MANATEE MLS Head Gasket 2PCS for LS1/LS6 V8 4.8-5.7L (2002-2015 GM Vehicles)

Overview

MANATEE presents an MLS two‑piece cylinder head gasket set designed for LS1/LS6 variants and 4.8L–5.7L GM V8 engines. Built to support robust sealing through daily driving and occasional high-heat conditions, this kit emphasizes precise fit and durable materials without promising guaranteed results.

Crafted to align with OEM expectations, the gaskets combine precision geometry with multi-layer steel construction. The result is a product that aims to maintain compression integrity across engine cycles while resisting common sealing challenges that can occur in V8 rebuilds and routine maintenance.

Compatibility and part numbers

The set includes two MLS head gaskets with part numbers 12589226, 12498544, 12565390, 12573949, and 98544. It is designed for 2002–2017 GM applications featuring 4.8L, 5.3L, and 5.7L V8 engines and LS1/LS6 variants. This broad compatibility covers a wide range of Chevrolet, GMC, Buick, Pontiac, Hummer, Cadillac, and Saab models.

• Chevrolet: Avalanche, Trailblazer, Suburban, Tahoe, Corvette, Impala, Colorado, Express, Silverado 1500/2500
• GMC: Canyon, Envoy, Yukon XL, Sierra, Savana 1500/2500/3500
• Other brands in the GM family: Buick Lacrosse, Rainier; Pontiac Grand Prix, Firebird, GTO; Saab 9-7X; Cadillac CTS-V; Hummer H3/H3T

Engineered for sealing reliability

• Multi‑Layered Steel design aims for a tighter, more consistent seal under compression and heat
• Manufactured to OEM original accessory standards to match GM specifications
• Careful production and testing processes to ensure appropriate form, fit, and function
• Backed by professional technical support and a satisfaction‑oriented service approach

Materials, standards, and real‑world use

The gasket set emphasizes durability, with a focus on stable sealing during engine cycles. It is well suited for engine rebuilds and routine maintenance where OEM‑grade parts are preferred. While performance can vary with installation conditions and engine health, the design supports consistent sealing performance within typical GM V8 applications.

What you can expect

Users may notice smoother sealing transitions during thermal cycling and steady compression across service intervals. The two‑piece MLS design is intended to support reliable sealing without altering the engine’s intrinsic behavior. This product is intended as a high‑quality replacement option for compatible GM V8 engines.