{"product_id":"btr-brian-tooley-racing-delphi-ls7-hydraulic-roller-lifters-kit-16-lifters-4-guide-trays-oem-12499225-equivalent-for-gen3-gen","title":"BTR Brian Tooley Racing Delphi LS7 Hydraulic Roller Lifters Kit — 16 Lifters + 4 Guide Trays, OEM 12499225 Equivalent for Gen3\/Gen","description":"\u003cstrong\u003eBTR Brian Tooley Racing Delphi LS7 hydraulic roller lifters and guide trays—complete 16-lifter and 4-tray set engineered to replace GM OEM 12499225 for non-DOD Gen 3\/Gen 4 LS and Gen 5 LT engines.\u003c\/strong\u003e\n\n\u003cp\u003eThis kit supplies genuine Delphi hydraulic roller lifters and guide trays in a full replacement package for a wide range of Chevrolet small-block applications. Designed as BTR's equivalent to GM part number 12499225, the set fits many LS and LT engine families and is intended for non-Displacement on Demand (non-DOD) cylinder heads that originally used hydraulic roller lifters. The components arrive ready to install and are suitable for engine rebuilds, swaps, or routine maintenance where OEM-style hydraulic lifter performance is required.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and vehicle platforms are compatible with this lifter set?\u003c\/h3\u003e\n\u003cp\u003eThese lifters and guide trays fit many GM small-block families. They work with Gen 3 and Gen 4 LS engines as well as Gen 5 LT engines, provided the application originally used hydraulic roller lifters and is non-DOD.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible engine codes: LS1, LS2, LS3, LS6, LS7, LM7, LQ4, LQ9, L83, L86, and LT1\u003c\/li\u003e\n  \u003cli\u003eSupported displacements include 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L\u003c\/li\u003e\n  \u003cli\u003eIntended for non-Displacement on Demand (non-DOD) cylinder heads only\u003c\/li\u003e\n  \u003cli\u003eBTR equivalent to GM OEM 12499225 for straightforward part substitution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the kit include and how does it simplify an engine rebuild?\u003c\/h3\u003e\n\u003cp\u003eThe package contains a full complement of lifters plus guide trays, eliminating the need to source multiple components separately. Using a matched set reduces variability and helps ensure even valvetrain operation after installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne set of 16 Delphi hydraulic roller lifters (complete set for V8)\u003c\/li\u003e\n  \u003cli\u003eFour guide trays that hold lifters in proper orientation during assembly\u003c\/li\u003e\n  \u003cli\u003eSupplied as a direct-replacement BTR\/Delphi assembly for faster rebuilds\u003c\/li\u003e\n  \u003cli\u003eIdeal when replacing worn lifters, correcting noisy valvetrains, or refreshing a long-running engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these hydraulic roller lifters perform compared to OEM parts?\u003c\/h3\u003e\n\u003cp\u003eThese are genuine Delphi hydraulic roller lifters matched to BTR’s specification and intended to meet OEM form, fit, and function. Expect lifter geometry and hydraulic response designed to mirror factory behavior for reliable operation in stock and mildly modified engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDelphi manufactured components for consistent hydraulic action and roller contact\u003c\/li\u003e\n  \u003cli\u003eDesigned to match OEM dimensions and tolerances for reliable valve actuation\u003c\/li\u003e\n  \u003cli\u003eSuitable for engines retained in stock valvetrain configurations or mild performance upgrades\u003c\/li\u003e\n  \u003cli\u003eNot intended for solid lifter conversions or high-lift, high-RPM race cams that require custom valvetrain components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there installation or compatibility cautions I should know about?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires the engine to be non-DOD and originally configured with hydraulic roller lifters; using these in DOD-specific or incompatible heads can cause fitment or functional problems. Always follow torque, break-in, and oiling recommendations during assembly to protect hydraulic elements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not install in Displacement on Demand (DOD) cylinder heads or systems\u003c\/li\u003e\n  \u003cli\u003eVerify lifter bores and pushrod lengths before final assembly\u003c\/li\u003e\n  \u003cli\u003ePrime oil passages and follow manufacturer break-in procedures for lifters\u003c\/li\u003e\n  \u003cli\u003eCheck camshaft and spring compatibility if the engine has been modified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This BTR Delphi LS7 lifter and tray set is aimed at mechanics, engine builders, and enthusiasts restoring or repairing GM small-block LS and LT engines that originally used hydraulic roller lifters and are non-DOD. It’s a practical choice for complete valve-train refreshes, rebuilds, or direct OEM-style replacements when you want genuine Delphi hardware matched to BTR quality and GM fitment.\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: Will these lifters work in any LT1 engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit LT1 engines that originally used hydraulic roller lifters and are non-DOD; verify your engine is non-Displacement on Demand first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these suitable for high-performance camshafts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They match OEM hydraulic characteristics and are best for stock or mildly modified cams, not extreme race solid-lifter setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BTR Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":48081435132062,"sku":"B0C5Y39CJH","price":376.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/btr-delphi-lifters-front-packaging.jpg?v=1785804343","url":"https:\/\/northtrailauto.ca\/products\/btr-brian-tooley-racing-delphi-ls7-hydraulic-roller-lifters-kit-16-lifters-4-guide-trays-oem-12499225-equivalent-for-gen3-gen","provider":"North Trail Auto","version":"1.0","type":"link"}