How to replace the valve rocker arm and hydraulic valve lash adjuster on Chevrolet Colorado?

The first step for valve Rocker Arm and hydraulic valve Lash Adjuster replacement requires you to remove the camshaft cover. The Crankshaft rotation should continue until the open valve of the affected cylinder approaches full opening while the cam lobe completely presses down on the spring. You can install the valve spring compressor (EN-47945) on the engine Cylinder Head by placing one or two fasteners from the set in the coil fastener hole although some locations only need one fastener. Moving the engine after attaching the tool should be avoided because it can harm engine valves. The clock-wise engine rotation positions the cam on the base circle to enable the removal of the Lash Adjuster and rocker together. Check the valve Rocker Arm as well as the valve Lash Adjuster before cleaning and inspecting them. Before reinstallation add oil both to the valve Rocker Arm and inside the valve Lash Adjuster. Follow these steps for installation of the tool by rotating the engine counterclockwise toward the cam lobe depression of the spring once more. Use the valve spring compressor (EN-47945) again to remove it from the Cylinder Head while executing the procedure a second time if necessary. Finally, install the camshaft cover.

How to replace the valve rocker arm and push rods on Chevrolet S10?

Start by removing the valve Rocker Arm cover before replacing the valve Rocker Arm along with push rods. Keep all components organized for future assembly operations while placing appropriate marks on them. After removing the valve rocker arms you should proceed to take out the Rocker Arm supports together with the valve pushrods while labeling components for reinstallation. Pass all components through cleaning solvent before using compressed air to dry them. Check the valve Pushrod socket contact area for smooth motion and wear near the contact surface together with the roller pivot for damage and binding situations while also verifying the valve stem contact surface and bolt thread conditions. The end surfaces of valve pushrods must undergo inspection for limitations in oil flow and end surface deterioration and bending through flat surface rolling activities. Temporarily check the valve rocker support to identify cases of excessive wear or damage. Installation procedures require parts maintenance of original locations while keeping a logical sequence for their assembly. Operating procedure starts with valve Pushrod installation where you need to align the valve Rocker Arm support arrow in an upward direction before adding the valve Rocker Arm supports. We need to apply prelube gm p/n 12345501 or its equivalent to all three components: the valve Pushrod socket and roller pivot and valve stem tip. Install the valve Rocker Arm assemblies by gently starting the bolts which should be at locations , , , and the remaining bolts. Adjust the crankshaft balancer until the alignment mark reaches 5763 degrees toward the clockwise or counterclockwise direction from the front cover alignment tab. After installing and correctly torquing the valve Rocker Arm assemblies you do not require any further adjustment of valve lash. Complete the procedure by fastening valve Rocker Arm bolts to 30 nm (22 ft. Lbs.) before reinstalling the valve Rocker Arm cover.

