Speedfactory 4140 head bolts / head studs (B18C/B16B/K20/K24 engines)
90% of the products in our store are in internal or external stock and we can often process your order quickly (varying from a few hours to a number of business days).
Naturally it is possible that a product has an (unexpected) longer delivery time.
Upon receipt of your order, we will always inform you about this and offer any available alternatives. So keep a close eye on your mailbox.
We deliberately provide stock information about our products afterwards, because many suppliers do not offer a ''stock link system'' and we do not want to show '' estimates '' in advance, like many other webshops do (which are often incorrect and give you wrong information in advance). We only want to give our customers actual information on the moment of processing the order so we don't mislead our customers.
If you need a product VERY quickly and you need to be sure that we have it in stock, please e-mail or call us or send a message via ''ask a question about this product'' below in the product description.
SpeedFactory Racing 4140 Head Stud Kit for Honda/Acura B & K Series (B Series VTEC engines - B18C1, B18C5, B20VTEC, LSVTEC, K20, K24)
The SpeedFactory Racing 4140 Head Stud Kit is great for most boosted applications 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 torquing.
- 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), or B16A
