Mr. Gasket
Header Bolts 3/8-16 x 3/4 Inch Hex & Socket Head Black Oxide Fits AMC 290-401, Chevrolet Small Block 262-400, Chrysler 383-440 except Hemi, Pontiac 326-455, Oldsmobile 330-455 Mr Gasket
SKU: M00S 3420G
Description
Part #: 3420G
When installing headers you will need header bolts, factory exhaust manifold bolts won't work. These Mr. Gasket Header Bolts are Grade 5 for strength, black oxide coated, and have a hex head that is ideal for use where space is minimal - your typical header flanges. Ever had a set of headers where a socket just seemed it wouldn't fit These bolts also have a socket head or Allen key drive in the center for just that problem.
Features:
- Made From High Strength Steel
- Corrosion Resistant Black Coating
- Has Both Socket And Hex Heads For Ease Of Use
- 12 per Package
Header Bolt - 3/8-16 in Thread - 0.750 in Long - Hex / Allen Head - Steel - Black Oxide - AMC V8 / GM V8 / Mopar B / RB-Series - Set of 12
Fitment
Fitment Guaranteed
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Specifications
| Brand | Mr. Gasket |
| Part Number | M00S 3420G |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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