{"product_id":"oywhc-engine-oil-valley-block-off-plugs-for-non-afm-gm-lsx-lt-engines-stainless-steel-set-of-10-fits-2008-2023","title":"OywhC Engine Oil Valley Block-Off Plugs for Non-AFM GM LSX \u0026 LT Engines — Stainless Steel Set of 10, Fits 2008–2023","description":"\u003cp\u003e\u003cstrong\u003eOywhC Oil Valley Block Off Plugs are stainless-steel seals designed to permanently close oil passages on non-DOD\/AFM GM LSX and LT engines (2008–2023), protecting oil pressure and simplifying engine swaps or conversions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese oil valley plugs fit a wide range of GM V8 platforms — including LS1, LS2, LS3, LS7, L83 and LT-series motors — that do not use Displacement on Demand\/AFM systems. Built from corrosion-resistant stainless steel, the ten-piece kit supplies enough plugs for one engine with two extras for spares or future maintenance. They’re intended for mechanical sealing of unused oil galleries during conversions, repair work, or when disabling AFM\/DOD components, and install with simple tapping and an integrated removal thread.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and model years work with these plugs?\u003c\/h3\u003e\n\n\u003cp\u003eThese plugs are engineered for GM V8 engines from model years 2008 through 2023 that lack AFM\/DOD systems. They cover both classic LSX variations and the newer LT family, matching the common oil gallery sizes used across those blocks.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with LS1, LS2, LS3, LS7 and modern L83, LT1, LT4, LT5\u003c\/li\u003e\n  \u003cli\u003eFits 4.8L, 5.3L, 6.0L and 6.2L non-DOD\/AFM engines\u003c\/li\u003e\n  \u003cli\u003eIntended for blocks used in swaps, rebuilds, or AFM deletion jobs\u003c\/li\u003e\n  \u003cli\u003eNot for engines that require original DOD\/AFM components to function\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install the oil valley block off plugs?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward: each plug is gently driven into the oil gallery hole until seated. A 4mm × 9mm threaded recess on the top allows later removal with a standard fastener if service or modification is needed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSeat plugs by tapping evenly until flush with the oil valley surface\u003c\/li\u003e\n  \u003cli\u003eUse the 4mm × 9 thread for extraction or repositioning during maintenance\u003c\/li\u003e\n  \u003cli\u003eApply light thread locker or sealant only if extra security is desired\u003c\/li\u003e\n  \u003cli\u003eFollow torque and clearance practices for surrounding components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the material and durability details?\u003c\/h3\u003e\n\n\u003cp\u003eManufactured from a stainless-steel alloy, these plugs resist corrosion and mechanical wear common in engine compartments. Their robust construction helps maintain a reliable oil seal even under heat and vibration, reducing the risk of leaks where oil galleries are no longer in use.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh-strength stainless steel resists rust and pitting\u003c\/li\u003e\n  \u003cli\u003eDurable against thermal cycles and engine vibration\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined to provide a snug, repeatable fit\u003c\/li\u003e\n  \u003cli\u003eKit contains 10 plugs: 8 required per engine plus 2 spares\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these plugs affect oil pressure or engine operation?\u003c\/h3\u003e\n\n\u003cp\u003eWhen used on engines that do not require DOD\/AFM oil passages, the plugs merely close unused galleries and have no adverse effect on normal oiling systems. They are not a substitute for repairs on engines that need the original AFM\/DOD plumbing to operate correctly.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSeal unused passages to prevent oil leaks and pressure loss\u003c\/li\u003e\n  \u003cli\u003eDo not alter active oiling circuits when applied correctly\u003c\/li\u003e\n  \u003cli\u003eNot suitable for engines that depend on AFM\/DOD passages for function\u003c\/li\u003e\n  \u003cli\u003eAlways verify engine configuration before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This OywhC kit is aimed at mechanics, engine builders, and DIY enthusiasts performing LSX or LT engine swaps, AFM\/DOD deletions, or restorations where oil galleries must be sealed. It’s a practical choice for anyone needing durable, corrosion-resistant plugs that are simple to install and serviceable without specialized tools.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these plugs compatible with AFM\/DOD-equipped engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. These plugs are designed for engines without AFM\/DOD systems; do not use where AFM\/DOD oil passages are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many plugs do I need per engine and does the kit include spares?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most engines require eight plugs; the OywhC kit includes ten total, giving two spares for maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OywhC","offers":[{"title":"Default Title","offer_id":48084384415902,"sku":"B0DNTPTF8R","price":31.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/oywhc-front-packaging-oil-valley-plugs.jpg?v=1785852827","url":"https:\/\/northtrailauto.ca\/products\/oywhc-engine-oil-valley-block-off-plugs-for-non-afm-gm-lsx-lt-engines-stainless-steel-set-of-10-fits-2008-2023","provider":"North Trail Auto","version":"1.0","type":"link"}