Description
Product Overview
OywhC presents the Oil Valley Block Off Plug, a precision‑engineered solution designed for GM engines that do not feature Displacement on Demand (DOD) technology. Constructed from high‑quality stainless steel alloy, each plug offers exceptional strength, corrosion resistance, and a perfect fit for the oil passage holes of LSX and LT series engines ranging from 4.8L to 6.2L. The package includes ten plugs—eight for primary use and two spares—ensuring complete coverage for all oil passages. Dimensions are compact at 2.68 x 1.97 x 0.55 inches, weighing only 1.44 ounces, making storage and handling effortless.
Usage
These plugs are ideal for automotive technicians, performance enthusiasts, and DIY owners who need to seal oil passages on 2008‑2023 GM engines such as LS1, LS2, LS3, LS7, L83, LT1, LT4, and LT5. Installation is straightforward: tap the plug into the oil pipe hole until it seats securely, then use the 4mm × 9 thread on the top for future removal if needed. The product excels in scenarios where oil pressure leaks can compromise engine performance, especially after engine swaps or when DOD systems are disabled.

Why Choose Us
OywhC combines rigorous testing with premium materials to deliver a plug that maintains a hermetic seal under high temperature and pressure conditions. Our stainless steel alloy resists rust and wear, guaranteeing longevity even in demanding environments. Each plug undergoes strict quality control, and the set includes spare units to address any unforeseen replacements, providing peace of mind for both professionals and hobbyists.
Key Features
- Premium stainless steel alloy for superior durability and corrosion resistance
- Specifically engineered for non‑DOD GM LSX and LT engines (2008‑2023)
- Easy tap‑in installation with threaded top for optional removal
- Pack of 10 plugs – 8 for installation, 2 spares for future needs
- Compact size and lightweight design for effortless handling
FAQ
Which GM engine models are compatible?
The plugs fit LS1, LS2, LS3, LS7, L83, LT1, LT4, LT5 and other LSX/LT series engines from 2008 to 2023 that do not use DOD technology.
How do I install the plug?
Simply tap the plug into the oil pipe hole until it seats fully. The top features a 4mm × 9 thread for easy removal if service is required later.
Can the plug be removed after installation?
Yes, the threaded top allows you to unscrew the plug with a compatible tool, making maintenance straightforward.
What is included in the package?
The set contains ten stainless steel plugs – eight for immediate installation and two extra as spares.
Is the stainless steel material safe for high‑temperature engine environments?
Absolutely. Our stainless steel alloy is selected for its high heat tolerance and resistance to oil‑induced corrosion, ensuring reliable performance over the engine’s lifespan.




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