{"@context":"https://schema.org","@type":"Product","name":"Grundig Trailer Coupler Lock for 1-7/8\", 2\" & 2-5/16\" Hitches - Aluminum Hitch Lock with 2 Keys, Fits RV, Boat & Utility Trailers","description":"I. Product Overview When a trailer sits unhitched in a driveway or storage lot, the coupler is what connects it to any other vehicle. This lock closes the coupler, so it stays locked until you open it with the key. One lock covers the three common coupler sizes found on travel trailers, boat trailers, utility trailers, and off-road trailers — in black, red, or yellow. II. Product Features One Lock, Most Trailers: Covers the three common coupler sizes, so you don't need a separate lock for each trailer. Aluminum Body, Brass Cylinder: An aluminum shell with a brass lock core that keeps working through rain, dust, and road spray. III. Product Specifications Product Type: Trailer Coupler Lock Fits Coupler Sizes: 1-7/8\", 2\", 2-5/16\" Material: Aluminum body, brass lock cylinder Color: Black, Red, Yellow Item Weight: 605 g (21.3 oz) Product Dimensions: 11 x 7.6 x 9.2 cm (4.3 x 3.0 x 3.6 in) IMPORTANT: Fits 1-7/8\", 2\", and 2-5/16\" couplers only. Measure your coupler before ordering — this lock is not designed for other sizes. IV. Package Includes 1 x Trailer Coupler Lock 2 x Keys V. Precautions Test the Fit First: With the trailer unhitched, install the lock and confirm the coupler latch will not open. Remove It Before Hitching: The lock blocks the coupler, so take it off before backing up to the trailer. Keep the Cylinder Clean: Rinse road salt and grit off the lock, and use graphite or silicone spray if the key starts to stick.","descriptionSections":[{"heading":"I. Product Overview","text":"When a trailer sits unhitched in a driveway or storage lot, the coupler is what connects it to any other vehicle. This lock closes the coupler, so it stays locked until you open it with the key. One lock covers the three common coupler sizes found on travel trailers, boat trailers, utility trailers, and off-road trailers — in black, red, or yellow.","blocks":[{"kind":"paragraph","text":"When a trailer sits unhitched in a driveway or storage lot, the coupler is what connects it to any other vehicle. This lock closes the coupler, so it stays locked until you open it with the key."},{"kind":"paragraph","text":"One lock covers the three common coupler sizes found on travel trailers, boat trailers, utility trailers, and off-road trailers — in black, red, or yellow."}],"sourceId":"m1"},{"heading":"II. Product Features","text":"One Lock, Most Trailers: Covers the three common coupler sizes, so you don't need a separate lock for each trailer. Aluminum Body, Brass Cylinder: An aluminum shell with a brass lock core that keeps working through rain, dust, and road spray.","blocks":[{"kind":"bullet","text":"One Lock, Most Trailers: Covers the three common coupler sizes, so you don't need a separate lock for each trailer."},{"kind":"bullet","text":"Aluminum Body, Brass Cylinder: An aluminum shell with a brass lock core that keeps working through rain, dust, and road spray."}],"sourceId":"m2"},{"heading":"III. Product Specifications","text":"Product Type: Trailer Coupler Lock Fits Coupler Sizes: 1-7/8\", 2\", 2-5/16\" Material: Aluminum body, brass lock cylinder Color: Black, Red, Yellow Item Weight: 605 g (21.3 oz) Product Dimensions: 11 x 7.6 x 9.2 cm (4.3 x 3.0 x 3.6 in) IMPORTANT: Fits 1-7/8\", 2\", and 2-5/16\" couplers only. Measure your coupler before ordering — this lock is not designed for other sizes.","blocks":[{"kind":"bullet","text":"Product Type: Trailer Coupler Lock"},{"kind":"bullet","text":"Fits Coupler Sizes: 1-7/8\", 2\", 2-5/16\""},{"kind":"bullet","text":"Material: Aluminum body, brass lock cylinder"},{"kind":"bullet","text":"Color: Black, Red, Yellow"},{"kind":"bullet","text":"Item Weight: 605 g (21.3 oz)"},{"kind":"bullet","text":"Product Dimensions: 11 x 7.6 x 9.2 cm (4.3 x 3.0 x 3.6 in)"},{"kind":"paragraph","text":"IMPORTANT: Fits 1-7/8\", 2\", and 2-5/16\" couplers only. Measure your coupler before ordering — this lock is not designed for other sizes."