Opuiue Leaf Spring Bolt Kit 9/16 x 4-1/2 Grade 8 — Hardened Steel 6-Bolt Kit with Lock Nuts & Washers

Heavy-duty Grade 8 leaf spring bolt kit (9/16" x 4-1/2") with lock nuts and washers engineered to replace worn suspension fasteners on 1988–2002 Chevrolet and GMC trucks and SUVs.

This complete Opuiue kit supplies six hardened bolts, six lock nuts, and twelve flat washers designed as direct OE-style replacements for leaf spring fasteners. Built from Grade 8 hardened steel, the hardware is intended for suspension use where strength, alignment, and long life are priorities. Before installing, confirm vehicle make, model, year, and trim to ensure compatibility.

Will these bolts fit my 1988–2002 Chevrolet or GMC truck?

The Opuiue kit is manufactured to match the common leaf spring fastener size used on many 1988–2002 Chevy and GMC full-size pickups and SUVs. Fitment covers C/K 1500, 2500, 3500 series, Silverado, Sierra, Suburban, Tahoe, Yukon and related trims, but exact compatibility depends on your vehicle's suspension configuration and any previous modifications.

• Bolt size: 9/16" diameter x 4-1/2" length.
• Hardware included: 6 bolts, 6 lock nuts, 12 flat washers.
• Check factory service manual or product details page for full fitment verification.

How strong and durable are these Grade 8 fasteners?

Grade 8 steel indicates a high-strength fastener with superior tensile properties compared with lower grades. The hardened finish improves resistance to deformation under load, which is important for leaf spring assemblies that experience cyclic stresses and heavy loads.

• Grade 8 hardened steel construction for elevated tensile strength.
• Lock nuts and flat washers included to maintain clamping force and alignment.
• Corrosion-resistant surface treatment suitable for road conditions.

What are the installation and maintenance considerations?

Installation is straightforward when replacing worn or corroded leaf spring bolts, but verify torque specifications and any recommended sequence from the vehicle manufacturer. Use appropriate tools and observe safety measures; if suspension mounts show excessive wear, address those components during the replacement.

• Follow OEM torque specs; re-torque after initial road use if advised.
• Inspect leaf spring eyes, bushings, and shackles during installation.
• Replace in matched sets to ensure even suspension performance.

What comes in the box and how does it restore performance?

The kit delivers all fasteners needed to service up to three leaf spring attachment points on a typical full-size truck rear axle. Replacing stretched or corroded bolts and failed lock nuts restores correct clamp load, which helps preserve alignment and leaf spring positioning for more consistent ride behavior.

• Contents: 6 hardened bolts (9/16" x 4-1/2"), 6 lock nuts, 12 flat washers.
• Direct-replacement design to match OE mounting geometry.
• Helps maintain suspension alignment and reduces hardware loosening.

Who is this for: The Opuiue Leaf Spring Bolt Kit is aimed at mechanics, DIY truck owners, and fleet service technicians who maintain or restore late‑'80s through early‑2000s Chevrolet and GMC full-size trucks and SUVs. Choose this kit if you need a straightforward, high-strength replacement set to address worn, corroded, or loose leaf spring fasteners and want OEM-compatible hardware for dependable suspension reassembly.