{"id":302,"date":"2026-11-10T15:00:07","date_gmt":"2026-11-10T20:00:07","guid":{"rendered":"https:\/\/www.masonsautostore.com\/part\/genuine-gm-oxygen-sensor-upstream-right-for-2024-2026-chevrolet-silverado-oem-12721346\/"},"modified":"2026-11-10T16:16:18","modified_gmt":"2026-11-10T21:16:18","slug":"genuine-gm-oxygen-sensor-upstream-right-for-2024-2026-chevrolet-silverado-oem-12721346","status":"publish","type":"product","link":"https:\/\/www.masonsautostore.com\/es\/part\/genuine-gm-oxygen-sensor-upstream-right-for-2024-2026-chevrolet-silverado-oem-12721346\/","title":{"rendered":"Genuine GM Oxygen Sensor, Upstream Right for 2024\u20132026 Chevrolet Silverado (OEM 12721346)"},"content":{"rendered":"<h2>Genuine Oxygen Sensor, Upstream Right for the 2024\u20132026 Chevrolet Silverado<\/h2>\n<p>This is a brand-new, genuine GM oxygen sensor, upstream right with OEM part number <strong>12721346<\/strong>. It is the same part installed at the factory on the Chevrolet Silverado, so it matches the original fit, finish and performance \u2014 no trimming, adapters or guesswork. Mason&#8217;s Auto Store sells it below the manufacturer&#8217;s suggested retail price, ships it across the USA and checks every order against your vehicle before it leaves our Akron, Ohio counter.<\/p>\n<p><strong>Fitment notes from the factory catalog:<\/strong> 6.2L. Upstream. Right.<\/p>\n<h3>Specifications<\/h3>\n<table class=\"spec-table\">\n<tr>\n<th>Part type<\/th>\n<td>Oxygen Sensor, Upstream Right<\/td>\n<\/tr>\n<tr>\n<th>OEM part number<\/th>\n<td>12721346<\/td>\n<\/tr>\n<tr>\n<th>Brand<\/th>\n<td>GM Genuine<\/td>\n<\/tr>\n<tr>\n<th>Condition<\/th>\n<td>New OEM (genuine factory part)<\/td>\n<\/tr>\n<tr>\n<th>Fits<\/th>\n<td>2024\u20132026 Chevrolet Silverado<\/td>\n<\/tr>\n<tr>\n<th>Position<\/th>\n<td>Right (passenger side)<\/td>\n<\/tr>\n<tr>\n<th>Warranty<\/th>\n<td>12 months (manufacturer parts warranty)<\/td>\n<\/tr>\n<\/table>\n<h3>Will it fit my Chevrolet Silverado?<\/h3>\n<p>Trim level, engine, drivetrain and production date can change the correct part number. Use the Shop by Vehicle filter, compare the OEM number 12721346 with your old part, or add your 17-digit VIN at checkout \u2014 we verify fitment for free before shipping. Need several ignition &#038; electrical parts for a shop or fleet? Send a bulk inquiry for one combined quote.<\/p>\n<h3>Why buy from Mason&#8217;s<\/h3>\n<ul>\n<li>Family parts store serving Akron since 1936<\/li>\n<li>Genuine OEM part number shown on every listing<\/li>\n<li>Pay by card, Afterpay, Zelle, Cash App or bank transfer \u2014 ships once payment is confirmed<\/li>\n<li>Optional shipping insurance and 30-day returns on unused parts<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Genuine GM oxygen sensor, upstream right (OEM 12721346). Fits 2024\u20132026 Chevrolet Silverado. New, in original packaging \u2014 42% below MSRP. Free VIN fitment check.<\/p>","protected":false},"featured_media":551,"comment_status":"open","ping_status":"closed","template":"","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":""},"product_brand":[209],"product_cat":[97],"product_tag":[210,108,114],"mas_vehicle":[36,37],"mas_condition":[84],"mas_source":[89],"class_list":["post-302","product","type-product","status-publish","has-post-thumbnail","product_brand-gm-genuine","product_cat-ignition-electrical","product_tag-chevrolet-silverado","product_tag-oem","product_tag-oxygen-sensor","mas_vehicle-chevrolet","mas_vehicle-chevrolet-silverado","mas_condition-oem-new","first","instock","sale","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/product\/302","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/comments?post=302"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/media\/551"}],"wp:attachment":[{"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/media?parent=302"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/product_brand?post=302"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/product_cat?post=302"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/product_tag?post=302"},{"taxonomy":"mas_vehicle","embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/mas_vehicle?post=302"},{"taxonomy":"mas_condition","embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/mas_condition?post=302"},{"taxonomy":"mas_source","embeddable":true,"href":"https:\/\/www.masonsautostore.com\/es\/wp-json\/wp\/v2\/mas_source?post=302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}