{"product_id":"arp-3-8-hex-starter-bolts-for-chevrolet-4-450-long-polished-stainless-pair","title":"ARP 3\/8\" Hex Starter Bolts for Chevrolet — 4.450\" Long Polished Stainless, Pair","description":"\u003cp\u003e\u003cstrong\u003eThese are genuine ARP 4303507 polished stainless 3\/8\" hex starter bolts — a matched pair designed to replace or upgrade the factory starter fasteners on compatible Chevrolet engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need reliable starter mounting hardware that resists corrosion and provides consistent clamp-up, the ARP 4303507 kit delivers two long 4.450-inch hex-head bolts engineered to meet automotive tolerances. Manufactured by ARP (Automotive Racing Products), these stainless starter bolts are a direct-fit option for many Chevrolet applications and make an ideal service replacement or upgrade when accessibility and long-term durability matter.\u003c\/p\u003e\n\n\u003ch3\u003eWill these bolts fit my Chevrolet starter?\u003c\/h3\u003e\n\n\u003cp\u003eThese bolts are specified as 3\/8\" hex starter bolts, 4.450 inches in length, and supplied as a pair for GM starters. They are intended to replace the factory bolts in compatible Chevrolet starters but always confirm part compatibility with your vehicle year and starter model before ordering.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThread size: 3\/8\" (standard hex head configuration).\u003c\/li\u003e\n  \u003cli\u003eLength: 4.450 inches — suitable for deeper starter housings.\u003c\/li\u003e\n  \u003cli\u003eFinish: polished stainless for corrosion resistance and clean appearance.\u003c\/li\u003e\n  \u003cli\u003ePack: sold as a pair, part number 4303507 for cross-reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the ARP stainless construction help over stock bolts?\u003c\/h3\u003e\n\n\u003cp\u003eStainless steel resists rust and surface degradation, which is especially helpful where moisture and road salts are present. The polished finish reduces galling and helps preserve threads, offering longer service life compared with many plain steel replacements.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCorrosion resistance keeps threads serviceable when exposed to humidity or salt.\u003c\/li\u003e\n  \u003cli\u003ePolished surface reduces the chance of seizing and eases removal.\u003c\/li\u003e\n  \u003cli\u003eStiffer material tolerance improves clamp integrity under load cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat tools and torque considerations should I use?\u003c\/h3\u003e\n\n\u003cp\u003eUse a properly sized hex socket or wrench to avoid rounding the head; ARP fasteners are typically tightened to manufacturer-recommended torque values. If replacing factory hardware, follow the starter and vehicle service manual torque specs to ensure correct clamp and to prevent distortion of mating surfaces.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTool: 3\/8\" hex socket or matching hex wrench for secure engagement.\u003c\/li\u003e\n  \u003cli\u003eTorque: follow vehicle\/starter manual — use a calibrated torque wrench for accuracy.\u003c\/li\u003e\n  \u003cli\u003eInstallation tip: thread lubricant or anti-seize only if specified by ARP or the vehicle manual.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the package and what are the physical specs?\u003c\/h3\u003e\n\n\u003cp\u003eThis listing is for a brand new, genuine ARP MPN 4303507 starter bolt pair packaged for retail. The bolts are polished stainless steel, hex head style, and sized to serve GM starter applications requiring 4.450-inch length fasteners.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eContents: two (2) starter bolts — sold as a pair.\u003c\/li\u003e\n  \u003cli\u003ePart number: 4303507 (ARP genuine OEM number).\u003c\/li\u003e\n  \u003cli\u003ePackage weight: approximately 0.35 pounds; dimensions: 23.876 x 2.032 x 14.732 cm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This ARP starter bolt kit is ideal for Chevrolet owners, mechanics, and restorers who want a durable, corrosion-resistant replacement for worn or corroded starter bolts. It's also a good choice for performance-minded technicians who prefer precision-made fasteners with a polished appearance for engine-bay presentation. If you need a direct-fit, long-length 3\/8\" hex starter bolt with proven build quality, this ARP pair is engineered for that purpose.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these ARP bolts compatible with all Chevrolet starters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit many Chevrolet starters that use 3\/8\" hex bolts and require 4.450\" length; verify compatibility with your vehicle and starter model first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these bolts include nuts or washers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the kit includes two polished stainless starter bolts only; nuts or washers are not included.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":48084759707806,"sku":"B003XUDUCO","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/arp-starter-bolt-front.jpg?v=1785862054","url":"https:\/\/northtrailauto.ca\/products\/arp-3-8-hex-starter-bolts-for-chevrolet-4-450-long-polished-stainless-pair","provider":"North Trail Auto","version":"1.0","type":"link"}