The SPOOLOGIC Pro-Series V-Band Clamp Kit SL-330-032 bundles 2× Turbo to Downpipe clamp and 1× Downpipe to Exhaust Pipe clamp for a complete 2004.5-2015 Chevrolet Silverado GMC Sierra 2500 / 3500 6.6L Duramax LLY LBZ LMM LML V-band joint replacement. Engineered to last a lifetime — stainless from band to latch on every clamp, with no stamped or carbon-steel failure points.

Every clamp in this kit is built from corrosion-resistant 304 stainless steel: a mandrel-formed 304SS band, floating V-segments, a heavy-gauge 304 stainless T-bolt, a flanged stainless lock nut, and a Pro-Series Stainless T-Bolt Latch with Quick-Release Action. The upgraded latch is the critical difference — OEM and budget aftermarket clamps use a thin-gauge stamped sheet-metal latch loop that tears under thermal cycling and clamp tension. That stamped loop is the #1 failure point on factory V-band clamps. The Pro-Series latch eliminates it on every clamp in the kit.

Common V-Band Clamp Failure Symptoms

If your 6.6L Duramax truck is showing any of these symptoms, the factory or budget aftermarket clamps are most likely the cause:

• Latch loop tearing or stretching — the thin-gauge stamped sheet-metal loop on factory and budget clamps tears, lets the T-bolt slip, and the clamp loses tension
• Exhaust or boost leak at the V-band joint — ticking, hissing, or sooting around the clamp under load
• Clamp band stretching or warping from heat cycling — thin OEM bands lose clamping force over time
• Corroded T-bolt or seized nut — non-stainless OEM hardware rusts in place and breaks during service

Complete V-Band Service in One Box

Every joint replaced at the same time means no mixed-old-and-new tension across the exhaust system. Each clamp is application-specific to its joint — no guesswork, no universal-fit compromises. Pro-Series build quality on every clamp, all backed by the same Lifetime SPOOLOGIC Warranty.

Features

• Complete V-band clamp kit — every joint covered with Pro-Series build quality
• Pro-Series Stainless T-Bolt Latch with Quick-Release Action on every clamp — replaces the stamped sheet-metal loop that fails on OEM
• Mandrel-formed 304SS bands with floating V-segments — no corrosion, no seizing
• Application-specific clamps — direct-fit for 6.6L Duramax
• Designed to last a lifetime — backed by a Lifetime SPOOLOGIC Warranty

What's Included

• (2) SPOOLOGIC Pro-Series V-Band Clamp — Turbo to Downpipe (SL-330-031)
• (1) SPOOLOGIC Pro-Series V-Band Clamp — Downpipe to Exhaust Pipe (SL-330-030)

Fits 2004.5-2015 6.6L Duramax LLY LBZ LMM LML

• 2004.5 – 2015 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax LLY LBZ LMM LML

Turbo Applications

This kit fits the following factory turbocharger:

• Garrett GT3788VA (2004.5-2016 6.6L Duramax LLY/LBZ/LMM/LML)

Replaces Factory OEM Part Numbers

• GM OEM: 11611439, 15127672, 15671559, 97354769

Backed by a Lifetime SPOOLOGIC Warranty

Every SPOOLOGIC Pro-Series V-Band Clamp in this kit is covered by a Lifetime Warranty against defects in materials and workmanship for the original purchaser. To initiate a warranty claim, the clamp must first be shipped back to SPOOLOGIC at the customer's expense for inspection. If SPOOLOGIC determines the clamp is defective in materials or workmanship, a replacement will be shipped at SPOOLOGIC's cost — no time limit, no questions. Warranty does not cover damage from improper installation, over-torquing, impact, use outside the listed fitment, or exhaust modifications that exceed the clamp's operating parameters. Warranty does not cover labor, downtime, or any other costs outside the clamp itself.