SKU: SPE4698
UPC: 089601469805
MPN: SPE-4698
The Spectre 4698 flywheel bolt kit covers flywheel attachment on many Chevy and Ford engines with six grade 8 bolts and six matching lock washers. It's a straightforward replacement set for clutch jobs, engine rebuilds, and any time the original hardware has been stretched or reused too many times. Measuring 7/16 inch-20 by 1 inch, these bolts thread into the standard flywheel pattern used across a wide range of GM and Ford applications. We keep this kit stocked alongside the rest of our fasteners for builders who'd rather start fresh than gamble on tired bolts.
Each bolt is forged from steel and rated grade 8, the higher tensile class you want holding a rotating flywheel against the torque loads it sees in service. The black oxide plating adds corrosion resistance without building up the kind of thickness that throws off torque readings. Bolt heads are a hex profile measuring 0.240 in thick. The included security lock washers help keep the fasteners seated under vibration, which matters on a part spinning at engine speed. Per manufacturer specifications, the set ships as a blisterpack containing six bolts and six washers, so you have a complete fastener count for a standard flywheel without sourcing washers separately. If your build calls for matching ring gear hardware, check our ring gear bolts.
Reach for this set when you've got the transmission out and the flywheel off — clutch swaps, rear main seal work, or a full short-block refresh. Reusing flywheel bolts is one of those shortcuts that comes back to haunt you, so fresh grade 8 hardware is cheap insurance against a backed-out bolt. The 7/16 inch-20 thread fits common GM and Ford flywheel patterns, but confirm against your engine before final torque. For drivetrain projects that need more than flywheel hardware, browse our bolt kits and the full flywheel bolts selection.
The set is engineered for many Chevy and Ford engines using the standard 7/16 inch-20 flywheel thread pattern. Because flywheel patterns vary across model years and displacements, confirm the thread size and bolt count against your specific engine before installation.
The blisterpack includes six grade 8 bolts and six security lock washers, giving you a complete fastener count for a standard flywheel without buying washers separately.
They are grade 8 steel bolts, the higher tensile class suited to the torque and rotational loads a flywheel sees. Each is black oxide-plated for corrosion resistance, and the plating is thin enough that it won't significantly affect torque readings.
Reusing flywheel bolts is risky since they can stretch under repeated torque cycles and lose clamping force. Fresh grade 8 hardware with new lock washers is inexpensive insurance against a backed-out bolt on a part spinning at engine speed.
Each bolt measures 7/16 inch-20 by 1 inch with a hex head that is 0.240 in thick, per manufacturer specifications.
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