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Exhaust› Headers, Manifolds and Components
Mr. Gasket
Header Bolts 5/16-18 x 3/4 Inch Hex Head Black Oxide Fits Small Block Chrysler 318/340/360 & Hooker Headers with adapter Plates Mr Gasket
SKU: M00S 976
Easy — 1–2 hours
Overview
They are heat-treated for strength and made from Grade 5 material, making them ideal for tight spaces.
Show original supplier description
Part #: 976
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 compact hex head that is ideal for use where space is minimal - your typical header flanges.Sold as a set of 14.14 per PackageDetails:Emission Code: 5Finish: Black OxideMaterial: SteelSize: 5/16-18 x 3/4Warranty: Manufacturer's Limited 90 Day Warranty
Features:
- 14 per Package
Header Bolt - 5/16-18 in Thread - 0.750 in Long - Hex Head - Steel - Black Oxide - Small Block Mopar - Set of 14
Vehicle Symptoms
- exhaust tick after cold start
- loose or missing header bolts
- exhaust smell in engine bay
- header flange rattling at idle
- broken or rusted header bolts
Relevant Conversations
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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 976 |
About MOTORMIA
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Returns & Fitment
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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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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