- Home Page /
- Automotive /
- Performance Parts & Accessories /
- Exhaust Systems & Parts /
- Headers & Accessories /
- Header Bolts /
- 8911 3/4" Locking Header Bolt Kit for GM Smal...
0 ratings
Item #:
4178223
8911 3/4" Locking Header Bolt Kit for GM Small Block
87% of respondents would recommend this to a friend
Item #:
4178223
JMD 14353
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Friday, November 20
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
What Stands Out
Durable Materials
Constructed from high-quality steel, this locking header bolt kit ensures long-lasting performance and resistance to corrosion, making it perfect for high-heat engine environments.
Easy Installation
Designed for GM Small Block engines, the kit facilitates straightforward installation, saving time and effort while enhancing overall engine efficiency.
Secure Locking Design
With innovative locking mechanisms, these bolts prevent loosening during operation, providing peace of mind and maintaining optimal engine performance under various driving conditions.
Product Details
| Thread Size | 3/4 inch |
| Exterior Finish | Per Item Description |
| Manufacturer Grade | Grade 8 |
| Screw Head Style | Hex |
| Fastener Type | Hexagon Bolt |
| Thread Type | Unc |
| Thread Style | Right Hand |
| Item Hardness | Grade 8 |
| Head Type | Double Hex |
| Thread Class | 2A |
| Compatible Groove Diameter | 0.75 inches |
| Drive System | Internal Hex |
| Grade Rating | Grade 8 |
| Part Interchange Info | 8911 |
| Material Type | Nickel |
| Finish Types | glossy |
| Item Diameter | 0.75 inches (1.91 cm) |
| Size Name | Stock |
| Number of Pieces | 12 |
| Fastener Size | 3/4 inch |
| Thread Coverage | Fully Threaded |
| Item Dimensions | 3.5 x 2.6 x 0.5 inches (8.9 x 6.6 x 1.3 cm) |
| Item Weight | 8.48 ounces (240.41 grams) |
| Outside Diameter | 0.75 inches |
| Brand | Stage 8 |
| UPC | 765709891105 |
| Number of Packs | 1 |
| Set Name | 12 |
| Global Trade Identification Number | 00765709891105 |
| Unit Count | 1 Count |
| Manufacturer | Stage 8 |
| Number Of Items | 1 |
| Included Components | SBC SHORT H/BLT |
| Item Type Name | SBC SHORT H/BLT |
| Model | 8911 |
| Part Number | 8911 |
| Material | Nickel |
| Head Style | Hex |
| Country of Origin | This item will be imported from US |
| Date First Available | May 06, 2021 |
Who Should Buy?
-
Performance Mechanics
Ideal for mechanics focused on enhancing engine performance and ensuring a secure header attachment for GM small blocks.
-
Enthusiast Builders
Perfect for automotive enthusiasts building or restoring GM small block engines with reliable and durable fastening solutions.
-
Track Racers
Essential for racers needing dependable header security during high-stress racing conditions, preventing loosening and leaks.
-
Casual Drivers
Not suitable for everyday drivers who may not benefit from specialized header bolts for standard performance engines.
Product Description
8911 3/4" Locking Header Bolt Kit for GM Small Block
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
How to Shop 8911 3/4" Locking Header Bolt Kit for GM Small Block Online From Ubuy?
Answer: It’s easy to shop 8911 3/4" Locking Header Bolt Kit for GM Small Block online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location. -
Question:
Is 8911 3/4" Locking Header Bolt Kit for GM Small Block Available to Shop Online in Jamaica?
Answer: Yes, at Ubuy Jamaica this product is available for you to shop at a reasonable price. The 8911 3/4" Locking Header Bolt Kit for GM Small Block is not available locally but you can trust us with our express shipping services. -
Question:
How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
Stage 8 Header Bolts Editorial Review
8911 3/4" Locking Header Bolt Kit for GM Small Block is designed for those tired of header bolts backing out and causing leaks. Made with Grade 8 nickel material, these bolts provide durability and reliability with a fully threaded design that resembles a double hex head style. Users highlight the effectiveness of the locking feature, which has eliminated their longstanding header leak issues. While some users noted the need to grind down certain retainers for fitment, the overall feedback emphasizes the quality and performance of these bolts in maintaining a secure header connection.
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Effective locking feature prevents bolts from backing out
- Durable Grade 8 nickel construction
- Fully threaded design for secure fit
- Compatible with GM small block headers
- Eliminates header leak headaches
- Easy installation for most builds
Cons
- Some users need to modify retainers for fitment
Platform Trust & Buyer Confidence
MB
Mona
Verified buyer
“Everything was efficient and fast. ”
05 November 2026 · via Trustpilot
MT
Music
Verified buyer
“The prices—including shipping costs and customs duties—are clear from the very beginning, with no hidden fees. I highly recommend using their services. My experience with the "Ubuy" website was excellent. I purchased a PRS USA Swamp Ash Special guitar, and it arrived in just 11 days. The shipping service was fantastic, and the product arrived in perfect condition. What I particularly appreciated about the site is that the prices—including shipping costs and customs duties—are clear from the very beginning, with no hidden fees. I highly recommend using their services.”
05 November 2026 · via Trustpilot
WF
William
Verified buyer
“I can't fault this purchase. Had a scarce part i needed, cheaper than i could source it in the UK, ordered and was followed up with great communication and speedy delivery of a very well packaged part.”
06 November 2026 · via Trustpilot
A
Andrew
Verified buyer
“Fast delivery, good and secure packaging, everything was fine and with no problems.”
06 November, 2026 · via Trustpilot
SM
Stephen
Verified buyer
“I am very happy with my insoles purchase, they make my work boots very comfortable and soft to walk on and even mitigate the vibration from driving the truck all day. I would highly recommend this company for online purchases, reliability of product delivery and value for money.”
07 November 2026 · via Trustpilot
WHY SHOP WITH US
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
JMD 14353
Order now and get it around Friday, November 20
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.