Quicksilver Exhaust & Intake Manifold Gasket for 3.0L MerCruiser/3.0LX — OEM fit, durable seal

Quicksilver 815528 is an OEM-quality exhaust and intake manifold gasket engineered to restore a reliable seal on select 3.0L MerCruiser and compatible Volvo Penta marine engines.

This gasket is made to the specifications boat owners and technicians expect from Quicksilver: direct-replacement fit for the 3.0L (1998 and newer) and 3.0LX (1990–1997) General Motors–based marine engines used in MerCruiser stern drives and inboards, and for like CID engines installed by Volvo Penta in North America. It’s intended for routine engine service or repairs when exhaust or intake sealing surfaces need a dependable gasket that meets original equipment tolerances.

Will this gasket fit my MerCruiser 3.0L engine?

Check the engine model year and designation before ordering. The 815528 gasket is specified for 3.0L MerCruiser engines from 1998 onward and for the 3.0LX family covering 1990–1997; it also fits compatible 3.0L units used by Volvo Penta in North America.

• Designed for GM-based 3.0L and 3.0LX marine engines
• Compatible with MerCruiser stern drives and inboards per manual
• Also supports select Volvo Penta installations where the CID matches
• Always verify application in your owner’s or service manual

How does the Quicksilver 815528 gasket help during repair?

The gasket restores the seal between exhaust and intake manifolds to prevent leaks that can reduce performance or allow exhaust gases where they don’t belong. Using an OEM-quality Quicksilver part keeps mating surfaces aligned to factory tolerances, simplifying reassembly and helping ensure long-term sealing.

• OEM-spec material and dimensions for accurate mating surface contact
• Helps prevent exhaust leaks that lead to noise and efficiency loss
• Simplifies installation with correct fit and hole alignment
• Durable under typical marine heat cycles and vibration

What should I prepare for installation and maintenance?

Before installing, clean the manifold faces and inspect for warping or damage; a damaged mating surface may still require machining or replacement. Use manufacturer torque specs and sequence when fastening manifolds to avoid uneven compression and premature gasket failure.

• Clean gasket surfaces of old material, oil, and debris
• Inspect mating surfaces for flatness and corrosion
• Follow torque specs in the engine service manual during reassembly
• Replace other worn gaskets or hardware while the system is disassembled

Why choose Quicksilver parts over generic alternatives?

Quicksilver produces replacement parts designed and tested alongside Mercury Marine original equipment, so fit, material selection, and performance closely match factory parts. For boat owners who prioritize correct fit and long-term reliability, Quicksilver minimizes the variables that can complicate marine engine repairs.

• Manufactured to OEM tolerances for reliable fit and sealing
• Backed by decades of marine parts experience and testing
• Reduces risk of repeated repairs from incorrect aftermarket sizing
• Widely used by professional technicians and hobby mechanics alike

Who is this for: The Quicksilver 815528 exhaust & intake manifold gasket is intended for MerCruiser and Volvo Penta boat owners, marine mechanics, and service shops performing maintenance or repairs on GM-based 3.0L and 3.0LX marine engines. Choose this gasket when you need a direct-fit, OEM-quality replacement that aligns with factory specifications and service procedures; always confirm engine model and year against your owner’s or service manual before purchase or installation.