Top 10 Master Lock Coupler Lock – Towing Hitch Locks

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1. Master Lock

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Master Lock 3895DAT, Coupler Lock, Receiver Lock and Latch Lock, 3 Components Keyed Alike

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Master Lock #ad - For more detailed information, please click "See More Product Details". The limited lifetime Warranty provides peace of mind from a brand you can trust. Complete trailer security system KEYED ALIKE. 1 coupler lock, 1 receiver lock & 1 latch lock all keyed alike; 1 key opens all 3 locks. This lock set can not be keyed alike with other locks nor can 2 of these lock sets be keyed alike.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height3.5 Inches
Length9 Inches
Width6.25 Inches
Part Number3895DAT
Model3895DAT
WarrantyMASTER LOCK PRODUCT WARRANTY: Limited Lifetime Warranty. Master Lock Company LLC (Master Lock) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement.

2. Master Lock

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Trailer Locks #389DAT, 2", Master Lock, Universal Size Fits 1-7/8", and 2-5/16" Couplers

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Master Lock #ad - The bright red finish discourages thiefs from messing with your trailer. Simple installation and removal. Universal coupler lock fits virtually all 1-7/8", 2", and 2-5/16" trailer couplers. Resists rust and corrosion. Advanced locking mechanism resists picking and prying. This lock protects unattended trailers and guards against tow-away theft.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height7.5 Inches
Length6.5 Inches
Weight1 Pounds
Width4 Inches
Part Number389DAT
Model389DAT
WarrantyMASTER LOCK PRODUCT WARRANTY Limited Lifetime Warranty Master Lock Company LLC (“Master Lock”) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement.

3. Master Lock

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Master Lock, 3 Keyed Alike Universal Trailer Coupler Locks 379KA-3

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Master Lock #ad - These locks protects unattended trailers and guards against tow-away theft. The same key opens all three locks. The universal trailer coupler lock fits 1-7/8in 48mm, lainson, fulton, Putnam, Hammerblow, Valley, Dutton, 2in 51mm and most 2-5/16in 59mm couplers by Reese, Atwood, Shelby, and UFP.

Zinc alloys offer high strengths to 60, 000 psi and superior elongation for strong designs and formability for bending, crimping and riveting operations. In stock with a delivery time of 1 to 5 days. Few materials provide the strength and toughness of zinc alloys. Each lock weighs 2. 4 lbs. Limited Lifetime warranty. Made with reinforced zinc die-cast resists rust and corrosion. Impact resistance is significantly higher than cast aluminium alloys, plastics, and grey cast iron. And is simple to install and remove.

This is a set of 3 keyed alike trailer coupler/tongue locks and is ideal when needing multiple locks that utilize ONLY one key. Each lock comes with two keys, therefore you will receive a total of six keys with the purchase of this 3 pack. Rekeyable cylinder for keyed alike convenience with an advanced locking mechanism that resists picking and prying. This simple design is difficult to defeat because when it's locked on the trailer the lock rests on top of the coupler see image thus thwarting blunt force from downward hammer strikes.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Part NumberB007C4US1S
Model379KA-3
WarrantyMASTER LOCK PRODUCT WARRANTY Limited Lifetime Warranty Master Lock Company LLC (“Master Lock”) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement.

4. Master Lock

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Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Master Lock 377KA Trailer Hitch Lock

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Master Lock #ad - Trailer hitch lock is constructed from zinc to resist rust and corrosion. Trailer hitch lock fits 1-7/8 in. One trailer coupler lock, two keys. Trailer coupler lock features advanced locking mechanism to resist picking and prying. 51mm and most 2-5/16 in. Trailer lock is best used for vehicles, trailers, and RVs. 48mm, 2 in. 59mm trailer couplers.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height2.8 Inches
Length5.6 Inches
Width4.3 Inches
Part Number377KA
Model377KA
WarrantyLimited Lifetime Warranty

5. Master Lock

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Master Lock 605DAT Trailer Coupler Padlock, 2 Pack

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Master Lock #ad - Protected case-hardened steel shackle resists cutting and built-in anti-sawing pin for maximum protection. Matching colored keyhead for added convenience. This listing is for two 2 solid brass coupler latch locks. Limited lifetime warranty. Solid brass case for corrosion resistance. Works on all 1-7/8" and 2" coupler latches, but not all 2-5/16". Opening measures exactly 3/4". These locks are NOT keyed alike. Simple installation and removal.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height5.56 Inches
Length0.9 Inches
Weight1 Pounds
Width3.5 Inches
Part Number605DAT
Model605DAT
WarrantyAs Labeled