}],"sourceId":"m3"},{"heading":"IV. Package Includes","text":"1 x Trailer Coupler Lock 2 x Keys","blocks":[{"kind":"bullet","text":"1 x Trailer Coupler Lock"},{"kind":"bullet","text":"2 x Keys"}],"sourceId":"m4"},{"heading":"V. Precautions","text":"Test the Fit First: With the trailer unhitched, install the lock and confirm the coupler latch will not open. Remove It Before Hitching: The lock blocks the coupler, so take it off before backing up to the trailer. Keep the Cylinder Clean: Rinse road salt and grit off the lock, and use graphite or silicone spray if the key starts to stick.","blocks":[{"kind":"bullet","text":"Test the Fit First: With the trailer unhitched, install the lock and confirm the coupler latch will not open."},{"kind":"bullet","text":"Remove It Before Hitching: The lock blocks the coupler, so take it off before backing up to the trailer."},{"kind":"bullet","text":"Keep the Cylinder Clean: Rinse road salt and grit off the lock, and use graphite or silicone spray if the key starts to stick."}],"sourceId":"m5"}],"storeName":"Grundig-auto","seoDescription":null,"url":"https://grundig-auto.com/products/grundig-trailer-coupler-lock","brand":{"@type":"Brand","name":"Grundig-auto"},"tags":[],"image":["https://cdn.shopify.com/s/files/1/0609/9143/8927/files/1_a15206d5-eb0c-4574-a02f-fdf85aab8327.webp?v=1792655489","https://cdn.shopify.com/s/files/1/0609/9143/8927/files/4_038b5706-bc9c-4df0-9280-fa9381113f47.webp?v=1792655489","https://cdn.shopify.com/s/files/1/0609/9143/8927/files/2_3345d6ae-0b0f-43f5-a9f0-2202639d51c1.webp?v=1792655489","https://cdn.shopify.com/s/files/1/0609/9143/8927/files/6_4f28932e-cdd5-432d-a117-926b3c379a6d.webp?v=1792655489","https://cdn.shopify.com/s/files/1/0609/9143/8927/files/3_6d057fc4-6487-48c8-967f-f876e36f4c8d.webp?v=1792655488","https://cdn.shopify.com/s/files/1/0609/9143/8927/files/5_0477e12c-fcfb-46dc-bfe9-57405e29d723.webp?v=1792655488"],"imageMetadata":[{"url":"https://cdn.shopify.com/s/files/1/0609/9143/8927/files/1_a15206d5-eb0c-4574-a02f-fdf85aab8327.webp?v=1792655489","altText":""},{"url":"https://cdn.shopify.com/s/files/1/0609/9143/8927/files/4_038b5706-bc9c-4df0-9280-fa9381113f47.webp?v=1792655489","altText":""},{"url":"https://cdn.shopify.com/s/files/1/0609/9143/8927/files/2_3345d6ae-0b0f-43f5-a9f0-2202639d51c1.webp?v=1792655489","altText":""},{"url":"https://cdn.shopify.com/s/files/1/0609/9143/8927/files/6_4f28932e-cdd5-432d-a117-926b3c379a6d.webp?v=1792655489","altText":""},{"url":"https://cdn.shopify.com/s/files/1/0609/9143/8927/files/3_6d057fc4-6487-48c8-967f-f876e36f4c8d.webp?v=1792655488","altText":""},{"url":"https://cdn.shopify.com/s/files/1/0609/9143/8927/files/5_0477e12c-fcfb-46dc-bfe9-57405e29d723.webp?v=1792655488","altText":""}],"offers":[{"@type":"Offer","name":"Black","url":"https://grundig-auto.com/apps/arenza/products/grundig-trailer-coupler-lock?view=shop&variant=67835125071951","price":"45.00","priceCurrency":"USD","sku":"Trailer Coupler Lock-Black","availableForPurchase":true,"oneTimePurchase":true,"additionalProperty":[{"@type":"PropertyValue","name":"Available to purchase","value":true},{"@type":"PropertyValue","name":"Option","value":"Black"}],"potentialAction":{"@type":"BuyAction","target":"https://grundig-auto.com/apps/arenza/products/grundig-trailer-coupler-lock?view=buy&variant=67835125071951"}},{"@type":"Offer","name":"Red","url":"https://grundig-auto.com/apps/arenza/products/grundig-trailer-coupler-lock?view=shop&variant=67835125104719","price":"45.00","priceCurrency":"USD","sku":"Trailer Coupler Lock-Red","availableForPurchase":true,"oneTimePurchase":true,"additionalProperty":[{"@type":"PropertyValue","name":"Available to purchase","value":true},{"@type":"PropertyValue","name":"Option","value":"Red"}],"potentialAction":{"@type":"BuyAction","target":"https://grundig-auto.com/apps/arenza/products/grundig-trailer-coupler-lock?view=buy&variant=67835125104719"}},{"@type":"Offer","name":"Yellow","url":"https://grundig-auto.com/apps/arenza/products/grundig-trailer-coupler-lock?view=shop&variant=67835125137487","price":"45.00","priceCurrency":"USD","sku":"Trailer Coupler Lock-Yellow","availableForPurchase":true,"oneTimePurchase":true,"additionalProperty":[{"@type":"PropertyValue","name":"Available to purchase","value":true},{"@type":"PropertyValue","name":"Option","value":"Yellow"}],"potentialAction":{"@type":"BuyAction","target":"https://grundig-auto.com/apps/arenza/products/grundig-trailer-coupler-lock?view=buy&variant=67835125137487"}}],"variantCoverage":{"exposed":3,"total":3,"complete":true},"source":"live_public_shopify_product","illustrative":false,"updatedAt":"2026-10-22T19:59:33Z","checkedAt":"2026-10-22T20:44:13.353Z","buyingConditions":"Currency verified from the anonymous storefront. 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