body to match the ball socket diameter.

What does the Bulldog lock type mean for the way it secures the coupler?

Bulldog style means the lock clamps around the coupler latch mechanism itself, preventing the handle from being lifted and the trailer from being hitched.

How much space do I need on the coupler for this yellow steel lock to sit properly?

The powder-coated steel body wraps around the latch area, so you need enough clearance around the coupler handle for the lock arms to close fully.

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