Vehicle Compatibility (For GM 5.3L AFM/DOD V8 Engines ONLY):
(Fitment Note: Strictly fits GM 5.3L V8 engines equipped with Active Fuel Management (AFM). Please verify your exact year, model, and engine code before purchasing.)
Compatible Vehicles for Chevrolet (5.3L AFM V8):
2007-2013 Chevrolet Silverado 1500 / Avalanche (5.3L)
2007-2014 Chevrolet Tahoe / Suburban 1500 (5.3L)
2005-2006 Chevrolet Trailblazer EXT (5.3L)
2007-2008 Chevrolet Trailblazer (5.3L)
Compatible Vehicles for GMC & Others (5.3L AFM V8):
2005-2013 GMC Sierra 1500 (5.3L)
2008-2014 GMC Yukon (5.3L) / 2007-2014 GMC Yukon XL 1500 (5.3L)
2005-2009 GMC Envoy XL (5.3L) / 2007-2009 GMC Envoy (5.3L)
2005 GMC Envoy XUV (5.3L)
2007 Buick Rainier (5.3L)
2005-2006 Isuzu Ascender (5.3L)
2007-2009 Saab 9-7x (5.3L)
Interchange/OE Part Numbers: 12499225, 12575925, HS26191PT, TCS45993, ES72220, 12571596, 12571608.
Shipping & Package Specifications:
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Item Weight: 15.00 pounds
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Package Dimensions: 24.0 x 14.0 x 5.0 inches (Flat-packed to protect MLS integrity)
What's Included in the Package List:
- 8x AFM (Active Fuel Management) Hydraulic Roller Lifters
- 8x Non-AFM Hydraulic Roller Lifters
- 4x Lifter Guide Trays (with bolts)
- 2x Multi-Layer Steel (MLS) Cylinder Head Gaskets (Left & Right)
- 1x Complete Cylinder Head Bolt Set (30 Pcs Total: 20 Long 100mm, 10 Small 45mm)
- 2x Valve Cover Gaskets
- 1x Upper Intake Manifold Gasket Set (Aluminum)
- 2x Exhaust Manifold Gaskets
- 1x Front Camshaft Seal
- Complete set of Valve Stem Seals
- Complete assortment of necessary O-rings and smaller top-end engine seals
Permanently Fix AFM Lifter Tick & Misfires: Ultimate Master Top-End Rebuild Kit with Lifters & MLS Gaskets for GM 5.3L V8
Are you dealing with a loud, rhythmic tapping noise under your hood, engine misfires (DTC codes like P0300), or a rough idle? These are classic, infamous warning signs of collapsed Active Fuel Management (AFM) / Displacement on Demand (DOD) lifters in your GM 5.3L V8. When an AFM lifter fails, it can damage your camshaft, reduce cylinder compression, and cause severe drivability issues. Tearing down the top end of a pushrod V8 is a labor-intensive project. Eliminate these notorious valvetrain failures once and for all with this Ultimate Master Overhaul Kit. Engineered strictly for 2005-2014 GM 5.3L AFM-equipped V8 engines, this high-value, comprehensive rebuild package provides every premium component required for a safe, permanent, and professional top-end restoration.
Sourcing high-performance lifters, matching lifter trays, multi-layer head gaskets, and specialized structural fasteners separately is not only a frustrating hassle but also incredibly expensive. This premium master overhaul package maximizes the value of your labor by bundling a complete set of 16 premium hydraulic roller lifters (8 AFM-spec and 8 Non-AFM spec) alongside 4 heavy-duty lifter guide trays with mounting bolts. To guarantee a perfect, blowout-proof seal that restores factory-level compression, the kit features premium Multi-Layer Steel (MLS) head gaskets and a complete 30-piece set of brand-new Torque-to-Yield (TTY) cylinder head bolts. Our MLS gaskets are meticulously flat-packed to protect their rigid, precision-layered structure during transit, ensuring they easily handle intense operating temperatures and combustion pressures.
