Shop Master Coupler Locks for Trailers

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$187.80
Master Lock Universal Trailer Coupler Lock, Fits Most 1-7/8", 2" And 2-5/16" Couplers - 389DAT - Pkg Qty 4
Global Industrial
$187.80
Master Lock Universal Trailer Coupler Lock, Fits Most 1-7/8", 2" And 2-5/16" Couplers - 389DAT - Pkg Qty 4
Global Industrial
$17.41
Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle X 9/32" Diameter Pin
Amazon.com
$17.41
Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle X 9/32" Diameter Pin
Amazon.com
$123.94
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 4 Pack
Amazon.com
Free shipping
$123.94
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 4 Pack
Amazon.com
Free shipping
$59.49
$63.69
Master Lock 378DAT Trailer Coupler Lock, 2-5/16-Inch
Amazon.com
Free shipping
$59.49
$63.69
Master Lock 378DAT Trailer Coupler Lock, 2-5/16-Inch
Amazon.com
Free shipping
$39.81
Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock For Securing Rvs, Horse Trailers, Tool Trailers And More, 379ATPY
Amazon.com
Free shipping
$39.81
Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock For Securing Rvs, Horse Trailers, Tool Trailers And More, 379ATPY
Amazon.com
Free shipping
$87.79
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 3 Pack
Amazon.com
Free shipping
$87.79
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 3 Pack
Amazon.com
Free shipping
$12.57
Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock, 2847DAT
Amazon.com
$12.57
Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock, 2847DAT
Amazon.com
$66.95
Master Lock Trailer Coupler Lock, 2-5/16" - 378DAT
Global Industrial
$66.95
Master Lock Trailer Coupler Lock, 2-5/16" - 378DAT
Global Industrial
$41.95
Master Lock Universal Coupler Lock, Keyed Alike, Fits 1-7/8", 2" & 2-5/16", 379KAATPY
Global Industrial
$41.95
Master Lock Universal Coupler Lock, Keyed Alike, Fits 1-7/8", 2" & 2-5/16", 379KAATPY
Global Industrial
$43.99
Master Lock Universal Coupler Lock | For Trailers | By West Marine
WestMarine
$43.99
Master Lock Universal Coupler Lock | For Trailers | By West Marine
WestMarine
$17.99
Master Lock Adjustable Coupler Latch Lock | For Trailers | By West Marine
WestMarine
$17.99
Master Lock Adjustable Coupler Latch Lock | For Trailers | By West Marine
WestMarine
$34.99
Master Lock Lock And Adjustable Coupler Latch Lock Package | For Trailers | By West Marine
WestMarine
$34.99
Master Lock Lock And Adjustable Coupler Latch Lock Package | For Trailers | By West Marine
WestMarine
$146.30
Master Lock - (4) Keyed Alike Universal Trailer Coupler/Tongue Locks W/8 Keys, 379KA-4
Amazon.com
Free shipping
$146.30
Master Lock - (4) Keyed Alike Universal Trailer Coupler/Tongue Locks W/8 Keys, 379KA-4
Amazon.com
Free shipping
$30.53
Master Lock Hitch Receiver And Coupler Latch Lock Set - Padlock - 1-1/4" And 2" Hitches 2848DAT
etrailer.com
$30.53
Master Lock Hitch Receiver And Coupler Latch Lock Set - Padlock - 1-1/4" And 2" Hitches 2848DAT
etrailer.com
$36.99
$41.99
Master Lock Universal Trailer Coupler Lock
Tractor Supply Co.
11% off
$36.99
$41.99
Master Lock Universal Trailer Coupler Lock
Tractor Supply Co.
$49.59
Master Lock Trailer Coupler Lock Universal 1-7/8-In. 389DAT
DkHardware.com
$49.59
Master Lock Trailer Coupler Lock Universal 1-7/8-In. 389DAT
DkHardware.com
$43.77
Master Lock Coupler Lock: Universal, Powder Coated, (2) Keys, Coupler Lock Model: 389DAT
Grainger
$43.77
Master Lock Coupler Lock: Universal, Powder Coated, (2) Keys, Coupler Lock Model: 389DAT
Grainger
$67.23
Master Lock Trailer Hitch Receiver Lock And Coupler Lock Set - 1-1/4" And 2" Hitches 3794DAT
etrailer.com
$67.23
Master Lock Trailer Hitch Receiver Lock And Coupler Lock Set - 1-1/4" And 2" Hitches 3794DAT
etrailer.com
$32.39
MASTER LOCK Coupler Lock, Universal, 389DAT
Zoro.com
$32.39
MASTER LOCK Coupler Lock, Universal, 389DAT
Zoro.com
$45.99
Marshall Master Lock Trailer Coupler Lock | Camping World
Camping World
$45.99
Marshall Master Lock Trailer Coupler Lock | Camping World
Camping World
$44.99
Master Lock Universal Trailer Coupler Lock, P63555
Tractor Supply Co.
$44.99
Master Lock Universal Trailer Coupler Lock, P63555
Tractor Supply Co.
