{"product_id":"stihl-18-inch-chainsaw-guide-bar-3003-812-6817","title":"STIHL 18 Inch Chainsaw Bar Guide Bar Part 3003 812 6817 | OEM Replacement Part","description":"\u003cdiv style=\"font-family: Arial, sans-serif; max-width: 800px; margin: 0 auto; color: #1a2332;\"\u003e\n\n\u003c!-- HERO BANNER --\u003e\n\u003cdiv style=\"background: #f47216; border-radius: 8px; padding: 30px; display: flex; flex-direction: row; align-items: center; gap: 24px; margin-bottom: 16px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0245\/2416\/1070\/files\/Stihl_Logo.png?v=1777133752\" alt=\"STIHL Logo\" style=\"max-height: 80px; max-width: 200px; object-fit: contain;\"\u003e\n  \u003cdiv style=\"color: #ffffff; font-size: 24px; font-weight: 700; line-height: 1.3;\"\u003e18\" Chainsaw Guide Bar\u003cbr\u003e\u003cspan style=\"font-size: 16px; font-weight: 400; opacity: 0.9;\"\u003ePart No. 3003 812 6817\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- PRODUCT HEADLINE --\u003e\n\u003cdiv style=\"background: #ffffff; padding: 24px; border-radius: 8px; text-align: center; margin-bottom: 16px;\"\u003e\n  \u003cdiv style=\"font-size: 24px; font-weight: 700; color: #1a2332;\"\u003eSTIHL 3003 812 6817 — 18\" Chainsaw Guide Bar\u003c\/div\u003e\n  \u003cdiv style=\"font-size: 15px; color: #6b7280; margin-top: 8px;\"\u003eAlso known as: STIHL 18-inch bar, 18\" guide bar, bar ST, STIHL chainsaw bar replacement\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- SHIPPING CALLOUT --\u003e\n\u003cdiv style=\"background: #16a34a; color: #ffffff; font-weight: 700; font-size: 14px; text-align: center; padding: 14px; border-radius: 6px; margin-bottom: 16px;\"\u003e\n  🚚 Orders Before 2PM Ship Same Day!\n\u003c\/div\u003e\n\n\u003c!-- TRUST SIGNAL ROW --\u003e\n\u003cdiv style=\"background: #f9fafb; color: #1a2332; font-size: 14px; font-weight: 700; text-align: center; padding: 16px; border-radius: 6px; letter-spacing: 1px; margin-bottom: 16px;\"\u003e\n  GENUINE OEM   ·   SAME-DAY SHIP   ·   EXPERT SUPPORT\n\u003c\/div\u003e\n\n\u003c!-- SPECIFICATIONS --\u003e\n\u003cdiv style=\"background: #f0fdfa; padding: 20px; border-radius: 6px; margin-bottom: 16px;\"\u003e\n  \u003cdiv style=\"font-size: 18px; font-weight: 700; color: #1a2332; margin-bottom: 4px;\"\u003eSpecifications\u003c\/div\u003e\n  \u003cdiv style=\"border-bottom: 3px solid #f47216; width: 60px; margin-bottom: 16px;\"\u003e\u003c\/div\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; background: #ffffff; border-radius: 6px; overflow: hidden;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background: #1a2332; color: #ffffff;\"\u003e\n        \u003cth style=\"padding: 12px 16px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eSpecification\u003c\/th\u003e\n        \u003cth style=\"padding: 12px 16px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eDetail\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background: #ffffff;\"\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px; font-weight: 600;\"\u003ePart Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px;\"\u003e3003 812 6817\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f9fafb;\"\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px; font-weight: 600;\"\u003eBrand\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px;\"\u003eSTIHL\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #ffffff;\"\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px; font-weight: 600;\"\u003eBar Length\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px;\"\u003e18 Inches (45 cm)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f9fafb;\"\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px; font-weight: 600;\"\u003ePart Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px;\"\u003eChainsaw Guide Bar (Bar ST)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #ffffff;\"\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px; font-weight: 600;\"\u003eOEM \/ Aftermarket\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px 16px; border: 1px solid #e5e7eb; font-size: 14px;\"\u003eGenuine OEM STIHL\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003c!