LS Engine Oil Galley Barbell Plug | Fits 4.8L 5.3L 5.7L 6.0L 6.2L 7.0L | OEM 12573460 | Expansion Restrictor Seal | Pack of 1 | Direct Replacement

Maintain optimal oil flow and protect your engine’s internal components with this LS engine oil galley barbell plug, designed to fit a wide range of LS V8 engines from 4.8L to 7.0L. Commonly known as an oil galley restrictor or expansion plug, this component matches OEM part number 12573460 and direct interchange numbers 12558340 and 12618054. Ideal for stock rebuilds, performance upgrades, or replacing worn-out plugs, this durable plastic plug ensures proper oil routing inside the block, helping maintain oil pressure where it matters most. Engineered to factory specifications, it installs easily in the engine block location and is sold as a pack of 1 for your convenience. Keep your LS engine running strong—choose this reliable oil galley barbell plug for your next build or maintenance project. Engine Quest produces high-quality OE-style replacement parts. Each part undergoes rigorous testing and inspections to meet EngineQuest’s exact specifications. Designed for precision manufacturing and durability, our products ensure easy installation. With nearly 500 SKUs available, the company specializes in hard-to-find, in-demand parts, including those no longer available from the OEM, difficult to salvage, or with prohibitively high OEM costs.

• Precision Oil Galley Plug – Replacement barbell plug for LS series engine blocks; controls oil flow through internal passages.
• Direct OEM Replacement – Replaces part numbers 12573460, 12618054, 12558340; matches factory specs for easy installation.
• Durable Construction – Made from high-quality plastic for reliable sealing and long service life.
• Fits Multiple LS Engines – Compatible with LS1, LS3, LS4, LS7, L99, LSA engines from 4.8L to 7.0L (1997–2010).
• Sold Individually – Includes one oil galley restrictor plug for use in engine block rebuilds or upgrades.
• EngineQuest: Over 75 Years of U.S. Automotive Expertise – Designed in the USA with Top-Quality Control. Proud IMCA/WISSOTA Supporter. Backed by a 1-Year Parts & Labor Warranty