{"product_id":"caterpillar-157-3491-heavy-duty-engine-block","title":"Caterpillar 157-3491 Heavy Duty Engine Block","description":"\u003cdiv\u003eThe Caterpillar 157-3491 Heavy Duty Engine Block is a Caterpillar engine-block component identified by part number 157-3491. As the core housing of an internal combustion engine, the block provides the cylindrical cavities for pistons and serves as the mounting foundation for the crankshaft, camshaft, and cylinder heads in the engine assembly. Described as heavy-duty, this block is built to withstand the higher stresses and wear typical of demanding service environments where durability and reliability are critical. The part’s brand and number help technicians and buyers verify fit, simplify ordering, and maintain accurate maintenance records within Caterpillar-compatible engine systems. Because this is a dedicated Caterpillar block, it is designed to align with Caterpillar engineering standards and compatible engine configurations that require the 157-3491 designation. In practical use, replacing a worn or damaged block with the correct Caterpillar part supports restoring engine integrity, maintaining proper bore alignment, and providing solid support for attached components over the engine’s service life.\u003c\/div\u003e","brand":"CAT","offers":[{"title":"New","offer_id":51677804003630,"sku":null,"price":319.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_df5a3b70-0645-4368-8df7-e2e559c987c6.jpg?v=1769567951","url":"https:\/\/plgautomation.com\/products\/caterpillar-157-3491-heavy-duty-engine-block","provider":"PLG Automation ","version":"1.0","type":"link"}