-- INTRO PARAGRAPH --\u003e\n\u003cdiv style=\"background: #fffbeb; padding: 20px; border-radius: 6px; margin-bottom: 16px; font-size: 15px; line-height: 1.7; color: #1a2332;\"\u003e\n  The \u003cstrong style=\"color: #f47216;\"\u003eSTIHL 3003 812 6817\u003c\/strong\u003e is a genuine OEM \u003cstrong style=\"color: #f47216;\"\u003eSTIHL\u003c\/strong\u003e 18-inch chainsaw guide bar designed to guide and support the cutting chain during operation. Also referred to as an 18\" bar, bar ST, or chainsaw sword, this guide bar is a direct-fit replacement part for compatible STIHL chainsaw models. It maintains the precise tolerances required for safe, efficient cutting performance in both professional and homeowner applications.\n\u003c\/div\u003e\n\n\u003c!-- ACCORDION 1: KEY FEATURES --\u003e\n\u003cdetails style=\"background: white; border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\"\u003e\n  \u003csummary style=\"cursor: pointer; padding: 16px 20px; background: #f9fafb; font-weight: 700; font-size: 16px; color: #1a2332; list-style: none; display: flex; justify-content: space-between; align-items: center; border-left: 4px solid #f47216;\"\u003e\n    Key Features\u003cspan style=\"font-size: 14px; color: #6b7280;\"\u003e▼\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 20px; background: #f1f5f9;\"\u003e\n    \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 16px;\"\u003e\n\n      \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 20px; border-top: 4px solid #f47216;\"\u003e\n        \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 8px;\"\u003e18-Inch Bar Length for Mid-Range Cutting\u003c\/div\u003e\n        \u003cdiv style=\"font-size: 14px; color: #374151; line-height: 1.6;\"\u003eThe 18-inch (45 cm) cutting length of part 3003 812 6817 is ideal for felling small to medium trees, limbing, and bucking firewood. This bar length offers a balance of maneuverability and reach for common chainsaw tasks.\u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 20px; border-top: 4px solid #f47216;\"\u003e\n        \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 8px;\"\u003eSTIHL OEM Replacement Guide Bar\u003c\/div\u003e\n        \u003cdiv style=\"font-size: 14px; color: #374151; line-height: 1.6;\"\u003eAs a genuine OEM STIHL part, 3003 812 6817 is manufactured to the exact factory specifications required for safe chainsaw operation. OEM bars ensure proper chain tension, correct gauge fit, and factory-tested durability.\u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 20px; border-top: 4px solid #f47216;\"\u003e\n        \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 8px;\"\u003eDirect Cross-Reference for STIHL Bar Replacement\u003c\/div\u003e\n        \u003cdiv style=\"font-size: 14px; color: #374151; line-height: 1.6;\"\u003eSTIHL part number 3003 812 6817 cross-references to the Bar ST designation used across several STIHL chainsaw lineups. Always verify chain gauge, pitch, and drive link count when ordering a replacement guide bar.\u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 20px; border-top: 4px solid #f47216;\"\u003e\n        \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 8px;\"\u003eCompatible with Multiple STIHL Chainsaw Models\u003c\/div\u003e\n        \u003cdiv style=\"font-size: 14px; color: #374151; line-height: 1.6;\"\u003eThis 18-inch STIHL guide bar is designed to fit a range of STIHL gas-powered chainsaws that accept an 18\" bar. Confirm compatibility using your saw's model number and bar mounting specifications before installation.\u003c\/div\u003e\n      \u003c\/div\u003e\n\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- ACCORDION 2: COMPATIBLE EQUIPMENT --\u003e\n\u003cdetails style=\"background: white; border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\"\u003e\n  \u003csummary style=\"cursor: pointer; padding: 16px 20px; background: #f9fafb; font-weight: 700; font-size: 16px; color: #1a2332; list-style: none; display: flex; justify-content: space-between; align-items: center; border-left: 4px solid #f47216;\"\u003e\n    Compatible Equipment\u003cspan style=\"font-size: 14px; color: #6b7280;\"\u003e▼\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 20px;\"\u003e\n    \u003cp style=\"font-size: 14px; color: #374151; line-height: 1.7; margin-bottom: 12px;\"\u003eSTIHL part \u003cstrong\u003e3003 812 6817\u003c\/strong\u003e is an 18-inch guide bar compatible with select STIHL chainsaws that accept this bar length and mounting style. Typical compatible models using the STIHL 18\" bar include the MS 251, MS 271, MS 291, MS 311, and MS 391, among others — always verify with your saw's documentation.