$43.57
Master Lock Trailer Coupler Lock - Universal For All Sizes 379DAT
DkHardware.com
$43.57
Master Lock Trailer Coupler Lock - Universal For All Sizes 379DAT
DkHardware.com
$44.99
Master Lock 5/8 in. (16Mm) Class III/IV Barbell Trailer Coupler Lock, Keyed Alike
Tractor Supply Co.
$44.99
Master Lock 5/8 in. (16Mm) Class III/IV Barbell Trailer Coupler Lock, Keyed Alike
Tractor Supply Co.
$84.12
Master Lock Coupler Lock: Stainless Steel, Coupler Lock Model: 3794DAT
Grainger
$84.12
Master Lock Coupler Lock: Stainless Steel, Coupler Lock Model: 3794DAT
Grainger
$19.99
Master Lock 9/16in. To 2 3/4in. Long Adjustable Stainless Steel Trailer Coupler Latch Lock, Model 2847DAT
Northern Tool
$19.99
Master Lock 9/16in. To 2 3/4in. Long Adjustable Stainless Steel Trailer Coupler Latch Lock, Model 2847DAT
Northern Tool
$31.47
Master Lock 389DAT Universal Trailer Coupler Lock, Red
Mr. Lock
$31.47
Master Lock 389DAT Universal Trailer Coupler Lock, Red
Mr. Lock
$15.99
Master Lock Solid Brass Coupler Latch Trailer Lock, With 3/4in. Shackle, Model 605DAT
Northern Tool
$15.99
Master Lock Solid Brass Coupler Latch Trailer Lock, With 3/4in. Shackle, Model 605DAT
Northern Tool
$15.94
Master Lock Coupler Latch Lock With Shackle Keyed Lock 3/4 in Dia Shackle Brass Tan 605DAT
DkHardware.com
$15.94
Master Lock Coupler Latch Lock With Shackle Keyed Lock 3/4 in Dia Shackle Brass Tan 605DAT
DkHardware.com
$42.99
Master Lock Stainless Steel Receiver Lock With Adjustable Coupler Latch Lock, 5/8in. (16Mm), Model 1481DAT
Northern Tool
$42.99
Master Lock Stainless Steel Receiver Lock With Adjustable Coupler Latch Lock, 5/8in. (16Mm), Model 1481DAT
Northern Tool
$41.99
Master Lock Trailer Coupler Lock - Red By Sportsman's Warehouse
Sportsman's Warehouse
$41.99
Master Lock Trailer Coupler Lock - Red By Sportsman's Warehouse
Sportsman's Warehouse
$40.65
Master Lock Universal Trailer Coupler Lock Keyed Alike To Key 0501 | 379KAATPY-0501
Lowe's
$40.65
Master Lock Universal Trailer Coupler Lock Keyed Alike To Key 0501 | 379KAATPY-0501
Lowe's
$49.99
Master Lock 389Dat Trailer Coupler Lock Fits 1-7/8 Inch/ 2 Inch And
eBay
Free shipping
$49.99
Master Lock 389Dat Trailer Coupler Lock Fits 1-7/8 Inch/ 2 Inch And
eBay
Free shipping
$50.74
Master Lock 377DAT Trailer Coupler Locks 1St-In-Padlocks
1st-in-Padlocks
$50.74
Master Lock 377DAT Trailer Coupler Locks 1St-In-Padlocks
1st-in-Padlocks
$106.00
Master Lock Trailer Lock, Trailer Coupler Lock, Fits 2-5/16 in.
eBay
$106.00
Master Lock Trailer Lock, Trailer Coupler Lock, Fits 2-5/16 in.
