Michigan Motorsports LS Engine Block Coolant & Oil Plug Kit - Fits 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LS3 LQ4 LM7 L99 LR4 | Includes Barbell Oil Galley Plug

Seal up every critical passage in your Gen III/IV LS engine with the Michigan Motorsports LS Block Coolant & Oil Plug Kit (E1300). Tailored for 4.8–6.2 L engines—LS1, LS2, LS3, LQ4, LM7, L99, LR4—this essential kit includes four sealed threaded coolant/oil block plugs, a press-in oil galley plug for the front, and a barbell-style oil plug for the rear galley. Avoid costly leaks and ensure proper oil pressure during rebuilds, refreshes, or performance upgrades. The precision-designed plugs fit perfectly, prevent seal failure, and simplify assembly—ideal for engine builders or swap projects.

• Fits All 4.8–6.2 L LS Blocks – Compatible with LS1, LS2, LS3, LQ4, LM7, L99, LR4 platforms; ideal for Gen III & IV engine builds.
• Complete Plug Coverage – Includes four threaded block plugs, one front galley press plug, and rear barbell plug for maximum sealing power
• Barbell-Style Oil Galley Design – Allows oil to pass through while providing a dual-seal structure that ensures reliable rear galley performance.
• Pre-Applied Sealing and Heat Resistance – Thread sealant on coolant/oil plugs and snug press-fit sleeves keep heat and fluids in place during high-stress applications.
• Professional Quality Finish – Machined components resist leaks and corrosion; designed for hassle-free block teardown and re-access during future maintenance.