\u003c\/p\u003e\n    \u003cul style=\"font-size: 14px; color: #374151; line-height: 1.9; padding-left: 20px;\"\u003e\n      \u003cli\u003eSTIHL MS 251\u003c\/li\u003e\n      \u003cli\u003eSTIHL MS 271\u003c\/li\u003e\n      \u003cli\u003eSTIHL MS 291\u003c\/li\u003e\n      \u003cli\u003eSTIHL MS 311\u003c\/li\u003e\n      \u003cli\u003eSTIHL MS 391\u003c\/li\u003e\n      \u003cli\u003eOther STIHL models accepting an 18\" guide bar — confirm with model documentation\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- ACCORDION 3: COMMON QUESTIONS --\u003e\n\u003cdetails style=\"background: white; border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\"\u003e\n  \u003csummary style=\"cursor: pointer; padding: 16px 20px; background: #f9fafb; font-weight: 700; font-size: 16px; color: #1a2332; list-style: none; display: flex; justify-content: space-between; align-items: center; border-left: 4px solid #f47216;\"\u003e\n    Common Questions\u003cspan style=\"font-size: 14px; color: #6b7280;\"\u003e▼\u003c\/span\u003e\n  \u003c\/summary\u003e\n  \u003cdiv style=\"padding: 20px;\"\u003e\n\n    \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 16px; margin-bottom: 12px;\"\u003e\n      \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 6px;\"\u003eQ: What chainsaw models fit the STIHL 18 inch guide bar 3003 812 6817?\u003c\/div\u003e\n      \u003cdiv style=\"font-size: 14px; color: #6b7280; line-height: 1.6;\"\u003eA: STIHL part 3003 812 6817 is designed to fit compatible STIHL chainsaws that accept an 18-inch guide bar, including commonly the MS 251, MS 271, MS 291, MS 311, and MS 391. Always cross-check your model's bar specifications before purchasing.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 16px; margin-bottom: 12px;\"\u003e\n      \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 6px;\"\u003eQ: Is STIHL part 3003 812 6817 a genuine OEM bar or aftermarket?\u003c\/div\u003e\n      \u003cdiv style=\"font-size: 14px; color: #6b7280; line-height: 1.6;\"\u003eA: Yes, STIHL 3003 812 6817 is a genuine OEM part manufactured by STIHL to factory specifications. It is not an aftermarket or third-party bar, ensuring correct fit, gauge, and safety performance.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 16px; margin-bottom: 12px;\"\u003e\n      \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 6px;\"\u003eQ: What does Bar ST mean on a STIHL chainsaw guide bar?\u003c\/div\u003e\n      \u003cdiv style=\"font-size: 14px; color: #6b7280; line-height: 1.6;\"\u003eA: Bar ST is STIHL's designation for a specific style of chainsaw guide bar in their product lineup. The Bar ST series, including part 3003 812 6817, refers to the bar type and nose profile used across compatible STIHL chainsaw models.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 16px; margin-bottom: 12px;\"\u003e\n      \u003cdiv style=\"font-size: 15px; font-weight: 700; color: #1a2332; margin-bottom: 6px;\"\u003eQ: How do I know when to replace my STIHL chainsaw guide bar?\u003c\/div\u003e\n      \u003cdiv style=\"font-size: 14px; color: #6b7280; line-height: 1.6;\"\u003eA: Replace your STIHL guide bar, such as part 3003 812 6817, when you notice uneven wear on the rail grooves, bar bending or warping, chain derailment, or difficulty maintaining proper chain tension. Replacing a worn bar ensures safe and efficient cutting performance.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c!-- CLOSING TRUST BAR --\u003e\n\u003cdiv style=\"background: #1a2332; color: #ffffff; padding: 18px; border-radius: 6px; text-align: center; margin-top: 16px;\"\u003e\n  \u003cdiv style=\"font-weight: 700; font-size: 16px; letter-spacing: 1px;\"\u003eGenuine OEM Quality   ·   Same-Day Shipping   ·   Expert Support\u003c\/div\u003e\n  \u003cdiv style=\"font-size: 15px; color: #ffffff; margin-top: 8px; opacity: 0.85;\"\u003eServing equipment owners and professionals with genuine parts you can count on.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Stihl","offers":[{"title":"Default Title","offer_id":42307616047150,"sku":null,"price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0245\/2416\/1070\/files\/STIHL_18-inch_chainsaw_guide_bar_for_professional_and_homeowner_use_with_STIHL_part_number_3003_812_6817.webp?v=1777397225","url":"https:\/\/www.peachcountrytractor.com\/products\/stihl-18-inch-chainsaw-guide-bar-3003-812-6817","provider":"Peach Country Tractor","version":"1.0","type":"link"}