Pro Series Flexplate Bolt Kit 2442901, with Grease, for Chevrolet Gen III/LS Series Small Block, LS1, LS2, LS4, LS6, 4.8L, 5.3L, 6.0L Engines

Why Replace Your Flexplate Bolts? Flexplate bolts are the unsung heroes connecting your engine’s rotating assembly – yet their failure can trigger catastrophic drivetrain damage. Here’s why proactive replacement is non-negotiable:  1. Fatigue & Stress: The Silent Killers ●High-Torque Punishment: LS engines (especially modified 6.0L/5.3L) generate massive torque. Stock bolts stretch under repeated load cycles, losing clamp force and allowing flexplate micro-movement. ●Vibration Amplification: Worn bolts create imbalance, accelerating crankshaft damper wear and inducing harmonic vibrations that attack bearings.  Consequence: Stranded vehicles, tow bills exceeding bolt cost 100x.  2. Corrosion: More Than Surface Rust ●Steel vs. Environment: Exposure to road salts/moisture corrodes threads, increasing breakage risk during removal. Heat cycles further embrittle compromised metal. ●Hidden Danger: Even "clean-looking" bolts may have internal thread corrosion, jamming or shearing at 85 ft-lb install torque.  3. Design Limits of OEM Bolts ●Generic Material: Factory bolts rarely exceed 150,000 PSI tensile strength. Our 200,000 PSI aerospace-grade steel resists stretch 33% longer. ●Inferior Coatings: OEM black oxide wears thin; our deep-penetration coating bonds to metal for lifetime corrosion resistance.  Why THIS Bolt Kit Solves It: ●Precision Length (0.880”): Engineered for direct crank-flange contact. Adding washers – a common "fix" for loose OEM bolts – destabilizes clamp load. ●12-Point Grip: Maximizes socket engagement, preventing rounding during 85 ft-lb torque application. ●Rust-Proof Grease Included: Not pre-coated – you control lubrication. Apply to threads to ensure accurate torque readings and prevent galvanic corrosion between steel bolt/aluminum crank.  Specification: ●M11 x 1.5 Thread Pitch ●0.880" Underhead Length ●12-Point Head ●Black Oxide Surface Finish ●Material Strength: Rated to 200,000 PSI

• 【Purpose】 Flexplate Bolt for Chevrolet Gen III/LS Series Small Block, LS1, LS2, LS4, LS6, 4.8L, 5.3L, 6.0L Engines
• 【Specification】0.880" Underhead Length, M11 X 1.5 Thread , 12 Point Head, Black Oxide Surface. Tensile Strength Rated 200,000 PSI
• 【 Top Quality 】The flexplate bolts are made of high-quality steel, offering high strength and long service life. Includes advanced rust-proof lubricating grease.
• 【Set includes】Flexplate bolt x 6, 14g rust-proof grease x 1. Installation: Tighten bolts in an alternating or cross pattern to 85 ft-lbs using the supplied grease.
• 【Caution】Do not use any washers on the flexible plate bolts. They are designed to be installed without them