{"product_id":"oywhc-oil-valley-block-off-plugs-for-gm-lsx-lt-engines-set-of-10-stainless-steel-service-thread","title":"OywhC Oil-Valley Block-Off Plugs for GM LSX\/LT Engines — Set of 10 Stainless Steel, Service Thread","description":"\u003cp\u003e\u003cstrong\u003eOywhC Oil Valley block off plugs are stainless steel inserts designed to seal oil passages on non‑DOD\/AFM GM LSX and LT engines (2008–2023), sold as a set of 10 with two spares.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese precision plugs stop unwanted oil flow where modern displacement‑control systems are not present, letting builders, swap installers, and engine reprofilers restore correct oil routing and pressure on a range of GM small‑block V8s. Machined from corrosion‑resistant stainless steel, each plug combines durability with an accessible service thread for removal, making them suitable for long‑term installations and later maintenance or reversal.\u003c\/p\u003e\n\n\u003ch3\u003eWhich GM engines and years will these plugs work with?\u003c\/h3\u003e\n\n\u003cp\u003eThese plugs were engineered for GM LSX and LT series engines that do not include DOD\/AFM systems. They cover common displacements and modern variants across multiple model years.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFits LSX and LT family engines: 4.8L, 5.3L, 6.0L, 6.2L and similar variants.\u003c\/li\u003e\n  \u003cli\u003eCompatible with many LS1–LS7 and L8x\/LTx variants when DOD\/AFM is not present.\u003c\/li\u003e\n  \u003cli\u003eIntended for 2008–2023 GM engine platforms where oil‑valley block‑off is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these plugs install and allow future removal?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward: the plug is gently tapped into an oil passage bore until seated, and a top service thread facilitates later extraction. No specialized tools are required for initial installation, but a careful fit and mild tapping ensure a secure seal.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSeat by gently tapping into the oil‑valley bore until flush with the block.\u003c\/li\u003e\n  \u003cli\u003e4mm × 9 service thread at the top makes removal and maintenance easy.\u003c\/li\u003e\n  \u003cli\u003eTwo extra plugs are included as spares or for trial fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and durability can I expect?\u003c\/h3\u003e\n\n\u003cp\u003eEach plug is CNC‑finished from a stainless steel alloy chosen to resist corrosion and hold up under typical engine bay conditions. Their strength supports repeated install\/removal cycles without deformation or galling when handled properly.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh‑grade stainless steel resists rust and chemical exposure.\u003c\/li\u003e\n  \u003cli\u003ePrecision machining provides consistent sealing geometry.\u003c\/li\u003e\n  \u003cli\u003eRated for long‑term use in typical automotive engine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow many do I need and what does the set include?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit supplies ten plugs so you have the correct count for a single engine plus spares. Typically eight plugs are required to seal all oil‑valley passages on most LSX\/LT engines; the remaining two are kept as backups or for test fitting.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSet of 10 plugs — enough to install eight and keep two replacements.\u003c\/li\u003e\n  \u003cli\u003eDesigned to meet or exceed common industry fitment standards after testing.\u003c\/li\u003e\n  \u003cli\u003ePackaged for easy inventory and garage use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: this OywhC set is aimed at automotive technicians, engine builders, hobbyists doing cylinder deactivation deletions or motor swaps, and anyone who needs a reliable, serviceable solution to plug unused oil passages on non‑DOD\/AFM GM LSX and LT engines. If you’re restoring, modifying, or simplifying oil systems on a compatible GM V8, these stainless steel block‑off plugs provide a durable, maintenance‑friendly option.\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 engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. These plugs are intended for GM engines without DOD\/AFM systems; they are not designed for engines that use active displacement control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to remove the plugs later?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools are required; the 4mm×9 top thread accepts common extractor hardware for straightforward removal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OywhC","offers":[{"title":"Default Title","offer_id":55165577396567,"sku":"B0DNTPTF8R","price":32.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/oywhc-front-view-packaging.jpg?v=1790355947","url":"https:\/\/britishgarage.co.uk\/products\/oywhc-oil-valley-block-off-plugs-for-gm-lsx-lt-engines-set-of-10-stainless-steel-service-thread","provider":"British Garage","version":"1.0","type":"link"}