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8912A Locking Header Bolt Kit with 1" Bolts
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 3, 2026 3:19 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price sits right around what this item typically fetches.
- 🏷️The listed retail price is trimmed by 14% at checkout.
- 📉Pricing has not dipped this low in roughly six months, placing this offer among the better deals in that window.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0.37/28
Recent Value
1.95/22
Market Standing
13/20
Deal Strength
10/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Evergrow Supply
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓BIG BLOCK CHEVY & FORD HEADER KIT (16-PIECE): Designed specifically for Big Block Chevrolet (BBC) and Big Block Ford (BBF) engines, the Model 8912A kit includes (16) 3/8-16 x 1-inch locking bolts featuring a precise 6-point (6pt) double hex head (DHH) to securely fasten your exhaust headers.
✓FAIL-SAFE MECHANICAL LOCKING: Manufactured by Stage 8, this patented active mechanical locking system provides a fail-safe solution that prevents fastener loosening even under extreme engine vibration when installed as directed.
✓PREVENTS EXHAUST LEAKS: Say goodbye to blown header gaskets. Engineered to withstand severe thermal expansion cycles, the heavy-duty hardware will not stretch when hot, ensuring your header flanges stay tightly sealed.
✓EASY INSTALLATION & FULLY REUSABLE: The precise 6-point (6pt) double hex head (DHH) allows for practical wrenching and installation in tight engine bays. The entire locking mechanism is completely removable and perfectly reusable without losing any locking performance.
✓INSTANT VISUAL INSPECTION: No need to constantly get under the hood with a wrench to check for tightness. The active locking mechanism allows for quick and easy visual inspections, delivering ultimate peace of mind for your custom build.
⚙️ Specifications
13.3 ounces
Stage 8
B000NN4BU4
8912A
No
February 26, 2007
Item Weight
12 ounces
Manufacturer
Stage 8
ASIN
B000NN4BU4
Item model number
8912A
Is Discontinued By Manufacturer
No
Date First Available
February 26, 2007
Best Sellers Rank
See Top 100 in Automotive
12 ounces
Stage 8