{"product_id":"delphi-ls7-lifter-set-with-guide-trays-direct-fit-for-gm-ls-engines","title":"Delphi LS7 Lifter Set with Guide Trays - Direct Fit for GM LS Engines","description":"\u003cp\u003eIn this review the Michigan Motorsports Delphi LS7 lifter set is evaluated as a practical replacement for worn lifters in GM LS platforms. The package includes 16 Delphi LS7 hydraulic roller lifters and 4 OEM-quality guide trays, making it a straightforward swap for engines using factory lifter guides. The single biggest reason to buy is value: Michigan Motorsports purchases these Delphi lifters in volume to offer a lower price while providing direct replacements for GM part numbers 12499225 and 25341990, which simplifies rebuilds and valvetrain refreshes.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete OEM-style kit:\u003c\/strong\u003e Includes 16 hydraulic roller lifters and 4 guide trays so you get a full set for a V8 without hunting parts separately.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDirect replacement fit:\u003c\/strong\u003e Matches GM part numbers 12499225 and 25341990 to ensure compatibility with factory lifter guides and correct alignment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide engine compatibility:\u003c\/strong\u003e Designed for popular LS platforms including LS1, LS2, LS3, LS6, LQ4, LQ9, LY5, LY6 and LM7 for many 4.8L to 6.2L engines.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHydraulic roller design:\u003c\/strong\u003e Optimized for hydraulic roller camshafts to maintain proper valve operation with stock and upgraded cam profiles.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCost-conscious sourcing:\u003c\/strong\u003e Bought in large quantities by Michigan Motorsports to deliver a competitive price while providing OEM-quality components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis lifter set is best for DIY mechanics, shop technicians, and enthusiasts performing a full valvetrain refresh or rebuilding a GM LS V8 where the original lifters are worn or noisy. It suits owners doing camshaft upgrades who need hydraulic roller lifters that fit factory guides and want a complete 16-piece set with guide trays included.\u003c\/p\u003e\n\u003cp\u003eThose restoring high-performance engines that demand aftermarket specialty lifters with exotic coatings or race-spec clearance should look elsewhere; this kit is a direct replacement OEM-style product focused on fit and value rather than race-only tolerances or custom lifter geometry.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eOEM-quality Delphi construction provides reliable fit and consistent operation in compatible LS engines.\u003c\/li\u003e\n \u003cli\u003eIncludes guide trays so installation is simplified and parts are matched as a set.\u003c\/li\u003e\n \u003cli\u003eExcellent value due to volume purchasing, making a full set affordable for rebuilds or swaps.\u003c\/li\u003e\n \u003cli\u003eDirect replacement for common GM part numbers reduces fitment questions during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSome customers report mixed comments about noise level, so lifter noise may vary by engine condition.\u003c\/li\u003e\n \u003cli\u003eA small number of reports mention concerns tied to engine condition after installation, so inspect related components before fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMichigan Motorsports (Delphi parts)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIncluded items\u003c\/td\u003e\n\u003ctd\u003e16 Delphi LS7 hydraulic roller lifters, 4 lifter guide trays\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eReplaces GM part numbers\u003c\/td\u003e\n\u003ctd\u003e12499225 and 25341990\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible engines\u003c\/td\u003e\n\u003ctd\u003eLS1, LS2, LS3, LS6, LQ4, LQ9, LY5, LY6, LM7 and other LS-based 4.8L-6.2L engines\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHydraulic roller camshaft valvetrain replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePackage quantity\u003c\/td\u003e\n\u003ctd\u003eSet of 16 lifters with 4 guide trays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Delphi LS7 lifter set from Michigan Motorsports is a sensible, cost-effective choice for anyone needing a full OEM-style lifter replacement on GM LS V8 engines. It provides correct fitment for the listed GM part numbers and includes guide trays for a clean installation, making it good value for rebuilds and swaps while remaining a practical option for cam upgrades that retain hydraulic roller operation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these lifters a direct fit for LS truck engines?\u003c\/strong\u003e\u003cbr\u003eYes, they replace GM part numbers 12499225 and 25341990 and are compatible with LQ4\/LQ9 and other LS-based 4.8L-6.2L engines that use Delphi LS7-style lifters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the guide trays come with the lifters?\u003c\/strong\u003e\u003cbr\u003eYes, the set includes four OEM-quality guide trays packaged with the 16 lifters for a complete installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these lifters reduce valvetrain noise?\u003c\/strong\u003e\u003cbr\u003eThey are OEM-quality replacements and can restore proper operation, but customers have reported mixed noise levels depending on engine condition, so inspect pushrods, rocker arms and the cam before assuming lifters are the only cause.\u003c\/p\u003e","brand":"Michigan Motorsports","offers":[{"title":"Default Title","offer_id":48662919774427,"sku":"B07G8M28BG","price":209.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61-2dXYIWwL._AC_SL1500.jpg?v=1778629991","url":"https:\/\/gearmusthave.com\/products\/delphi-ls7-lifter-set-with-guide-trays-direct-fit-for-gm-ls-engines","provider":"GearMustHave","version":"1.0","type":"link"}