OEM Chevrolet Rocker Arm

Engine Rocker Arm

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50 Rocker Arms found

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Chevrolet Rocker Arms Part Number: 12579615
$16.68 MSRP: $26.12
You Save: $9.44 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Arm Assembly-Intake Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Corvette | 2006-2013 | 427, 427 Limited Edition Z06, Z06, Z06 Carbon | 8 Cyl 7.0 L GAS
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Chevrolet Rocker Arms Part Number: 10214664
$14.44 MSRP: $23.79
You Save: $9.35 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Arm, Valve Rocker; Rocker Arm
- Replaced by: 12681275
Fits the following Chevrolet Models:
- Avalanche | 2007-2013 | Black Diamond LS, Black Diamond LT, Black Diamond LTZ, LS, LT, LTZ | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Camaro | 2010-2015, 1998-2002 | SS, Z28, Z28 SS, ZL1 | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L GAS
- Caprice | 2011-2017 | PPV | 8 Cyl 6.0 L FLEX
- Colorado | 2009-2012 | LT | 8 Cyl 5.3 L GAS
- Corvette | 1997-2013 | 50th Anniversary Edition, 50th Anniversary Edition Pace Car, Base, Grand Sport, Indianapolis 500 Pace Car, Z06, ZR1 | 8 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
- Express 2500 | 2003-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Express 3500 | 2003-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Impala | 2006-2009 | SS | 8 Cyl 5.3 L GAS
- Monte Carlo | 2006-2007 | SS | 8 Cyl 5.3 L GAS
- SS | 2014-2017 | Base | 8 Cyl 6.2 L GAS
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Chevrolet Rocker Arms Part Number: 12579617
$17.44 MSRP: $28.75
You Save: $11.31 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Arm, Engine Valve Rocker; Rocker Arm
Fits the following Chevrolet Models:
- Camaro | 2014-2015 | Z/28 | 8 Cyl 7.0 L GAS
- Corvette | 2006-2013 | 427, 427 Limited Edition Z06, Z06, Z06 Carbon | 8 Cyl 7.0 L GAS
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Chevrolet Rocker Arms Part Number: 12669878
$75.90 MSRP: $118.89
You Save: $42.99 (37%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Arm, Engine Valve Rocker; Rocker Arm
- Replaces: 12631220
Fits the following Chevrolet Models:
- Impala | 2014-2015 | LS, LT, LTZ | 4 Cyl 2.5 L GAS
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Chevrolet Rocker Arms Part Number: 5723551
$15.51 MSRP: $24.30
You Save: $8.79 (37%)
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Product Specifications
- Other Name: Unit-Rocker Arm, Ball & Nut; Arm Kit, Engine Valve Rocker; Arm, Engine Valve Rocker; Rocker Arm
Fits the following Chevrolet Models:
- C10 | 1984 | Custom, Scottsdale, Silverado | 6 Cyl 4.1 L GAS
- C20 | 1984 | Custom, Scottsdale, Silverado | 6 Cyl 4.1 L GAS, 6 Cyl 4.8 L GAS
- C30 | 1984 | Custom, Scottsdale, Silverado | 6 Cyl 4.8 L GAS
- G10 | 1984 | Beauville, Bonaventure, Chevy Van, Sportvan | 6 Cyl 4.1 L GAS
- G20 | 1984 | Beauville, Bonaventure, Chevy Van, Sportvan | 6 Cyl 4.1 L GAS
- G30 | 1984 | Beauville, Bonaventure, Chevy Van, Hi-Cube | 6 Cyl 4.1 L GAS
- K10 | 1984 | Custom, Scottsdale, Silverado | 6 Cyl 4.1 L GAS
- K20 | 1984 | Custom, Scottsdale | 6 Cyl 4.8 L GAS
- K30 | 1984 | Custom, Scottsdale, Silverado | 6 Cyl 4.8 L GAS
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Chevrolet Rocker Arms Part Number: 97328661
$112.31 MSRP: $176.72
You Save: $64.41 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Arm, Engine Valve Rocker; Rocker Arm
- Replaces: 97224897
Fits the following Chevrolet Models:
- Silverado 2500 HD | 2001-2005 | Base, LS, LT, WT | 8 Cyl 6.6 L DIESEL
- Silverado 3500 | 2001-2005 | Base, LS, LT, WT | 8 Cyl 6.6 L DIESEL
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Chevrolet Rocker Arms Part Number: 12577695
$24.60 MSRP: $40.51
You Save: $15.91 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Arm Assembly-Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Impala | 2006-2011 | 50th Anniversary Edition, LS, LT, LTZ, Police | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
- Malibu | 2006-2010 | Classic LS, Classic LT, LS, LT, LTZ, Maxx LS, Maxx LT, Maxx LTZ, Maxx SS, SS | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L GAS
- Monte Carlo | 2006-2007 | LS, LT, LTZ | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L GAS
- Uplander | 2006-2008 | Base, LS, LT | 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
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Chevrolet Rocker Arms Part Number: 12576628
$18.08 MSRP: $29.79
You Save: $11.71 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Arm Assembly-Valve Rocker; Rocker Arm
Fits the following Chevrolet Models:
- Impala | 2003-2005 | Base | 6 Cyl 3.4 L GAS
- Malibu | 2003-2006 | Base, LS, LT, LTZ, Maxx, Maxx LS, Maxx LT, Maxx LTZ | 6 Cyl 3.1 L GAS, 6 Cyl 3.5 L GAS
- Monte Carlo | 2003-2005 | LS, LS Competition, LS Sport | 6 Cyl 3.4 L GAS
- Uplander | 2005-2006 | Base, LS, LT | 6 Cyl 3.5 L GAS
