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Bulldog / Ram Coupler Locks

Bulldog® trailer couplers have long been the industry standard for heavy-duty towing. Here Heartland Lock offer a variety of trailer coupler locks that fit the Bulldog® coupler, including The Collar®, the best product we know of for locking the Bulldog® coupler while your trailer is attached to your vehicle. Most of these also fit similar couplers such as those made by Ram and Butler.



Product Image Item Name- Price
The Collar® Coupler Lock for Bulldog-style Couple

The Collar® Coupler Lock for Bulldog-style Couple

The ONLY lock on the market that will securely lock your Bulldog®, Butler or RAM coupler whether attached to or detached from a towing vehicle....
$44.95

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Blaylock TL20 Bulldog Coupler Locks

Blaylock TL20 Bulldog Coupler Locks

Precision-made of heavy grade aircraft aluminum. Features a 3/4" steel locking pin. Requires a padlock such as the 70mm stainless steel disk padlock....
$25.95

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Trimax TC2 Coupler Lock

Trimax TC2 Coupler Lock

Span = 2-1/2". Machine hardened stainless steel 9/32" shackle. High security tubular key. Comes with 2 rugged tubular keys. Weatherproof lock cap...
$15.95

... more info

Trimax SXTC2 Coupler Lock

Trimax SXTC2 Coupler Lock

Span = 2-1/2". Stainless steel construction. Machine hardened stainless steel 9/32" shackle. High security tubular key. Two tubular keys included....
$22.95

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Trimax TC3 Coupler Lock

Trimax TC3 Coupler Lock

Span = 3-1/2". Machine hardened 9/32" stainless steel shackle. High security tubular key. Comes with 2 rugged tubular keys. Weatherproof lock cap...
$15.95

... more info

Trimax SXTC3 Coupler Lock

Trimax SXTC3 Coupler Lock

Span = 3-1/2". Stainless steel construction. Machine hardened stainless steel 9/32" shackle. High security tubular key. Comes with 2 rugged tubular...
$22.95

... more info

Trimax SXTC123 Stainless Steel Coupler Lock

Trimax SXTC123 Stainless Steel Coupler Lock

Secures the latch on many trailer coupler latches. Stainless Steel 9/32" (approx.) shaft. Head slides to fits couplers with 7/8, 2-1/2" and 3-1/2"...
$21.95

... more info

Trimax TC123 Coupler Lock

Trimax TC123 Coupler Lock

Secures the latch on many trailer coupler latches. Stainless Steel 9/32" (approx.) shaft. Head slides to fits couplers with 7/8, 2-1/2" and 3-1/2"...
$15.95

... more info

Trimax SXTM3123 Stainless Steel Combo Set

Trimax SXTM3123 Stainless Steel Combo Set

Set includes SXTC123 coupler lock and SXTS32 Universal Receiver Lock both using the same key. Both are stainless steel. The Trimax SXTC123 has a...
$49.95

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Trimax TM3123 Combo Set

Trimax TM3123 Combo Set

Set includes TC123 coupler lock and TS32 Universal Receiver Lock both using the same key. The Trimax TC123 has a 9/32" (approx.) shaft that is...
$33.95

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Trimax TM3123 Combo Set - Flat Key

Trimax TM3123 Combo Set - Flat Key

Set includes TC123 coupler lock and TS32 Universal Receiver Lock both using the same key. The Trimax TC123 has a 5/16" shaft that is lockable at 13...
$33.95  $19.95
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Trimax UMAX 50 Universal Coupler Lock

Trimax UMAX 50 Universal Coupler Lock

Fits all 1-7/8", 2" and 2-5/16" couplers. Huge 5/8" hardened steel shackle. Powder coated aluminum body resists rust. Huge 6-tooth dual ratchet...
$39.95

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Trimax UMAX 100 Universal Coupler Lock

Trimax UMAX 100 Universal Coupler Lock

Fits all 1-7/8", 2" and 2-5/16" couplers. Huge 5/8" hardened steel shackle. Attractive ballistic grade housing absorbs hammer blows and protects...
$57.95

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Trimax TCP50 - Keyed Alike Towing Set

Trimax TCP50 - Keyed Alike Towing Set

Set contains a Umax50 Universal Coupler Lock, a TC123 Latch Lock and a TS32 Receiver Lock ALL OF WHICH USE THE SAME KEY. The Umax50 Universal...
$82.95

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Trimax TCP100 - Keyed Alike Towing Set

Trimax TCP100 - Keyed Alike Towing Set

Set contains a Umax100 Universal Coupler Lock, a TC123 Latch Lock and a TS32 Receiver Lock ALL OF WHICH USE THE SAME KEY. The Umax100 Universal...
$99.95

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Master #379DAT Universal Couple Lock

Master #379DAT Universal Couple Lock

Fits 1-7/8", 2", and 2-5/16" couplers manufactured by Reese®, Fulton, Valley, Atwood®, Shelby, Putnam, Hammerblow, Dutton Lainson, and UFP....
$24.95

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Master #379KA Universal Couple Lock

Master #379KA Universal Couple Lock

Fits 1-7/8", 2", and 2-5/16" couplers manufactured by Reese®, Fulton, Valley, Atwood®, Shelby, Putnam, Hammerblow, Dutton Lainson, and UFP....
$29.95

... more info



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