Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
| Attribute | Value |
|---|---|
| Applications | Fits Gm V6, Sb 265-400, Buick, Olds, Pontiac 79 And Earlier, Mopar Bb 383-440 Exc 413, Amc V8's W 3/8in Bolts |
| Category | Header Bolts |
| Feature/Benefit | Wedge-locking Technology Eliminates Constantly Re-tightening Exhaust Collector Bolts; Blocks Bolt-loosening Rotation Caused By Vehicle Vibrations. |
| Finish | Black Oxide |
| Head Drive Type | Hex |
| Material | Steel |
| Thread Type | Fine |
This part fits the following vehicles:
No fitment data available
We offer fast, reliable shipping on all orders:
We want you to be 100% satisfied with your purchase. That's why we offer:
This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.
Warranty does NOT cover:
In operation since 2007. Trusted by over a million DIYers, mechanics, and body shops across all 50 states.
If it doesn't fit, we make it right. No gimmicks, no fine print.
Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.
Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.
Ask Wrenchy →