- Venture | 2003-2005 | LS, LT, Plus, Value, Warner Bros. | 6 Cyl 3.4 L GAS
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Chevrolet Rocker Arms Part Number: 12625214
$37.35 MSRP: $58.51
You Save: $21.16 (37%)
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Product Specifications
- Other Name: Arm Assembly-Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Colorado | 2016-2022 | LT, WT, Z71, ZR2 | 4 Cyl 2.8 L DIESEL
- Express 2500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
- Express 3500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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Chevrolet Rocker Arms, Green Line Part Number: 12565203
$22.32 MSRP: $36.74
You Save: $14.42 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Arm, Valve Rocker; Rocker Arm
- Replaced by: 12693909
Fits the following Chevrolet Models:
- Captiva Sport | 2012-2015 | LS, LT, LTZ | 4 Cyl 2.4 L FLEX
- Cavalier | 2002-2005 | Base, LS, LS Sport | 4 Cyl 2.2 L BI-FUEL, 4 Cyl 2.2 L GAS
- Cobalt | 2005-2010 | Base, LS, LT, LTZ, Sport, SS | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
- Equinox | 2010-2017 | L, LS, LT, LTZ, Premier | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
- HHR | 2006-2011 | LS, LS Panel, LT, LT Panel, SS, SS Panel | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
- Impala | 2014 | Eco | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
- Malibu | 2004-2015 | Base, Classic LS, Eco, Hybrid, LS, LT, LTZ | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 4 Cyl 2.5 L GAS
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Chevrolet Rocker Arms Part Number: 98004537
$111.09 MSRP: $174.02
You Save: $62.93 (37%)
Product Specifications
- Other Name: Arm, Engine Valve Rocker; Rocker Arm
Fits the following Chevrolet Models:
- Express 2500 | 2006-2016 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
- Express 3500 | 2006-2016 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
- Silverado 2500 HD | 2006-2016 | High Country, LS, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
- Silverado 2500 HD Classic | 2007 | LS, LT, WT | 8 Cyl 6.6 L DIESEL
- Silverado 3500 | 2006 | LS, LT, WT | 8 Cyl 6.6 L DIESEL
- Silverado 3500 Classic | 2007 | LS, LT, WT | 8 Cyl 6.6 L DIESEL
- Silverado 3500 HD | 2007-2016 | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
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Chevrolet Rocker Arms Part Number: 10121003
Product Specifications
- Other Name: Arm, Engine Valve Rocker; Rocker Arm
Fits the following Chevrolet Models:
- Chevette | 1984-1987 | Base, CS | 4 Cyl 1.6 L GAS
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Chevrolet Rocker Arms Part Number: 94840056
Product Specifications
- Other Name: Arm, Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Nova | 1985-1988 | Base, CL, Twin Cam | 4 Cyl 1.6 L GAS
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Chevrolet Rocker Arms Part Number: 94840057
Product Specifications
- Other Name: Arm, Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Nova | 1985-1988 | Base, CL, Twin Cam | 4 Cyl 1.6 L GAS
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Chevrolet Rocker Arms Part Number: 94256962
Product Specifications
- Other Name: Arm; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Spectrum | 1985-1988 | Base, CL, CL Plus, Express, Turbo | 4 Cyl 1.5 L GAS
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Chevrolet Rocker Arms Part Number: 24575302
Product Specifications
- Other Name: Arm Assembly-Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- S10 | 1998-2003 | Base, LS, Xtreme | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS
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Chevrolet Rocker Arms Part Number: 12344051
Product Specifications
- Other Name: Arm Kit, Engine Valve Rocker; Rocker Arm
Fits the following Chevrolet Models:
- Lumina APV | 1993-1995 | Base, LS | 6 Cyl 3.8 L GAS
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Chevrolet Rocker Arms Part Number: 12594509
Product Specifications
- Other Name: Arm Assembly-Valve Rocker; Rocker Arm; Arm, Engine Valve Rocker
Fits the following Chevrolet Models:
- Equinox | 2006-2009 | LS, LT, LTZ | 6 Cyl 3.4 L GAS
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Chevrolet Rocker Arms Part Number: 12557779
Product Specifications
- Other Name: Arm, Valve Rocker; Rocker Arm; Arm Kit, Engine Valve Rocker
Fits the following Chevrolet Models:
- Corvette | 1996 | Base | 8 Cyl 5.7 L GAS
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Chevrolet Rocker Arms, Passenger Side Part Number: 1241850
Product Specifications
- Other Name: Arm-Valve Rocker Arm Right; Arm, Engine Valve Rocker; Rocker Arm
- Position: Passenger Side
Fits the following Chevrolet Models:
- Caprice | 1984 | Classic | 6 Cyl 3.8 L GAS
- El Camino | 1984 | Base, Conquista, SS | 6 Cyl 3.8 L GAS
- Impala | 1984 | Base | 6 Cyl 3.8 L GAS
- Monte Carlo | 1984 | Base | 6 Cyl 3.8 L GAS
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Chevrolet Rocker Arm

