Top 10 Master Lock Trailer Lock – Towing Hitch Locks

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1. Master Lock

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

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Master Lock #ad - We can not key two 2 of these locks the same. Resists rust and corrosion. Simple installation and removal. The similar 379KA coupler locks are available keyed alike. The only difference between this one 389DAT and the 379KA is the color. Universal coupler lock fits virtually all 1-7/8", 2", and 2-5/16" trailer couplers. Bright red finish discourages thief's from messing with your trailer. Advanced locking mechanism resists picking and prying.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height7.5 Inches
Length6.5 Inches
Weight2 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.

2. Master Lock

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Master Lock 379ATPY Universal Trailer Hitch Lock

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

3. Master Lock

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

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Master Lock #ad - One trailer coupler lock, two keys. 59mm trailer couplers. Trailer coupler lock features advanced locking mechanism to resist picking and prying. Trailer hitch lock fits 1-7/8 in. 51mm and most 2-5/16 in. 48mm, 2 in. Trailer lock is best used for vehicles, trailers, and RVs. Trailer hitch lock is constructed from zinc to resist rust and corrosion.
BrandMaster Lock #ad
ManufacturerMASTER LOCK #ad
Height2.8 Inches
Length5.6 Inches
Weight2.2 Pounds
Width4.3 Inches
Part Number377KA
Model377KA
WarrantyLimited Lifetime Warranty

4. Master Lock

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

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

5. Master Lock

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Master Lock 2866DAT 1/2 in. and 5/8 in. Swivel Head Receiver Lock for Class I-IV, Black, 1 Pack

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Master Lock #ad - Included components: Two Pins Two Keys One Locking Swivel Head. Locking hitch pin fits 1/2 in. Receiver lock provides added security and theft deterrence while towing.

1/2 in. Locking head rotates 360 degrees allowing keyway to conveniently face forward; receiver lock features push-to-lock locking mechanism to ensure a secure lock every time; Push head firmly onto the pin and remove key. Trailer hitch locking pin is rated up to 3, 5/8 in. 13 mm and 5/8 in. 70 mm. Trailer hitch locking pin is rated up to 10, 500 lbs Class I and II, 000 lbs Class III and IV. Snap-on cover provides weather resistance and prevents dirt and moisture from entering keyway, four-pin cylinder for added security to prevent lock picking. 16 mm receivers; usable length of each chrome hitch pin lock is 2-3/4 in.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height1.58 Inches
Length8.56 Inches
Weight1.1 Pounds
Width3.75 Inches
Part Number2688DAT
Model2866DAT
WarrantyLimited Lifetime Warranty

6. Master Lock

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Master Lock 470-377DAT Nickel Chrome Finish, Zinc Die Cast Coupler Lock

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Master Lock #ad - Uses the master lock K1 key system. Fits 1-7/8" and 2" couplers. One of the unique features of this product is the ratcheting shaft which allows it to fit most 1-7/8 inch and 2 inch couplers. Nickel-plated, zinc die-cast body with a front access key-way for ease of accessibility. Adjusts to fit many makes and models. Advance locking mechanism resists picking and prying.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height2.68 Inches
Length6.56 Inches
Weight1 Pounds
Width7.5 Inches
Part Number470-377DAT
Model377DAT
WarrantyLIMITED WARRANTY

7. Master Lock

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Master Lock 1481DAT Stainless Steel Barbell Receiver and Adjustable Coupler Lock Set

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Master Lock #ad - Adjustable coupler latch lock, locks from 9/16 inch to 2-3/4 inch. Stainless steel keyed alike receiver lock and coupler latch lock. Weather tough seal and water tight cap protects lock from moisture. 5/8 inch receiver lock has Push to Lock locking mechanism push lock body onto pin firmly and remove key. Usable length of receiver pin is 2-3/4 inch.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height8.88 Inches
Length7 Inches
Weight2 Pounds
Width5.75 Inches
Part Number1481DATSC
Model1481DATSC

8. Master Lock

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Master Lock 2848DAT Key Alike Set with Receiver and Coupler Latch Locks, 2-Piece Set

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Master Lock #ad - Receiver openings. And 5/8 in. Durable design: weather Tough seal and watertight cap provide protection from moisture and dirt. Includes: one receiver lock, one stainless steel coupler latch lock, two keys; both keys open both locks. Specifications: usable length of receiver pin is 2-3/4 in. Stainless steel lock fits 1/2 in. Ease of use: receiver lock features convenient Push to Lock locking mechanism: push lock body firmly onto the pin and remove key. Lock application: Best used for vehicles, trailers, and RV hitch locks.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height1.41 Inches
Length8.56 Inches
Weight1.12 Pounds
Width4.88 Inches
Part Number2848DATSC
Model2848DATSC
WarrantyLimited Lifetime Warranty

9. Master Lock

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1469DAT, Master Lock Receiver Lock, Stainless Steel Barbell Receiver Lock, Fits 5/8 in. Receivers

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Master Lock #ad - Specifications: usable length of receiver pin is 3-1/2 in. Stainless steel lock fits 5/8 in. Includes: one trailer reciver lock, two keys.

Lock application: Best used for vehicles, trailers, and RV hitch locks. Ease of use: receiver lock features convenient Push to Lock locking mechanism: push lock body firmly onto the pin and remove key. Durable design: weather tough seal and watertight cap provide protection from moisture and dirt; Hitch lock is rated for Class III/IV 10, 000 pound load. Receiver openings; extended length shaft fits toyota tundra, Ford F-150/F-250/F-350, GMC/Chevy 2500/3500 and Dodge trucks with heavy-duty tow packages.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height2 Inches
Length8 Inches
Weight0.7 Pounds
Width4 Inches
Part Number1469DAT
Model1469DAT
WarrantyLimited Lifetime Warranty

10. Master Lock

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

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Master Lock #ad - Made with reinforced zinc die-cast resists rust and corrosion. Rekeyable cylinder for keyed alike convenience with an advanced locking mechanism that resists picking and prying. It also rotates less rigidity making it harder to break with sledge hammer force.

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. Zinc alloys offer high strengths to 60, plastics, crimping and riveting operations. Few materials provide the strength and toughness of zinc alloys. The same key opens all three locks. Impact resistance is significantly higher than cast aluminium alloys, 000 psi and superior elongation for strong designs and formability for bending, and grey cast iron.

Limited Lifetime warranty. Each lock weighs 2. 4 lbs. The universal trailer coupler lock fits 1-7/8in 48mm, hammerblow, fulton, Putnam, Dutton, Lainson, 2in 51mm and most 2-5/16in 59mm couplers by Reese, Atwood, Shelby, Valley, and UFP. These locks protects unattended trailers and guards against tow-away theft. And is simple to install and remove.
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.