6. Master Lock

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Master Lock 379ATPY Universal Trailer Hitch Lock , Black

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Master Lock #ad - Trailer hitch lock fits 1-7/8 in. 51mm and most 2-5/16 in. Trailer hitch lock is constructed from zinc to resist rust and corrosion. Trailer coupler lock features advanced locking mechanism to resist picking and prying. Includes one trailer coupler lock, two keys. 59mm trailer couplers. Trailer lock is best used for vehicles, trailers, and RVs. 48mm, 2 in.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height4.6 Inches
Length5.1 Inches
Weight2 Pounds
Width3.5 Inches
Part Number379ATPY
Model379ATPY
Warranty1 year manufacturer

7. Master Lock

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Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock, 2847DAT

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Master Lock #ad - Specifications: coupler lock adjusts from 9/16 in. Ease of use: six locking positions provide maximum flexibility; Rekeyable cylinder offers keyed-alike convenience. Lock application: Best used for vehicles, trailers, and RV hitch locks. Includes: one trailer coupler latch lock, two keys. To 2-3/4 in. Durable design: Water-tight cap protects trailer hitch lock from moisture and dirt. Length.
BrandMaster Lock #ad
ManufacturerMASTER LOCK COMPANY LLC #ad
Height2 Inches
Length7 Inches
Weight0.25 Pounds
Width4 Inches
Part Number2847DAT
Model2847DAT
WarrantyLimited Warranty

8. Master Lock

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Master Lock Trailer Lock, Silver , Universal Trailer Coupler Lock, 379DAT , Standard

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Master Lock #ad - 48 mm, 2 in. 59 mm couplers: reese, atwood, shelby, Fulton, Putnam, Valley, Dutton Lainson, Hammerblow, UFP. Trailer hitch lock is easy to install and remove. 51 mm and 2-5/16 in. Best used for vehicles, trailers, and RV hitch locks. Fits most 1-7/8 in. Includes one coupler lock, two keys. Trailer coupler resists rust and corrosion; Advanced locking mechanism resists picking and prying.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height6.56 Inches
Length2.68 Inches
Weight1.8 Pounds
Width7.5 Inches
Part Number379DAT
Model379DAT
WarrantyLimited Warranty

9. Master Lock

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Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle x 9/32" Diameter Pin

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Master Lock #ad - Weather tough seal and water tight cap protects the lock from the elements. The lock works when the trailer is either connected to the tow vehicle or when the trailer is unattached.

The lock prevents the coupler latch from moving, therefore preventing either the coupler to be removed from the ball, or not allowing a ball to be placed into the coupler. Pin length or dimensional fit is 3-1/2" wide with a 9/32" diameter pin which is a standard size on virtually all couplers. This master lock protects and guards against tow-away theft. K1 key blank. Chrome plated for improved wear and corrosion resistance. It has a precision 4 pin tumbler mechanism that resists picking. Fits ufp and surge brake couplers.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height2 Inches
Length9.1 Inches
Weight0.75 Pounds
Width5 Inches
Part Number1471DAT
Model1471DAT
Warranty2 year manufacturer

10. Master Lock

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Fits 1-7/8" and 2" Couplers, Master Lock, 4 Keyed Alike Trailer Coupler Locks 377KA-4

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Master Lock #ad - For 2-5/16" couplers we recommend a different lock, search Master Lock 379KA. Advanced locking mechanism resists picking and prying.

To ensure you get two 4-packs keyed alike, you must order the 8-pack. Durable design: aluminum diecast finish resists rust and corrosion. Limited lifetime Warranty provides peace of mind from a brand you can trust. Specifications: fits 1-7/8", 2" and some 2-5/16" trailer couplers. Easy to install and remove. This listing is for 4 four 377KA coupler locks keyed alike and 8 keys. Attention: if you order two 4-packs they will NOT necessarily be keyed the same.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Weight8 Pounds
Part Number377KA-4
Model377KA-4
WarrantyMASTER LOCK PRODUCT WARRANTY: Limited Lifetime Warranty. Master Lock Company LLC (Master Lock) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement.