ARP Starter Bolt Kit — 10mm 12-Point Starter Bolts, Stainless Steel 4.470 UHL

ARP 430-3511 Starter Bolt Kit is a set of stainless-steel 12-point 10mm starter bolts engineered as durable, corrosion-resistant fasteners for securing automotive starters.

Whether you're rebuilding an engine, replacing a worn starter, or assembling a race-prepped driveline, the ARP 430-3511 kit offers purpose-built hardware designed to meet the demands of high-performance and OEM applications. ARP is known for supplying premium fasteners used across racing series and factory rebuilds; this kit brings that same engineering to the starter mounting hardware, with stainless construction and precise sizing for reliable fitment.

What exactly comes in the ARP 430-3511 Starter Bolt Kit?

The kit contains multiple stainless-steel starter bolts configured as 12-point 10mm fasteners with a 4.470 UHL thread specification. These bolts are intended to replace factory hardware with parts engineered for strength and corrosion resistance. ARP packs them ready for installation so you can swap bolts without searching for individual fasteners.

• Material: corrosion-resistant stainless steel
• Head style: 12-point for high-torque, space-saving engagement
• Size: 10mm nominal diameter with 4.470 UHL thread detail
• Packaged for easy identification and storage

How do these bolts perform compared with factory starter fasteners?

ARP fasteners are manufactured to tighter tolerances and often use higher-grade material than many OEM parts, giving improved longevity and consistent torque retention. The stainless-steel construction reduces the chance of rust and seizing in harsh under-hood environments. For applications that see repeated service or elevated thermal cycling, these bolts help maintain secure starter attachment over time.

• Better corrosion resistance than common zinc-plated bolts
• Tighter dimensional control for repeatable torque specs
• 12-point head fits into compact spaces where sockets must engage from varied angles
• Suitable where durability and serviceability are priorities

Will the ARP 430-3511 kit fit my vehicle's starter?

Fitment depends on your starter stud layout and the 10mm/4.470 UHL thread standard used by your application. This kit is intended as a direct-style replacement when the original hardware matches these dimensions. Always verify thread profile and bolt length against the starter or service manual before installation to ensure compatibility.

• Confirm 10mm thread and 4.470 UHL spec on your existing bolts
• Check starter flange thickness to ensure proper engagement
• Compare head drive type—12-point socket required for installation
• If unsure, consult ARP part charts or a service manual

How should these bolts be installed and torqued?

Install ARP stainless bolts following the starter manufacturer’s torque recommendations when available; ARP parts perform best when tightened to the specified torque with proper lubrication on threads if instructed. Use a 12-point socket that seats fully on the head, and tighten in a progressive pattern if multiple bolts secure the starter. Re-check torque after initial heat cycles or service intervals.

• Use a correctly sized 12-point socket to avoid rounding
• Follow starter or vehicle torque specs; do not exceed recommended values
• Apply thread lubricant only if indicated in instructions
• Retorque after a few heat cycles or scheduled maintenance

Who this is for: The ARP 430-3511 Starter Bolt Kit is aimed at mechanics, performance builders, and DIY enthusiasts who want durable, corrosion-resistant starter mounting hardware. It's a good choice for restorations, race cars, marine applications, and any project where repeatable fitment and long-term reliability matter. If you need high-quality replacement bolts that meet racing-grade standards and are sourced from a U.S. manufacturer, this kit delivers the basics: stainless construction, precise sizing, and ARP engineering pedigree.

Product details and packaging:

• Material: Stainless Steel for long-term corrosion protection
• Package dimensions: 24.1 H x 1.9 L x 14.6 W centimetres
• Package weight: 0.181 kilograms
• Made in the United States