Find any Amazon.com product's deals and best prices with our free Amazon deal finder and price tracker. Simply paste the product link (URL) or search by name in the box above. You'll get full product information, Deal Score, and all current deals. Shop smarter with the best Amazon deals finder in the USA.
x
Sorry, Something went wrong!
8915 Locking Header Bolt Kit for Mopar Small Block
✅ In stock
📉 Price recently dropped
D
Grade
Analysis Confidence
100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Oct 17, 2026 5:36 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
😐 Weak Deal- 😐Verdict: Weak Deal. Marginal discount. Prices may drop further soon.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 🏷️A 17% cut from the official retail price adds further appeal.
- 📉No lower price has surfaced in the past twelve months, making this one of the standout deals in recent memory.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
6.59/22
Market Standing
7.25/20
Deal Strength
16/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Mercantile Trading
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓SMALL BLOCK MOPAR HEADER KIT (12-PIECE): Designed specifically for Small Block Mopar engines, the Model 8915 kit includes (12) 5/16-18 x 7/8-inch locking bolts featuring a precise 6-point (6pt) double hex head 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 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
Material
Nickel
Thread Size
5/16-18
Exterior Finish
Nickel
Manufacturer Grade
Grade 8
Head Style
Hex
Fastener Type
Hexagon Bolt
Brand
Stage 8
Thread Type
Unc
Item Diameter
0.31 inches
Thread Style
Right Hand
Item Hardness
Grade 8