Set of 16 Active Fuel Management AFM DOD Valve Lifter For Chevy GM 5.3/6.0/6.2L
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Item Description:
Autoparts-Accs Set of 16 Active Fuel Management AFM DOD Valve Lifter For Chevy GM 5.3/6.0/6.2L
👀 [Hydraulic Valve Lifter] The valve clearance is adjusted hydraulically, eliminating the need for adjusting screws and nuts, and reducing engine noise.
👀 [Fitment] Compatible with Chevrolet GMC Buick Cadillac GM 4.8L 5.3L 6.0L 6.2L 2007-2012.Fit For ALLURE ESCALADE AVALANCHE CAMARO SILVERADO SUBURBAN TAHOE SAVANA SIERRA YUKON.
👀 [Compatible with GM] Replaces 12569256, 12571595, 12632143, 12619820, 12639516, 12645725, 12680871, 17122490, 17120735, 12499225, 12576400, 12648846, 25341990, 5235498, 5234890, 5234670, 5233745, 17121905, 17120090, 17089852, 5234660, 17109057.
👀 [Installation]Instructions not included. Professional installation is recommended. When installing, please ensure that the valve tappet is filled with No. 68 hydraulic oil.(pre-added in the lifters).
👀 [Complete Set] 8x AFM Lifters, 8x Roller Lifters. This is a set of valve lifters (enough for one bank) required for AFM V-8 engines
👀 [Fitment] Compatible with Chevrolet GMC Buick Cadillac GM 4.8L 5.3L 6.0L 6.2L 2007-2012.Fit For ALLURE ESCALADE AVALANCHE CAMARO SILVERADO SUBURBAN TAHOE SAVANA SIERRA YUKON.
👀 [Compatible with GM] Replaces 12569256, 12571595, 12632143, 12619820, 12639516, 12645725, 12680871, 17122490, 17120735, 12499225, 12576400, 12648846, 25341990, 5235498, 5234890, 5234670, 5233745, 17121905, 17120090, 17089852, 5234660, 17109057.
👀 [Installation]Instructions not included. Professional installation is recommended. When installing, please ensure that the valve tappet is filled with No. 68 hydraulic oil.(pre-added in the lifters).
👀 [Complete Set] 8x AFM Lifters, 8x Roller Lifters. This is a set of valve lifters (enough for one bank) required for AFM V-8 engines
Item Features:
1.The hydraulic roller lifter is designed to compensate for this small tolerance, so that the valve train operates under the condition of zero clearance, the operation is quieter, the engine life is longer, and there is no need to adjust the valve clearance regularly.
2.All our parts are strictly tested for quality and manufactured to improve performance. These steps are to control the quality of components that can work for a long time.
2.All our parts are strictly tested for quality and manufactured to improve performance. These steps are to control the quality of components that can work for a long time.
3.Replacement Hydraulic Roller Lifter - also known as tappets, these mechanisms converts the rotation of the camshafts into a vertical motion. Hydraulic lifters keep a constant space between the valves and camshaft lobes which adds complexity to the valvetrain, ensures the perfect timing and adds more horsepower to the engine.
Item Specifications:
100% Brand New
Warranty :90 Day
Free Reurn:30 Day
Color:Silver
Material:High quality steel
Size：As picture shown
OEM PART NUMBER:
12499225, 17122490, 17120735, 17121905, 25349994 12564012, 12576400, HL124, H124, H128, HT-2148 JB-2079, A2148,HL-2148S, B2148, 850-16, 10530-16, HL124-16K 77081-61416, 91113, 12571595,12639516, 12569256 12619820, 12632143, 17122490, 12645725 12680871, HL178, HL177, HT-2303, HL7011S
Easy To Install :
Before installation:
1 Check whether the oil is clean and whether the recommended grade of oil is used; Note: The grade of oil used in winter and summer is different! If winter is 10W30, summer is 15W40.
2 Check that the engine cylinder head bore is not out of tolerance and that the maximum matching gap is not allowed to exceed 0.10 mm. note: it must be ensured that the standard size of the hydraulic tappet cannot be fitted into the large cylinder head bore!
3. Before mounting, place the hydraulic tappets in groups in an oil bath for at least 4 hours, then test the centre plunger repeatedly with your finger in the oil until it feels firm.
When installing:
1 Try not to rotate the camshaft during installation, if this is unavoidable, it should be minimised as much as possible;.
2 Continuous rotation of the camshaft is less harmful than stopping of the camshaft;.
3 If continuous time rotation and stopping is unavoidable, the camshafts should also be kept in different directions.
4 Do not tilt or invert the engine during hydraulic tappet installation to prevent oil spillage into the hydraulic tappet chamber; 1.2.5 Do the refuelling procedure before starting the engine, as this reduces the chance of air entering the hydraulic tappets;
After installation (testing):
1 In some cases (repeated starting/cold starting/overhaul of the engine), the valve train produces an abnormal sound;
2 If the abnormal sound occurs during the first engine run (after overhaul), the engine must be run at a constant speed of 2500 RPM for approximately 4 minutes; 3 Then, allow the engine to idle for approximately 4 minutes.
