Includes: 8pcs Hydraulic Lifters,100% brand new and are made by the original OEM manufacturer, High quality guaranteed. Made of high quality alloy steel, wear-resistant, corrosion-resistant, and long service life Replace Part: REPLACE 12499225, JB-2079,12576400, 12648846, 17109057, 17120090, 17120735, 17121905, 25341990. Please refer to the "amazon confirmed fit" tool at the top of the page to see if the parts fits your car Fits: This Lifter Kit Compatible with 1998 to 2020 4.8L 5.3L 5.7L 6.0L 6.2L V6 V8 Engines. Compatible with Bu-ickAll-ure/LaCro-sse/Rai-nier/Cen-tury/Ave-nue, CadillacAlla-nte/Broug-ham/CTS/Devi-lle/Eldo-rado/Esca-lade/Fleet-wood/Sevi-lle, Chev-roletTrail-blazer/Bla-zer/Camaro/Ca-price/Corve-tte/Exp-ress/Lu-mina/Silve-rado/SS/L-CF/Color-ado/ Sono-ra, G-MCSubu-rban/Can-yon/En-voy/Caba-llero/Sycl-one/Sav-ana/Sie-rra /Yu-kon, and more detailed vehicle adaptation information please see below Function: The hydraulic tappet is a device used to maintain zero valve clearance in an internal combustion engine by Oil pressure. It keeps valves healthy and reduces valve train noise from startup to shutdown. Close tolerance for low leak-down rates. Fast pump-up and superior high RPM performance Premium Support: We focus on product quality and customer service, our customer service is top-notch. If you have any difficulties or needs, please contact us at any time. EPCHUNMI, with over 20 years of experience, has become a full line provider of Domestic , European and Japanese engine parts for all cars ,and offers listings of all engines.It is associated with manufacturers who are certified with IATF16949, and with the prestigious IATF16949 certificate.