eBay
$50.80
Master Lock 379ATPY Trailer Coupler Lock 1St-In-Padlocks, Keyed Alike - All Locks Open With Same Key (Can Only Be Matched To Keys That Start With "0")
1st-in-Padlocks
$50.80
Master Lock 379ATPY Trailer Coupler Lock 1St-In-Padlocks, Keyed Alike - All Locks Open With Same Key (Can Only Be Matched To Keys That Start With "0")
1st-in-Padlocks
$50.00
Master Lock Universal Trailer Lock Fits 1-7/8" To 2-5/16" Coupler
eBay
Free shipping
$50.00
Master Lock Universal Trailer Lock Fits 1-7/8" To 2-5/16" Coupler
eBay
Free shipping
Master Lock 2-5/16
1:48
Master Lock 2-5/16
Jan 28, 2014
etrailer.com
A Closer Look at the Master Lock Trailer Coupler Lock
2:21
A Closer Look at the Master Lock Trailer Coupler Lock
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etrailer.com
Master Lock Trailer Coupler Latch Lock Review
9:57
Master Lock Trailer Coupler Latch Lock Review
Mar 19, 2021
etrailer.com
Master Lock Set - Coupler Ball Lock, Locking Hitch Pin, and Coupler Latch Lock Master Lock Trailer T
Master Lock Set - Coupler Ball Lock, Locking Hitch Pin, and Coupler Latch Lock Master Lock Trailer T
Feb 13, 2025
etrailer.com
Feature Breakdown: Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set
1:55
Feature Breakdown: Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set
Sep 17, 2009
etrailer.com
Master Lock Universal Trailer Coupler Lock Master Lock Trailer Tongue Lock 379DAT
Master Lock Universal Trailer Coupler Lock Master Lock Trailer Tongue Lock 379DAT
May 15, 2024
etrailer.com
Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA
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Shop Master Coupler Locks for Trailers

Sponsored
About our ads
$187.80
Master Lock Universal Trailer Coupler Lock, Fits Most 1-7/8", 2" And 2-5/16" Couplers - 389DAT - Pkg Qty 4
Global Industrial
$187.80
Master Lock Universal Trailer Coupler Lock, Fits Most 1-7/8", 2" And 2-5/16" Couplers - 389DAT - Pkg Qty 4
Global Industrial
$17.41
Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle X 9/32" Diameter Pin
Amazon.com
$17.41
Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle X 9/32" Diameter Pin
Amazon.com
$123.94
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 4 Pack
Amazon.com
Free shipping
$123.94
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 4 Pack
Amazon.com
Free shipping
$59.49
$63.69
Master Lock 378DAT Trailer Coupler Lock, 2-5/16-Inch
Amazon.com
Free shipping
$59.49
$63.69
Master Lock 378DAT Trailer Coupler Lock, 2-5/16-Inch
Amazon.com
Free shipping
$39.81
Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock For Securing Rvs, Horse Trailers, Tool Trailers And More, 379ATPY
Amazon.com
Free shipping
$39.81
Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock For Securing Rvs, Horse Trailers, Tool Trailers And More, 379ATPY
Amazon.com
Free shipping
$87.79
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 3 Pack
Amazon.com
Free shipping
$87.79
Master Lock - Universal Size Fits 1-7/8", 2", And 2-5/16" Couplers - Trailer Locks 389DAT, 3 Pack
Amazon.com
Free shipping
$12.57
Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock, 2847DAT
Amazon.com
$12.57
Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock, 2847DAT
Amazon.com
$66.95
Master Lock Trailer Coupler Lock, 2-5/16" - 378DAT
Global Industrial
$66.95
Master Lock Trailer Coupler Lock, 2-5/16" - 378DAT
Global Industrial
$41.95
Master Lock Universal Coupler Lock, Keyed Alike, Fits 1-7/8", 2" & 2-5/16", 379KAATPY
Global Industrial
$41.95
Master Lock Universal Coupler Lock, Keyed Alike, Fits 1-7/8", 2" & 2-5/16", 379KAATPY
Global Industrial
$43.99
Master Lock Universal Coupler Lock | For Trailers | By West Marine
WestMarine
$43.99
Master Lock Universal Coupler Lock | For Trailers | By West Marine
WestMarine
$17.99
Master Lock Adjustable Coupler Latch Lock | For Trailers | By West Marine
WestMarine
$17.99
Master Lock Adjustable Coupler Latch Lock | For Trailers | By West Marine
WestMarine
$34.99
Master Lock Lock And Adjustable Coupler Latch Lock Package | For Trailers | By West Marine
WestMarine
$34.99
Master Lock Lock And Adjustable Coupler Latch Lock Package | For Trailers | By West Marine
WestMarine
$146.30
Master Lock - (4) Keyed Alike Universal Trailer Coupler/Tongue Locks W/8 Keys, 379KA-4
Amazon.com
Free shipping
$146.30
Master Lock - (4) Keyed Alike Universal Trailer Coupler/Tongue Locks W/8 Keys, 379KA-4
Amazon.com
Free shipping
$30.53
Master Lock Hitch Receiver And Coupler Latch Lock Set - Padlock - 1-1/4" And 2" Hitches 2848DAT
etrailer.com
$30.53
Master Lock Hitch Receiver And Coupler Latch Lock Set - Padlock - 1-1/4" And 2" Hitches 2848DAT
etrailer.com
$36.99
$41.99
Master Lock Universal Trailer Coupler Lock
Tractor Supply Co.
11% off
$36.99
$41.99
Master Lock Universal Trailer Coupler Lock
Tractor Supply Co.
$49.59
Master Lock Trailer Coupler Lock Universal 1-7/8-In. 389DAT
DkHardware.com
$49.59
Master Lock Trailer Coupler Lock Universal 1-7/8-In. 389DAT
DkHardware.com
$43.77
Master Lock Coupler Lock: Universal, Powder Coated, (2) Keys, Coupler Lock Model: 389DAT
Grainger
$43.77
Master Lock Coupler Lock: Universal, Powder Coated, (2) Keys, Coupler Lock Model: 389DAT
Grainger
$67.23
Master Lock Trailer Hitch Receiver Lock And Coupler Lock Set - 1-1/4" And 2" Hitches 3794DAT
etrailer.com
$67.23
Master Lock Trailer Hitch Receiver Lock And Coupler Lock Set - 1-1/4" And 2" Hitches 3794DAT
etrailer.com