{"title":"Cylinder Heads","description":"\u003cp\u003eEvery cylinder heads listing at Second Truck Parts is identified by brand and manufacturer part number, with its condition — new, remanufactured, or used — stated right on the listing. Part of our engine \u0026amp; internal components range. Most parts carry our 90-day warranty, returns are accepted for 30 days with an RA number, and our team verifies fitment free before you buy: send your VIN or engine serial and we confirm it fits.\u003c\/p\u003e\u003cp\u003eDon't see the exact part? Call \u003cstrong\u003e(877) 898-0737\u003c\/strong\u003e (Mon–Fri 8 AM–8 PM ET) or \u003ca href=\"\/pages\/request-a-quote\"\u003erequest a quote\u003c\/a\u003e — much of our inventory comes off salvage trucks in our own yard and may not be listed yet.\u003c\/p\u003e","products":[{"product_id":"a4720940441-detroit-diesel-cylinder-head-support-bracket","title":"Genuine Detroit Diesel Cylinder Head Support Bracket","description":"\u003cdiv class=\"std\"\u003e\n\u003ctable class=\"part-details\" style=\"width:100%; border-collapse:collapse; border:1px solid #000;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003eCylinder Head Support Bracket For \u003cspan\u003eDD16 EPA10\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003e\u003cstrong\u003eCONDITION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003eUsed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003e\u003cstrong\u003eBRAND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003eDetroit Diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003e\u003cstrong\u003ePART NUMBER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003eA4720940441\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003e\u003cstrong\u003ePART NUMBERS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #000; padding:4px 6px;\"\u003eA4720940441; DDE A4720940441, DDEA4720940441, 4720940441, DDE A4720940141\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eFunction of this part\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eThis component is part of the heavy-duty truck chassis or engine system and is designed for the loads and duty cycles found in commercial service. It is built to work with OEM mounting points and connections for the specified application.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eWhy this part matters\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eChoosing a correct OEM-style part helps avoid fitment issues and keeps the truck operating as the manufacturer intended. A good used part can restore function quickly while keeping repair costs under control.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eAbout the brand\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eDetroit Diesel engine and drivetrain components are widely used in modern highway tractors for their balance of power, efficiency, and service support.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eFitment \u0026amp; usage\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\n\u003cp\u003eUsed OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Detroit Diesel","offers":[{"title":"Default Title","offer_id":43133795205167,"sku":"A4720940441","price":57.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/7871\/3135\/files\/IMG_0060-Photoroom.jpg?v=1737592766"},{"product_id":"11301215-genuine-detroit-diesel-cylinder-head","title":"Genuine Detroit Diesel Air Compressor Cylinder Head","description":"\u003cdiv class=\"std\"\u003e\n\u003ctable class=\"part-details\" style=\"width: 100%; border-collapse: collapse; border: 1px solid #000;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003eAir Compressor Cylinder Head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e\u003cstrong\u003eCONDITION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003eUsed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e\u003cstrong\u003eBRAND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003eDetroit Diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e\u003cstrong\u003ePART NUMBER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e11301215\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e\u003cstrong\u003ePART NUMBERS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e11301215; 11301215, 4123529222, 0011305219, 0011301215, 0011302615, A0011301215\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eFunction of this part\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eThis component is part of the heavy-duty truck chassis or engine system and is designed for the loads and duty cycles found in commercial service. It is built to work with OEM mounting points and connections for the specified application.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eWhy this part matters\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eChoosing a correct OEM-style part helps avoid fitment issues and keeps the truck operating as the manufacturer intended. A good used part can restore function quickly while keeping repair costs under control.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eAbout the brand\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eDetroit Diesel engine and drivetrain components are widely used in modern highway tractors for their balance of power, efficiency, and service support.