Key Features & Included Components:
Complete Hydraulic Roller Lifter Set: Includes 8x premium AFM (Active Fuel Management) and 8x Non-AFM hydraulic roller lifters designed to restore smooth, quiet, and reliable valvetrain operation.
Heavy-Duty Lifter Trays: Features 4x brand-new, high-strength lifter guide trays with new mounting bolts to prevent lifter rotation and ensure perfect alignment.
Premium MLS Head Gaskets: Includes Left and Right Multi-Layer Steel (MLS) cylinder head gaskets engineered to withstand extreme heat and prevent future pressure or coolant blowouts.
Complete 30-Piece TTY Bolt Set: Features a full set of 30 brand-new Torque-to-Yield (TTY) cylinder head bolts (20x 100mm Long Bolts, 10x 45mm Small Bolts) built to strict ES72220 structural specifications for permanent clamping force across the block deck.
Full Top-End Reseal Gaskets: Comes complete with 2x valve cover gaskets, a premium upper intake manifold gasket set (aluminum carrier spec), heavy-duty exhaust manifold gaskets, and a fresh front camshaft seal to completely stop stubborn oil and vacuum leaks.
Valvetrain Sealing Essentials: Equipped with a complete set of premium valve stem seals to fix high-mileage oil consumption, along with a comprehensive assortment of necessary O-rings and smaller top-end engine seals.
(⚠️ CRITICAL FITMENT NOTE: This master overhaul kit is engineered STRICTLY for specific 2005-2014 GM 5.3L V8 engines equipped with Active Fuel Management (AFM) / Displacement on Demand (DOD). It DOES NOT fit Non-AFM engines or other displacement variants. Please carefully verify your vehicle's exact year, model, engine code, and AFM configuration before purchasing to ensure proper fitment.)
Free standard U.S. shipping
Eligible orders ship free to physical street addresses in the contiguous 48 states and Washington, DC. Orders normally process within 1 business day; transit is estimated at 3–5 business days, for 4–6 business days total after ordering. Business days exclude weekends and U.S. public holidays. Delivery estimates are not guaranteed. Alaska, Hawaii, U.S. territories, international destinations, P.O. Boxes and APO/FPO addresses are not supported.
Fulfillment and tracking
Eligible orders are fulfilled through Amazon Multi-Channel Fulfillment (MCF). BTSCAR remains the seller and handles customer service. Tracking is emailed after dispatch.
30-day returns and exchanges
Request an eligible return within 30 days of delivery. Standard returns must be new, unused, uninstalled and complete with original packaging. BTSCAR supplies a free prepaid return label, including for eligible change-of-mind returns, and charges no restocking fee. Contact support@btscar-us.com for authorization before returning anything; use only our label and instructions.
Refunds
After an eligible return is received and inspected, the refund is issued to the original payment method within 7 days. Bank posting times may be longer.
Full policies: https://btscar-us.com/policies/shipping-policy and https://btscar-us.com/policies/refund-policy
12-month limited warranty
Eligible products purchased directly from btscar-us.com are covered for 12 months from delivery against verified defects in materials or workmanship under normal automotive use.
Installed products
Installation does not automatically void warranty coverage. Installed items are not eligible for standard returns, but covered defects may qualify for warranty service. Incorrect installation, inadequate lubrication, contamination, overheating, misuse, racing, modifications and normal wear are excluded. Labor, diagnosis, towing and consequential expenses are excluded to the extent permitted by law. Statutory consumer rights remain unaffected.
Claim support
Email support@btscar-us.com with your order number, product or SKU, vehicle details and a description with photos or video. We may request reasonable installation or diagnostic information. Approved claims may receive replacement parts, an equivalent replacement, or a refund if no suitable replacement is available. We provide a prepaid label when an approved warranty item must be returned. Wait for our instructions before shipping.
Customer service
Phone / WhatsApp: +86 158 1943 1912. Daily, 10:00 AM–10:00 PM (GMT+8). We aim to respond within 24 hours; this is a target, not a guarantee.
Full warranty: https://btscar-us.com/pages/warranty-policy
