Mercury MerCruiser 7.0L V8 LS Valve Cover Set 12611021 12611059 OEM GM
OEM-style GM LS-family V8 valve cover set removed from a Mercury / MerCruiser 7.0L marine engine. This matching left and right valve cover assembly features part numbers 12611021 and 12611059, associated with GM Gen IV LS-based engine applications.
These aluminum valve covers are designed to enclose the engine's valvetrain while providing mounting provisions for the ignition coil brackets, oil fill assembly, and crankcase ventilation connections.
The set includes both valve covers with installed mounting bolts and rubber grommets, an oil fill neck and cap, and attached breather/vent tubing as pictured. The oil fill cap is marked SAE 5W-30.
Although removed from a Mercury/MerCruiser marine engine, these GM LS-family components may have additional applications. Buyers should verify part numbers, mounting configuration, and compatibility before purchase.
Highlights
OEM-Style GM LS-Family Valve Covers
Removed From a Mercury / MerCruiser 7.0L V8 Marine Engine
Part Numbers 12611021 / 12611059
Left and Right Valve Cover Set
Aluminum Construction
Factory Mounting Bolt Locations
Installed Mounting Bolts and Rubber Grommets
Oil Fill Neck and Cap Included
Attached Breather / Vent Tubing
GM Gen IV LS-Family Design
Condition
Used – Normal Engine Wear
Surface oxidation, discoloration, and staining throughout
Visible oil residue and grime from previous engine use
Scratches and cosmetic wear on aluminum surfaces
Mounting bosses and bolt locations appear intact
No obvious major cracks or broken sections visible
Oil fill cap and attached vent tubing included
Gaskets and seals should be inspected and replaced as needed
Not independently pressure-tested or inspected for sealing integrity
Please review all photographs carefully for exact condition and included components. Sold exactly as pictured.
Specifications
Brand: GM / Mercury MerCruiser Application
Part Type: Engine Valve Covers / Rocker Covers
Part Numbers: 12611021 / 12611059
Engine Family: GM Gen IV LS-Based V8
Donor Engine: Mercury / MerCruiser 7.0L V8
Material: Aluminum
Quantity: 2 Valve Covers – Left and Right
Oil Fill Cap Marking: SAE 5W-30
Condition: Used
Testing: Not Independently Verified
Included: Both Valve Covers, Installed Mounting Hardware, Oil Fill Neck and Cap, and Attached Vent Tubing as Pictured
Fitment: Removed from a Mercury/MerCruiser 7.0L marine engine. Compatibility with other GM LS-family engines has not been independently confirmed.
Important: Part numbers 12611021 and 12611059 may be associated with multiple GM LS-family engine configurations. Buyer must verify part numbers, valve cover dimensions, ignition coil mounting provisions, and ventilation connections before purchase.
Dealer Sale – Sunset Marine TX LLC
SKU: 10903