Choose OEM Rocker Arm, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Chevrolet's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsGiant.com, you'll find it easy to get top-quality OEM Chevrolet Rocker Arm. You can shop at highly competitive prices and protect your budget. All our genuine Chevrolet parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Chevrolet Rocker Arm Parts and Q&A

Rocker Arms
10214664
Q: How to replace the valve rocker arm and hydraulic valve lash adjuster on Chevrolet Colorado?
A:
The first step for valve Rocker Arm and hydraulic valve Lash Adjuster replacement requires you to remove the camshaft cover. The Crankshaft rotation should continue until the open valve of the affected cylinder approaches full opening while the cam lobe completely presses down on the spring. You can install the valve spring compressor (EN-47945) on the engine Cylinder Head by placing one or two fasteners from the set in the coil fastener hole although some locations only need one fastener. Moving the engine after attaching the tool should be avoided because it can harm engine valves. The clock-wise engine rotation positions the cam on the base circle to enable the removal of the Lash Adjuster and rocker together. Check the valve Rocker Arm as well as the valve Lash Adjuster before cleaning and inspecting them. Before reinstallation add oil both to the valve Rocker Arm and inside the valve Lash Adjuster. Follow these steps for installation of the tool by rotating the engine counterclockwise toward the cam lobe depression of the spring once more. Use the valve spring compressor (EN-47945) again to remove it from the Cylinder Head while executing the procedure a second time if necessary. Finally, install the camshaft cover.
Rocker Arms
12599650
Q: How to replace the valve rocker arm and push rods on Chevrolet S10?
A:
Start by removing the valve Rocker Arm cover before replacing the valve Rocker Arm along with push rods. Keep all components organized for future assembly operations while placing appropriate marks on them. After removing the valve rocker arms you should proceed to take out the Rocker Arm supports together with the valve pushrods while labeling components for reinstallation. Pass all components through cleaning solvent before using compressed air to dry them. Check the valve Pushrod socket contact area for smooth motion and wear near the contact surface together with the roller pivot for damage and binding situations while also verifying the valve stem contact surface and bolt thread conditions. The end surfaces of valve pushrods must undergo inspection for limitations in oil flow and end surface deterioration and bending through flat surface rolling activities. Temporarily check the valve rocker support to identify cases of excessive wear or damage. Installation procedures require parts maintenance of original locations while keeping a logical sequence for their assembly. Operating procedure starts with valve Pushrod installation where you need to align the valve Rocker Arm support arrow in an upward direction before adding the valve Rocker Arm supports. We need to apply prelube gm p/n 12345501 or its equivalent to all three components: the valve Pushrod socket and roller pivot and valve stem tip. Install the valve Rocker Arm assemblies by gently starting the bolts which should be at locations , , , and the remaining bolts. Adjust the crankshaft balancer until the alignment mark reaches 5763 degrees toward the clockwise or counterclockwise direction from the front cover alignment tab. After installing and correctly torquing the valve Rocker Arm assemblies you do not require any further adjustment of valve lash. Complete the procedure by fastening valve Rocker Arm bolts to 30 nm (22 ft. Lbs.) before reinstalling the valve Rocker Arm cover.