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eFitment \u0026amp; usage\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\n\u003cp\u003eUsed OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Detroit Diesel","offers":[{"title":"Default Title","offer_id":43158339387439,"sku":"11301215","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/7871\/3135\/files\/IMG_1970-Photoroom.jpg?v=1737595634"},{"product_id":"257-2169-genuine-cat-engine-cylinder-head","title":"Genuine Cat Engine Cylinder Head","description":"\u003cdiv class=\"std\"\u003e\n\u003ctable style=\"width: 100.008%; border-collapse: collapse; border: 1px solid rgb(0, 0, 0); height: 97.947px;\" class=\"part-details\"\u003e\u003ctbody\u003e\n\u003ctr style=\"height: 19.5894px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 69.1413%; height: 19.5894px;\"\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 30.8285%; height: 19.5894px;\"\u003eEngine Cylinder Head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5894px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 69.1413%; height: 19.5894px;\"\u003e\u003cstrong\u003eCONDITION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 30.8285%; height: 19.5894px;\"\u003eUsed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5894px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 69.1413%; height: 19.5894px;\"\u003e\u003cstrong\u003eBRAND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 30.8285%; height: 19.5894px;\"\u003eCat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5894px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 69.1413%; height: 19.5894px;\"\u003e\u003cstrong\u003ePART NUMBER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 30.8285%; height: 19.5894px;\"\u003e257-2169\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5894px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 69.1413%; height: 19.5894px;\"\u003e\u003cstrong\u003ePART NUMBERS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 30.8285%; height: 19.5894px;\"\u003e257-2169\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eFunction of this part\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eThis component is part of the heavy-duty truck chassis or engine system and is designed for the loads and duty cycles found in commercial service. It is built to work with OEM mounting points and connections for the specified application.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eWhy this part matters\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eChoosing a correct OEM-style part helps avoid fitment issues and keeps the truck operating as the manufacturer intended. A good used part can restore function quickly while keeping repair costs under control.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eAbout the brand\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\u003cp\u003eCat components are commonly used in commercial truck and equipment applications where dependable performance and proper fit are important.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin: 10px 0; border: 1px solid #e5e5e5; border-radius: 4px; padding: 9px 11px;\"\u003e\u003csummary style=\"cursor: pointer; font-size: 16px; line-height: 1.25; font-weight: 600;\"\u003eFitment \u0026amp; usage\u003c\/summary\u003e\u003cdiv style=\"margin-top: 8px; font-size: 14px; line-height: 1.5;\"\u003e\n\u003cp\u003eUsed OEM parts are a smart choice for controlling repair costs while still using original-equipment components. 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Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Cat","offers":[{"title":"Default Title","offer_id":43455336218671,"sku":"257-2169","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/7871\/3135\/files\/IMG_9690-Photoroom_63615491-74ee-45ac-80d4-d273084e0528.jpg?v=1737607051"},{"product_id":"307","title":"Genuine Detroit Diesel Engine Cylinder Head DD15 GHG21","description":"\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid rgb(0, 0, 0); height: 117.614px;\" class=\"part-details\"\u003e\u003ctbody\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 50.4866%;\"\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 49.4778%;\"\u003eEngine Cylinder Head DD15 GHG21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 50.4866%;\"\u003e\u003cstrong\u003eCONDITION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 49.4778%;\"\u003eUsed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 50.4866%;\"\u003e\u003cstrong\u003eBRAND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 49.4778%;\"\u003eDetroit Diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6023px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 50.4866%;\"\u003e\u003cstrong\u003ePART NUMBER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; height: 19.6023px; width: 49.4778%;\"\u003eA4730104620\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 50.4866%; height: 39.2045px;\"\u003e\u003cstrong\u003ePART NUMBERS\u003cbr\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 4px 6px; width: 49.4778%; height: 39.2045px;\"\u003eDDE EA4730104620, DDEEA4730104620, EA4730104620, 47312, 473 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003e\u003cstrong\u003ePART NUMBERS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 4px 6px;\"\u003eA4730104620; DDE EA4730104620, DDEEA4730104620, EA4730104620, 47312, 473 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Detroit Diesel","offers":[{"title":"Default Title","offer_id":44896584892463,"sku":"A4730104620","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/7871\/3135\/files\/Screenshot_115_f40eb995-d908-465d-9403-5ba11ea848e2.png?v=1773770524"}],"url":"https:\/\/secondtruckparts.com\/collections\/cylinder-heads\/brand-freightliner.oembed","provider":"Second Truck Parts","version":"1.0","type":"link"}