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Exhaust› Headers, Manifolds and Components
Mr. Gasket
Header Bolt Set Allen Head 3/8-16 x 3/4 Inch Fits AMC 290-401, Chevrolet Small Block 262-400, Chrysler 383-440 except Hemi, Pontiac 326-455, Oldsmobile 330-455 Mr Gasket
SKU: M00S 916
Easy — 1–2 hours
Overview
Show original supplier description
Part #: 916
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 and black oxide coated.If you've ever had a set of headers where a socket just seemed it wouldn't fit these might be your answer. These bolts also have a socket head or Allen key drive in the center for just that problem.Sold as a set of 12Fits:AMC 290-401Chevrolet Small Block 262-400Chrysler Big Block 38 Inch-440 (Does not Fit 426 Hemi)Pontiac 326-455Oldsmobile 330-455Grade 8 InchSteelBlack Oxide CoatingAllen Head(12) Pieces Per SetDetails:Color: BlackEmission Code: 5Finish: Black OxideMaterial: SteelSize: 3/8-16 x 3/4Warranty: Manufacturer's Limited 1 Year Warranty
Features:
- Grade 8 Steel
- Black Oxide Coating
- Allen Head
- (12) Pieces Per Set
Header Bolt - 3/8-16 in Thread - 0.750 in Long - Allen Head - Steel - Black Oxide - AMC V8 / GM V8 / Mopar B / RB-Series - Set of 12
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Mr. Gasket |
| Part Number | M00S 916 |
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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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