ARP
ARP SB Chevy 12pt Header Bolt Kit
* Images may be a representation and may not reflect the actual product.
Product Details
ARP SB Chevy 12pt Header Bolt Kit
ARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application. What’s more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or Stainless 300. Both are nominally rated at 170, 000 psi tensile strength; substantially stronger than Grade 8 hardware. Available for a wide selection of Chevrolet, Chrysler and Ford engines, plus many “universal” kits that can be matched by dimension.
Header Bolt - 3/8-16 in Thread - 1 in Long - 12 Point Head - Chromoly - Black Oxide - Small Block Chevy - Set of 12
Vehicle Fitment
Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.
Engine Compatibility
Small Block Chevy; 265–400ci
Fitment note: Engine compatibility is provided as a guide. Please verify all fitment details before ordering.
Product Specs
- Brand
- ARP
- Part Number
- 100-1211
- Catalog Number
- 00909871
- Product Line
- Header Bolt Kit
- Category
- Engines & Parts
- Type
- Hardware Kits - Other
- UPC / Barcode
- 672036023324
- Vendor Product Category
- Engine Components
- Vendor Product Subcategory
- Hardware Kits - Other
- Length
- 7.35 in
- Width
- 4.65 in
- Height
- 0.70 in
- Weight
- 0.60 lb
- Units Per SKU
- 1
- Freight / LTL
- No
- Ship Alone
- No
- Air Restricted
- No
- Prop 65
- Y
- CARB Approved
- Yes
- Clearance Item
- No
Shipping & Availability
This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.
PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Inventory shown: 4 available as of 6/3/2026.
Manufacturer warranty and return policy details will display here when available. Please refer to the manufacturers website for warranty information.
Reviews & Questions
Real product feedback when available, plus quick ways to get fitment or product help.
Other Popular Hardware Kits - Other
When you are shopping for fasteners for your prized vehicle you want to find the product that will not only serve their purpose and keep things in place but also will be long lasting and fail safe and for this reason you need to buy a fastener from a company you can trust. You might ask yourself what attributes that company should have and we at LMPERFORMANCE feel you would be justified in doing just that and in fact would be negligent if you do not do that. And so if you are in the market for fasteners then we invite you to peruse the information we have garnered about Automotive Racing Products.
For those of you who are racing aficionados we know that you will recognize the ARP brand since they were the very first company designing and engineering fasteners specifically for you and as a result have delivered a multiplicity of patented processes for the manufacturing of high strength fasteners. Not being a company to rest on their laurels ARP continually improves their processes and their quality control can be compared to the best with operations that are ISO 9001 and AS9100 registered and you can’t get better than that. The company’s focus is on a superior product that is second to none and their goal is to satisfy a need with the best possible product so that you, their customers, will be consummately satisfied.
Review our return, cancellation, shipping, warranty, and product image policies before ordering.
Contact us with questions before ordering
California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov
California Residents: TIRE WARNING: LMPerformance will not ship Tires to California.
Legal: Some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. Buyer takes all responsibility to ensure that any modifications or upgrades that have done conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. LMPerformance is not responsible for buyer not complying with Federal, State, Province, and/or Local laws, ordinances, and regulations. This policy shall be in force for all past, current, and future purchases from LMPerformance, Inc. LMPerformance will not ship ANY non-CARB compliant products to California where California requires products to be CARB certified such as Catalytic Converters and Induction Kits.
Free Shipping: Please note FREE Shipping refers to shipping within the contiguous continental US only. All other locations extra. Some items that require Truck Freight Delivery will require a Truck Freight surcharge. This surcharge is still a discounted shipping amount that is lower then the actual truck freight shipping charge that is charged to LMP. LMP will try to still give the lowest price possible for truck freight items.
Images: Images may be a representation and may not reflect the actual product. Examples would be SPEC stage 3 clutch kits which all use the same photo.
TYPOS: LMPerformance tries to present the best most accurate information on our website. Sometimes we get mistakes in product information sent from vendors such as typos. We can not be responsible for these typos, if you see something that does not look right please let us know before ordering so we can double check for you first. LMPerformance will not pay for typos in any way, monetarily or otherwise.
Price Errors: In the event that a product has mistakenly been listed at an incorrect price, We reserve the right to refuse or cancel any orders placed for product listed at the incorrect price. We reserve the right to refuse or cancel any such orders whether or not the order has been confirmed and your account charged. If your payment type has already been charged for the purchase and your order is cancelled, a full refund to your orignial payment method in the amount of the incorrect price will be issued.
Special Order ITEMS: Some items are Special Ordered and may not be returnable, or even cancellable as they are going into production specifically because you ordered them. Special Ordered items can have a 5-35% cancelation fee.
Cancellations: Instock orders cannot be canceled due to our automated ordering & fast shipping system. To keep our prices low, all cancelations are subject to a 5% cancelation fee to cover transaction processing fees. We reserve the right to charge up to a 10% cancellation fee for cancelled orders due to merchant fees, Special Order fees and the cost of processing and shipping orders.When you request a cancellation of an order or a part, please note that it may take time for a manufacturer to cancel an order if the order is drop-shipped. We also have to confirm that the product has not shipped. If the product has shipped then this must be processed as a return.Also note that sometimes products ship more quickly than expected, so we recommend that you do not purchase alternative products until receiving final confirmation of the cancellation.
Returns: We cannot accept returns on parts that have been used or installed. No returns will be accepted after 30 days. All Returns must be in original packaging. Prior authorization must be given before any return can be made. Up to a 25% Restocking Fee may apply. Special Orders may be subject to Additional Manufacturer Restock Fees as well. Shipping cost will not be refunded.Hoods as well as PCM Programmers may not be returned unless defective and only for replacement. ALL returns must be first filed using our online form found here: https://www.lmperformance.com/returns.
Lost Order Claims All lost order/package claims must be made within 5 days of the shipping date or tracking information delivery date. All claimes made after this date will not be accepted due to Shipping companies policies of filing loss claims.
Damaged Items or Incorrect Items: Please contact us right away if your item has been damaged in shipping or are incorrect. Please note that we will ship replacement items the same method of shipping the order was originally placed for. LMPerformance can not ship packages overnight at our cost if the original shipping was not also overnight. Claims must be filed in order for replacement parts to be shipped.
Warranties:Any warranty claims must be placed with the manufacturer. All of the products sold by LMPerformance, regardless of the manufacturer, are designed for Racing and Performance applications. Many of our manufacturers offer NO WARRANTY on their products, either stated or implied, due to the unusual stresses placed on the parts and because we have no control over how they are installed and used. Many of these products are designed for off-road use only and are not legal for use on public highways. If you have a question about the warranty on a specific product, please e-mail or call us. Buyer assumes all risk and liability associated with these products.
Installation: We are not responsible for or any costs associated with the installation or the improper installation of any products. Purchaser assumes the risk associated with the installation of products. We, along with the manufacturer of each product are not responsible for any direct or indirect damage to the vehicle, personal, or costs incurred from the use of products.