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Automotive replacement engine knurled head bolts: top picks

AI-shortlisted picks, with current prices and ratings.

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Automotive replacement engine knurled head bolts: top picks

AI-generated summary · updated September 10, 2026 · verify details before purchase.

  1. ARP 2000 Series 5/8"-16 x 3/8" Knurled Head Bolt (Stainless Steel)
    Best overall ARP

    ARP 2000 Series 5/8"-16 x 3/8" Knurled Head Bolt (Stainless Steel)

    4.7/5 $17.99

    High-strength stainless steel bolt with a knurled head for easy torque and secure fit on most V8 engines.

    • Tensile strength 125,000 psi
    • Corrosion resistant
    • Knurled head for grip
    • Higher price
    View on Amazon manufacturer site
  2. Fel-Pro Engine Knurled Head Bolt Kit, 6 pcs
    Best budget pick Fel-Pro

    Fel-Pro Engine Knurled Head Bolt Kit, 6 pcs

    4.6/5 $26.17

    Economical steel bolts with a knurled head, designed for replacement on GM and Ford small block engines.

    • Cost effective
    • Easy installation
    • Good fit
    • Standard steel, less corrosion protection
    View on Amazon manufacturer site
  3. Best for high-performance builds

    Fastenal Heavy-Duty Knurled Head Bolt, 5/16"-18 x 1"

    4.5/5 $8-$11 (pack of 10)

    Heavy-duty carbon steel bolt with a knurled head, ideal for high-rpm engine applications.

    • High tensile strength
    • Durable finish
    • Knurled head
    • No stainless option
    View on Amazon
  4. Best for small displacement engines

    GMB 2.0mm Knurled Head Bolt, 12 pcs

    4.3/5 $9-$12 (12 pcs)

    Precision-machined knurled head bolts for compact engine builds, offering reliable torque transfer.

    • Precision machined
    • Compact size
    • Good value
    • Not for large bore engines
    View on Amazon
  5. Dorman 110-064 Knurled Head Bolt, 1/2"-13 x 1.5"
    Best single-item purchase Dorman

    Dorman 110-064 Knurled Head Bolt, 1/2"-13 x 1.5"

    4.2/5 $48.45 Only 15 left

    A single-unit knurled head bolt from Dorman, suitable for quick replacements on many American V8s.

    • Single item purchase
    • Solid steel
    • Easy replace
    • No pack discount
    View on Amazon manufacturer site
  6. Motorcraft Premium Knurled Head Bolt, 5/8"-16 x 2" (Stainless)
    Best for OEM fitment Motorcraft

    Motorcraft Premium Knurled Head Bolt, 5/8"-16 x 2" (Stainless)

    4.5/5 $27.54 Only 1 left

    OEM-spec stainless steel bolt with a knurled head, matching Ford engine specifications for perfect fit.

    • OEM spec
    • Stainless steel
    • Knurled head
    • Higher cost per bolt
    View on Amazon manufacturer site
  7. JEGS Performance Knurled Head Bolt, 1/2"-13 x 1" (Stainless)
    Best for corrosion resistance JEGS

    JEGS Performance Knurled Head Bolt, 1/2"-13 x 1" (Stainless)

    4.4/5 $33.76 Currently unavailable

    Stainless steel bolt with a knurled head, engineered for long-lasting performance in marine and hot-engine environments.

    • Stainless steel
    • Excellent corrosion resistance
    • Knurled grip
    • Limited pack size
    View on Amazon manufacturer site

What to consider before buying

When choosing knurled head bolts, prioritize material (stainless steel for corrosion resistance, carbon steel for strength), bolt size compatibility with your engine, and pack size that matches your repair scope. High-tensile options are ideal for performance builds, while budget kits work well for standard replacements. Verify the thread pitch and length against your service manual to ensure proper fit.

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