WEELBIN 8pcs Active Fuel Management AF-M DOD Valve Lifters For Chevy GMC 5.3L/6.0L/6.2L

8pcs Active Fuel Management AF-M DOD Valve Lifters For Chevy GMC 5.3L/6.0L/6.2L Feature:The main function of valve Lifters is to convert the rotary motion of cams into reciprocating motion. The camshaft of the engine with this structure is not set on the top of the engineThe valve lifters uses hydraulic force to adjust the clearance. Hydraulic tappet mainly consists of plunger, one-way valve and one-way valve spring. By using the function of one-way valve to store or release oil, the working length of hydraulic tappet can be changed by changing the oil pressure in the tappet body cavity, so as to automatically adjust the valve clearanceReplace part number For reference : HT-2303,12569256, 12571595, 12639516, 12645725,12619820,HL177, HL178, HL7011SHigh quality,You must order 2 if a full set is neededProfessional installation in highly recommended (No instruction included)​​ Item specifics:Condition:New Fitment Type: Direct ReplacementManufacturer Part Number:12569256, 12571595, 12639516, 12619820, 12645725Interchange Part Number:HT-2303, HL177, HL178, HL7011S Fits:For Buick Allure 2008-2009For Buick Lacrosse 2008-2009For Buick Rainier 2005-2007For Cadillac Escalade 2007-2012For Chevy Avalanche 2007-2013For Chevy Camaro 2010-2012For Chevy Caprice 2011-2013For Chevy Impala 2006-2009For Chevy Monte Carlo 2006-2007For Chevy Silverado 1500 2007-2013For Chevy Suburban 2007-2013For Chevy Tahoe 2007-2013For Chevy Trailblazer 2005-2008For GMC Envoy 2005-2009For GMC Sierra 1500 2007-2013For GMC Yukon 2007-2013For GMC Yukon Denali 2007-2008, 2010-2012For Pontiac G8 2008-2009For Pontiac Grand Prix 2006-2008For Saa-b 9-7X 2006-2009 The Package Include:8 pcs Lifters Note: Due to the transportation process, the AFM Lifters are not filled with oil or not filled with much oil.You need to fill them yourself or ask a professional for help.After oil filling and installation, let it idle for 20 minutes first. If there is noise in the process, it doesn't matter. There will be no noise after 20 minutes.If you have any problems, please feel free to contact us

The main function of valve Lifters is to convert the rotary motion of cams into reciprocating motion. The camshaft of the engine with this structur