ARP 430-3511 LS Starter Bolt Kit, Stainless, 12-Point, M10 x 4.470 in.
$16.91
A pair of long ARP stainless steel starter bolts for GM LS engines, with compact 12-point heads and a 4.470 in. under-head length. Made in the USA.
- Fits: GM LS-series starters that mount with two long bolts
- Kit: 2 long M10 bolts, 4.470 in. under-head length (per ARP package label)
- 12-point heads: Smaller heads make the bolts easier to reach in a tight starter area
- Stainless steel: Polished stainless that resists rust and corrosion
- Made in the USA: By ARP (Automotive Racing Products) in California
Amazon price as of Oct 10, 2026, subject to change. Check Amazon for the current price. Checkout is completed on Amazon, not through Planet X Performance.
ARP’s 430-3511 kit swaps the starter mounting bolts on a GM LS engine for a pair of long stainless steel bolts. The 12-point heads are smaller than a standard hex head, which helps when headers, motor plates or the oil pan crowd the starter. Each bolt has a knurled section on the shank, and the under-head length is 4.470 in. (about 113.5 mm), sized for starters that use two long bolts. ARP makes the kit in the USA.
Key specs
| Brand / part number | ARP 430-3511 |
|---|---|
| Quantity | 2 bolts (per ARP package label) |
| Thread | M10 metric |
| Under-head length | 4.470 in. (about 113.5 mm) |
| Head | 12-point |
| Material | Stainless steel |
| Made in | USA |
Fits
- Engines: GM LS-series engines (ARP lists Chevrolet LS series) with a starter that uses two long mounting bolts
In the box: (2) starter bolts. Bolts only, no starter.
Check before you buy
- Starter type: For starters that mount with two long bolts. Starters with a thick billet mounting block can need longer bolts (JEGS 10042, for example, uses 4.750 in. bolts), so check your starter’s instructions
- Length: 4.470 in. is measured under the head. Compare it with the bolts your starter maker specifies
- Torque: ARP has no instruction sheet for this kit. Use your starter maker’s torque spec
Broken starter ear? If the outboard starter mounting ear on your LS block is cracked or broken, the Trinity Starter Bracket can repair it without machining. The block’s inboard starter bolt hole must still be intact. The Trinity can’t fix a block where the whole starter ear is missing.
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