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- 8911 3/4" Locking Header Bolt Kit for GM Smal...
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Item #:
4178223
8911 3/4" Locking Header Bolt Kit for GM Small Block
86% of respondents would recommend this to a friend
Item #:
4178223
XCD 226
Price Details
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*All items will import from US
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Imported from USA store
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Order now and get it around Monday, November 16
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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
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Customer Questions & Answers
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Question:
How to Shop 8911 3/4" Locking Header Bolt Kit for GM Small Block Online From Ubuy?
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Is 8911 3/4" Locking Header Bolt Kit for GM Small Block Available to Shop Online in Anguilla?
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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
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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
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Diana
Verified buyer
“I have, in fact, had bad experiences on several occasions with service providers or shipping companies from America—definitely—but this is the first and only reputable and reliable company I have encountered so far; huge praise for their work. ”
23 October 2026 · via Trustpilot
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Jarl
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“Fast shipping and A+ product. ”
24 Oct 2026 · via Trustpilot
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Botibita
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“Great Range of Products and Excellent Service. The ordering and delivery process was excellent! I was able to purchase an item that I couldn’t find locally, and everything went smoothly from purchase to delivery. Thank you for the excellent service! ”
24 October 2026 · via Trustpilot
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