Woosphy 16 Pcs Hydraulic Roller lifters Valve Lifter

Woosphy 16 Pcs Hydraulic Roller lifters Valve Lifter Compatible with GM Chevy Silverado Cadillac Buick GMC Pontiac LS1 LS2 LS7 LS3 LQ4 LQ9 HL124 4.8L 5.3L 5.7L 6.0L 6.2L 12499225 17122490

Part OEM Number: 17122490 17120735 17121905 12499225 25349994 12564012 12576400 HL124 H124 H128 12639516 12571595 12569256 12619820 12632143 17122490 12645725 12680871 HL178 HL177 HL7011S HT-2303
Replacement for Chevy GMC Buick Cadillac,fit for 4.3L 5.3L 6.0L 6.2L Engines with AFM 2007-2021
Replacement for Chevy Avalanche Caprice Express Impala Silverado Tahoe
Replacement for GMC Savana Sierra Yukon.
Replacement for Buick Allure Lacrosse, Cadillac Escalade, Pontiac G8

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Signs of Faulty Valve Lifters

The most obvious symptom of a faulty hydraulic lifter is the noise it creates in your car's engine. You can usually distinguish the faulty lifter by the distinct sound. Instead of a knock or ping, a faulty hydraulic lifter will usually make a sound more reminiscent of a tapping sound. The tapping will be quick in rhythm and may occur when the vehicle is cold or hot, depending on what the problem with the hydraulic lifter is. The lifter may be having problems with a sticking check valve, dirt, wear or other problems.

These Hydraulic Lifters fit for:

LS1, LS2, LS3, LS6, LS7, LS9 LSX Engines

2008 – 2009 Buick Allure
2008 – 2009 Buick LaCrosse
2005 – 2007 Buick Rainier
2005 – 2008 Pontiac Grand Prix
2008 – 2009 Pontiac G8
2016 – 2016 Cadillac CTS
2007 – 2016 Cadillac Escalade
2007 – 2015 Cadillac Escalade ESV

17122490, 17120735, 17121905, 12499225, 25349994
12564012, 12576400, HL124, H124, H128, HT-2148
JB-2079, HL-2148S, A2148, B2148, 850-16, 10530-16, HL124-16K
77081-61416, 91113, 12639516, 12571595, 12569256
12619820, 12632143, 17122490, 12645725
12680871, HL178, HL177, HL7011S, HT-2303

2007 – 2013 Cadillac Escalade EXT
2014 – 2015 Chevrolet Silverado 1500
2007 – 2013 Chevrolet Avalanche
2006 – 2009 Chevrolet Impala
2006 – 2007 Chevrolet Monte Carlo
2007 – 2015 Chevrolet Silverado 1500
2015 – 2016 Chevrolet Suburban
2007 – 2014 Chevrolet Suburban 1500

2007 – 2016 Chevrolet Tahoe
2006 – 2008 Chevrolet Trailblazer
2005 – 2006 Chevrolet Trailblazer EXT
2007 – 2009 Chevrolet Avalanche
2011 – 2015 Chevrolet Caprice
2007 – 2013 Chevrolet Silverado 1500
2007 – 2009 Chevrolet Suburban 1500
2010 – 2015 Chevrolet Camaro
2014 – 2015 Chevrolet Corvette

2014 – 2016 Chevrolet Silverado 1500
2008 – 2008 Chevrolet Tahoe
2014 – 2015 GMC Sierra 1500
2005 – 2009 GMC Envoy
2005 – 2006 GMC Envoy XL
2007 – 2015 GMC Sierra 1500
2007 – 2015 GMC Yukon
2015 – 2015 GMC Yukon XL
2007 – 2014 GMC Yukon XL 1500
2007 – 2013 GMC Sierra 1500

2008 – 2013 GMC Yukon
2007 – 2009 GMC Yukon XL 1500
2008 – 2010 GMC Sierra
2007 – 2007 GMC Sierra 1500
2014 – 2015 GMC Sierra 1500
2007 – 2007 GMC Yukon
2010 – 2015 GMC Yukon
2015 – 2016 GMC Yukon XL
2007 – 2007 GMC Yukon XL 1500
2010 – 2014 GMC Yukon XL 1500

Using Hydraulic Lifters

When you operate a hydraulic lifter, the engine pushes down on the camshaft. The camshaft in turn exerts pressure on the lifter, and particularly a small plunger attached to a metal spring. At the same time, oil travels to the lifter, and pressure within it causes the plunger to move upward. The lifter is pushed forward, and resistance to this pushes it back. This spring then pushes back against the plunger, creating the lift effect which helps to absorb shock.

Mechanics of a Hydraulic Roller Lifter

The roller lifter has a small metal ball fitted to the base of the lifter. As the lifter is touched by the camshaft, this ball turns. This rolling ball helps to remove some of the friction between the lifter mechanism and the camshaft. The ball helps to reduce the shock absorbed by the plunger. Hydraulic roller lifters are often paired with high-performance vehicles, as these have aggressive camshafts that could wear down an ordinary hydraulic lifter.