3 Then, allow the engine to idle for approximately 30 seconds.
4 At this point, the abnormal sound disappears, indicating that the hydraulic tappet is fully vented. If the noise persists, repeat the above cycle.
5 This abnormal noise can be reduced by up to 90% after the first cycle.
6 In some cases, the above cycle can be repeated 5-6 times; 1.3.7 If the abnormal sound can be heard after repeating the cycle 5-6 times, the hydraulic tappet should be replaced.
1 Check whether the oil is clean and whether the recommended grade of oil is used; Note: The grade of oil used in winter and summer is different! If winter is 10W30, summer is 15W40.
2 Check that the engine cylinder head bore is not out of tolerance and that the maximum matching gap is not allowed to exceed 0.10 mm. note: it must be ensured that the standard size of the hydraulic tappet cannot be fitted into the large cylinder head bore!
3. Before mounting, place the hydraulic tappets in groups in an oil bath for at least 4 hours, then test the centre plunger repeatedly with your finger in the oil until it feels firm.
When installing:
1 Try not to rotate the camshaft during installation, if this is unavoidable, it should be minimised as much as possible;.
2 Continuous rotation of the camshaft is less harmful than stopping of the camshaft;.
3 If continuous time rotation and stopping is unavoidable, the camshafts should also be kept in different directions.
4 Do not tilt or invert the engine during hydraulic tappet installation to prevent oil spillage into the hydraulic tappet chamber; 1.2.5 Do the refuelling procedure before starting the engine, as this reduces the chance of air entering the hydraulic tappets;
After installation (testing):
1 In some cases (repeated starting/cold starting/overhaul of the engine), the valve train produces an abnormal sound;
2 If the abnormal sound occurs during the first engine run (after overhaul), the engine must be run at a constant speed of 2500 RPM for approximately 4 minutes; 3 Then, allow the engine to idle for approximately 4 minutes.
3 Then, allow the engine to idle for approximately 30 seconds.
4 At this point, the abnormal sound disappears, indicating that the hydraulic tappet is fully vented. If the noise persists, repeat the above cycle.
5 This abnormal noise can be reduced by up to 90% after the first cycle.
6 In some cases, the above cycle can be repeated 5-6 times; 1.3.7 If the abnormal sound can be heard after repeating the cycle 5-6 times, the hydraulic tappet should be replaced.
Fitment:
Compatible with Buick
2008-2009 ALLURE 5.3L
2008-2009 LACROSSE 5.3L
Compatible with Cadillac
2009-2012 ESCALADE 6.0L
2007-2008 ESCALADE 6.2L
Compatible with Pontiac
2008-2009 G8 6.0L
Compatible with Chevrolet
2007-2012 AVALANCHE 5.3L
2007-2009 AVALANCHE 6.0L
2011 CAPRICE 6.0L
2009 EXPRESS 2500 4.8L
2009 EXPRESS 3500 4.8L
2007-2009 IMPALA 5.3L
2007 MONTE CARLO 5.3L
2007-2012 SILVERADO 1500 5.3L
2007-2012 SILVERADO 1500 6.0L
2007-2012 SUBURBAN 1500 5.3L
2007-2009 SUBURBAN 1500 6.0L
2007-2012 TAHOE 5.3L
2008-2012 TAHOE 6.0L
Compatible with GMC
2009 SAVANA 2500 4.8L
2009 SAVANA 3500 4.8L
2007-2012 SIERRA 1500 5.3L
2007-2012 SIERRA 1500 6.0L
2007-2012 YUKON XL 1500 5.3L
2007-2009 YUKON XL 1500 6.0L
2007-2012 YUKON 5.3L
2007-2009 YUKON 5.3L
2012 YUKON 6.0L
2008-2009 YUKON 6.0L
2007-2008 YUKON 6.2L
Packing List:
8 Pcs Roller Lifters
8 Pcs AFM Lifters(as shown in the picture).
NOTE:
(1) According to the distance of the receipt address items would be sent from CA or NJ
(2) Items would be shipped within 24 hours with cleared payment(Exclude Weekend and Holidays)
(3) Items wont be shipped to Puerto Rico(Please check your address before placing an order!)
(4) Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item
(5) It would be highly appreciated if you might contact us first once you have any problems concerning the items. And you can expect all the issues would be resolved ASAP!
(3) Items wont be shipped to Puerto Rico(Please check your address before placing an order!)
(4) Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item
(5) It would be highly appreciated if you might contact us first once you have any problems concerning the items. And you can expect all the issues would be resolved ASAP!
