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SPEED FACTORY RACING SpeedFactory Racing 4140 Head Stud Kit for Honda/Acura B & K Series Engines

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SpeedFactory Racing 4140 Head Stud Kit for Honda/Acura B & K Series (B Series VTEC engines - B16A, B18C1, B18C5, B20VTEC, LSVTEC, K20, K24)


The SpeedFactory Racing 4140 Head Stud Kit is great for most forced induction applications up to 800+HP and includes oversized forged nuts & washers for superior load distribution. A hex broach is incorporated on the top of the stud for ease of installation and a dog point end seats the stud in the block and preloads the fastener for consistent & accurate torqing.



  • 210,000 psi tensile rating

  • Hex broach on the top of the stud for ease of installation

  • Dog point design for superior preload

  • Oversized forged 9/16” 12-point nuts and hardened parallel ground washers for superior load distribution compared to the smaller 1/2” nuts and washers most use

  • Direct drop-in replacement for OEM head bolts.

  • Corrosion-resistant black oxide coating

  • Each kit includes a complete set of 4140 head studs, nuts, washers and ARP Ultra-Torque Assembly Lubricant.

  • DOES NOT FIT: K24Z7, FULL B18A/B (NO VTEC HEAD)


Keywords: ARP GSR HEADSTUD HEADSTUD LSVTEC LS/VTEC STUDS


USD : 71.2

WASHING INSTRUCTIONS:

Machine wash separately in cold water on a gentle cycle. Tumble dry separately on low heat. Add QE Home Wool Dryer Balls to reduce wrinkles and increases drying efficiency. Touch up with a low heat iron as needed. Do not bleach or dry clean.

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