The SPOOLOGIC Exhaust Manifold Gasket Kit SL-310-032 is a 3-piece multi-layer steel gasket set for the exhaust manifolds and turbo flange on 2020-2026 Chevrolet Silverado / GMC Sierra 2500 3500 6.6L L5P Duramax and 2019-2025 Silverado 4500 5500 6500 L5D Duramax.

Features

• Direct OEM replacement exhaust manifold gasket kit for L5P / L5D Duramax
• 2 long 4-port manifold gaskets + 1 turbo flange gasket
• Multi-layer steel construction with silver heat-shield layers
• Covers both cylinder heads and the turbo flange

What’s Included

• 2 multi-layer steel 4-port exhaust manifold gaskets
• 1 multi-layer steel turbo flange gasket — 4-bolt

Fits 2019-2026 6.6L Duramax

• 2020 – 2026 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax L5P
• 2019 – 2026 Chevrolet Silverado 4500 5500 6500 6.6L Duramax L5D

Replaces Factory OEM Part Numbers

• GM OEM: 12677819, 12705094

1-Year Limited Warranty

Every SPOOLOGIC gasket and O-ring set is covered by a 1-Year Limited Warranty against defects in materials and workmanship from the date of purchase. Warranty coverage requires that the failed gasket or O-ring first be shipped back to SPOOLOGIC for inspection. If SPOOLOGIC determines the failure was caused by a defect in materials or workmanship, the gasket or O-ring will be replaced at SPOOLOGIC’s discretion. Warranty does not cover damage from improper installation, incorrect torque, reuse of single-use gaskets, contaminated or degraded engine oil, extended oil change intervals, foreign object debris, running with a worn or leaking turbo, exposure to temperatures beyond the gasket’s rated operating range, use outside the listed fitment, cosmetic wear, or normal heat cycling marks. Warranty does not cover labor, shipping, towing, downtime, or any other costs outside the gasket or O-ring itself.