High-Strength Flexplate Bolts Fits GM GEN III/IV LS Engines [M11 x 1.5 w/12-Point Head]

Name: High-Strength Flexplate Bolts Fits GM GEN III/IV LS Engines [M11 x 1.5 w/12-Point Head]
Brand: JEGS
SKU: 555-83522
Price: 19.99 USD
Availability: InStock

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Ships on 11/20/2026

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Flexplate Bolts

Flexplate Bolts

Fits GM GEN III/IV LS Engines

Tensile Strength: 200,000 PSI

SCM-4140 Chromoly Steel

Heat Treated

Threads: M11 x 1.5

Under Head Length (UHL): 0.880 in.

12-Point Head

Set of 6

JEGS 555-83522 Flexplate Bolts

Upgrade your GM GEN III and GEN IV V8's stock flexplate bolts with high-strength replacements from JEGS. As you increase your engine's power, drivetrain components must be updated accordingly. These bolts are manufactured to the highest standards and provide a direct replacement with greatly increased tensile strength.

JEGS 555-83522 Flexplate Bolts Features:

Cold-formed Steel
Rolled Threads
12-Point w/3/4 in. Socket Head
Overall Length: 1.125 in.
Bolt Head Height: 0.240 in.

High Strength Bolts for Your High Power Applications

Upgrade your drivetrain to handle increased power with a high-strength set of JEGS flywheel, pressure plate, or flexplate bolts. Our direct-fit replacement bolts have a 4140 cold-rolled steel construction with a heat-treated tensile strength of 200,000 psi for peace of mind when increasing engine performance.

Part TypeFlexplate Bolt

Product LineJEGS Flexplate, Pressure Plate & Flywheel Bolts

BrandJEGS

Package Height1.05

Package Width3.85

Package Length4.65

Weight0.405 PG

Part CategoryPerformance Parts

Washers IncludedNo

Thread Size (In.)M11 x 1.5

Underhead Length0.880 in.

Fastener Yield Strength (Psi)200,000