• COMP Cams Rocker Arm Gm LS3 1.8 Bolt Do 1678-1
  • COMP Cams Rocker Arm Gm LS3 1.8 Bolt Do 1678-1
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COMP Cams

COMP Cams Rocker Arm Gm LS3 1.8 Bolt Do 1678-1

COMP Cams Rocker Arm Gm LS3 1.8 Bolt Do 1678-1

$37.29 USD
$37.29 USD
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COMP Cams Rocker Arm Gm LS3 1.8 Bolt Do 1678-1, with the part number and details listed below. Rocker arms transfer motion from the cam or pushrod to the valve.

Quick facts

  • Brand: COMP Cams
  • Part type: Rocker arm

Listed fitment

  • 2012 Cadillac CTS 3.6L, 3.0L
  • 2011 - 2014 Cadillac CTS Coupe
  • 2010 - 2015 Cadillac CTS Performance
  • 2013 Cadillac CTS V Luxury
  • 2009 - 2015 Cadillac CTS V, Base, Luxury, Premium
  • 2014 - 2015 Cadillac CTS Vsport Premium, Vsport
  • 2007 - 2014 Cadillac Escalade Base
  • 2009 - 2013 Cadillac Escalade Hybrid
  • 2010 - 2013 Cadillac Escalade Hybrid Platinum
  • 2008 - 2014 Cadillac Escalade Platinum
  • 2011 - 2014 Cadillac Escalade Premium, Luxury
  • 2012 Cadillac Escalade Special Edition
  • 2007 - 2014 Cadillac Escalade ESV Base
  • 2008 - 2014 Cadillac Escalade ESV Platinum
  • 2011 - 2014 Cadillac Escalade ESV Premium, Luxury
  • 2012 Cadillac Escalade ESV Special Edition
  • 2007 - 2013 Cadillac Escalade EXT Base
  • 2011 - 2013 Cadillac Escalade EXT Luxury, Premium
  • 2007 - 2009 Chevrolet Avalanche Base, LTZ, LT, LS
  • 2011 - 2012 Chevrolet Camaro 2SS, 1LT, 1SS
  • 2010 - 2015 Chevrolet Camaro LS
  • 2016 Chevrolet Camaro RS
  • 2010 - 2016 Chevrolet Camaro SS, LT
  • 2014 - 2015 Chevrolet Camaro Z/28
  • 2012 - 2015 Chevrolet Camaro ZL1
  • 2008 Chevrolet Corvette 427 Limited Edition Z06
  • 2013 Chevrolet Corvette 427, LT
  • 2010 - 2013 Chevrolet Corvette Grand Sport
  • 2011 Chevrolet Corvette Z06 Carbon
  • 2008 - 2013 Chevrolet Corvette Z06, Base
  • 2009 - 2013 Chevrolet Corvette ZR1
  • 2009 - 2013 Chevrolet Silverado 1500 Hybrid
  • 2007 - 2013 Chevrolet Silverado 1500 LT, LS, Base, LTZ, WT
  • 2010 - 2013 Chevrolet Silverado 1500 XFE
  • 2014 - 2017 Chevrolet SS Base
  • 2007 - 2009 Chevrolet Suburban 1500 Base, LS, LTZ, LT
  • 2007 Chevrolet Suburban 1500 Z71
  • 2008 - 2009 Chevrolet Tahoe LTZ, LT, Base, LS, Z71, Hybrid
  • 2009 - 2013 GMC Sierra 1500 Hybrid
  • 2007 - 2013 GMC Sierra 1500 SLE, WT, SL, Denali, SLT
  • …and 9 more

Tip: Check rocker geometry and adjust valve lash or preload after installation.

View full details

COMP Cams rocker arms: what to know

Worn rocker tips or pivots cause noise and poor valve control.

Fitment notes

  • Specs, lead time and warranty come from COMP Cams and can change. The details above this guide are the latest we have.

Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.

Ask about fitment

What else to plan for

More for your car: Rocker Arms · All Rocker Arms · Engine

Questions about rocker arms

Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
Do I need to adjust valves after new rockers?
Yes on most engines with adjustable valvetrain.
Where do specs and warranty details come from?
From COMP Cams. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
More parts for this car
Rocker ArmsEngineAll COMP Cams