10 Best Automotive Replacement Engine Rocker Arms {Expert Reviews}

An automotive replacement engine rocker arm is a part of the engine that helps convert the linear motion of the camshaft into rotational motion to open and close the intake and exhaust valves. The rocker arm is mounted on a shaft that is attached to the engine block and pivots on a stud that is attached to the valve stem. The rocker arm is generally made of cast iron, aluminum, or steel.

A Shortlist Of The Best Automotive Replacement Engine Rocker Arms

Here is a quick recap of our top 10 picks that lets you compare each item with another and allow you to choose the best one.

10 Best Automotive Replacement Engine Rocker Arms You Should Consider In 2022

Bestseller No. 1
COMP Cams 1676-16 Ultra Pro Magnum 1.8 Ratio Rocker Arm Set for GM LS3 w/ 3/8" Stud
  • Country Of Origin: United States
  • Product Type:Auto Part
  • Designed For Good Performance
  • Package Weight: 7.02 Pounds
Bestseller No. 2
Ensun 5184296AH 12 x Rocker Arms + 5184332AA 12 x Valve Lifters - only replacement for - Chrysler Dodge Jeep Ram 3.6L Engine
  • 【Premium Quality】: Ensun's rocker arms and valve lifters have been manufactured to fit your vehicle, providing the same performance, durability, and service life you expect from Original Parts.
  • 【Direct Fit】: Direct replacement for a proper fit and easy installation, quality materials used, meets or exceeds OEM standards, 100% tested before shipping;
  • 【Fitment/Compatibility】: Only Fit for 3.6L Engines
  • 【Replacement OEM ( Original Equipment Part) Number】: 5184296AE, 5184296AF, 5184296AH, 7B0109441B, 5184332AA
  • 【Buy with Confidence】: Order from Ensun, we offer a 12-Month Warranty, true worry-free shopping experience;
Bestseller No. 3
Michigan Motorsports Rocker Arms with upgraded Trunion Kit Fitment Specific to Gen V LT1 LT4 LV3 L83 L86
  • Michigan Motorsports Rocker Arm Trunion Kit - Specific to Gen V LT1 LT4 LV3 L83 L86
  • These LS Series retrofit trunion kits are designed to convert stock LS Series rocker arms into captured roller bearing rocker arms. The factory bearings are a known failure on the LS Engines. When they fail they send small bearings through the entire engine. The upgraded trunions use a captured roller bearing allowing for a reliable smooth rotation.
  • The upgraded trunions also give more stability at higher RPM. We use these trunion kits in anything from stock 4.8's all they way up to 1,000+hp turbo motors.
  • The stock factory LS rocker arms are very strong and very light. Once you upgrade the bearings and trunions the rocker arms handle similar to very expensive roller rocker arms (at a fraction of the cost). These are a must have for anyone installing a aftermarket Cam, Supercharger, Turbo or Nitrous.
  • The Kit includes the rocker arm trunions, rocker arm bearings, and rocker arm retaining rings and upgraded bolts for a complete installation. The bolts we supply are slightly shorter than factory bolts so they do not protrude into the intake ports. Bolts are stronger than a grade 8 bolt with a minimum tensile strength of 170,000 psi.
SaleBestseller No. 4
NewYall Pack of 12 Engine Pentastar Rocker Arm and Valve Lifter Kit
  • For Jeep Cherokee 2014-2020, Grand Cherokee 2011-2019, Wrangler 2014-2018
  • For Dodge Grand Caravan / Journey 2011-2018, Durango 2011-2015, Challenger / Charger 2011-2020, Avenger 2011-2014
  • For Chrysler 200 2011-2017, 300 2011-2019, Town & Country 2011-2016
  • For Ram 1500 2013-2019, ProMaster 1500/2500/3500 2014-2018
Bestseller No. 5
Elgin RK-907 Rocker Arm Kit
  • Product Type: Auto Part
  • Package Quantity: 1
  • Made In United States
  • Package Dimensions: 5.08Cm (L) X 26.162Cm (W) X 38.862Cm (H)
Bestseller No. 6
Ford Mustang F150 Racing 4.6L 5.4L 3V Engine Valve Rocker Arm x12 OEM 3L3Z6564BA
  • Genuine Ford part that fits your specific vehicle
  • Engine Valve Rocker Arm
  • Part Number: 3L3Z-6564-BA
  • Manufactured to meet specifications for fit, form, and function
Bestseller No. 7
DNJ RA3136 Rocker Arm For 02-17 GM, Isuzu, Saab, Suzuki L4, L5, L6, V6 / 2.8L, 2.9L, 3.0L, 3.2L, 3.5L, 3.6L, 3.7L, 4.2L DOHC 16V, 20V, 24V
  • THIS IS BRAND NEW: DNJ® Rocker Arm
  • FITS: 02-17 Chevrolet, GMC, Suzuki, Isuzu 2.8L-4.2L V6, L5, L4, L6 DOHC Naturally Aspirated, Turbocharged LFX,LFR,-,LF3,LF1,LLT,LAU,N32A,N36A,B284
  • DNJ Engine Components is a full line provider of Domestic & Japanese engine parts for cars and trucks.
  • We carefully selected DNJ Engine Components as the sole provider. DNJ has a 30+ year track record of quality, experience, and trust. It makes sense for us to carry a brand that would help us earn customer loyalty in the long run
Bestseller No. 8
Melling MRK-1333 Stock Replacement Engine Rocker Arm Kit
  • Manufactured from high quality materials for consistent durable wear
  • Precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
  • Kit includes rocker arms and related rocker arm components needed to complete the engine rebuild
Bestseller No. 9
Glixal ATMT1-097 157QMJ Engine CamShaft Seat with Rocker Arm Assy for GY6 125cc 150cc Chinese Scooter Moped ATV Go Kart
  • Fit 152QMI 157QMJ GY6 125cc 150cc Engine
  • 54mm center to center side hole spacing
  • 76mm center to center diagonal hole spacing
  • Please compare your part with our picture before you place the order
Bestseller No. 10
Melling MR-1332 Stock Replacement Rocker Arm
  • Manufactured from high quality durable materials for long wear
  • Precision engineered for optimum fit and function
  • Designed for long-life and maintenance free performance
  • Meets or exceeds original equipment specifications

What To Look For Choosing The Best Automotive Replacement Engine Rocker Arms

Before choosing a automotive replacement engine rocker arms, you should take the following considerations into account.

When shopping for automotive replacement engine rocker arms, it is important to consider the type of engine you are using and the application. For example, a replacement arm for an overhead cam engine might be different than one for a V-8. Additionally, you will need to decide on the size of arm you need and the type of fastener that will be used to attach it.

Related Frequently Asked Questions

How Much Does It Cost To Replace Engine Rockers?

The price to replace engine rockers can vary depending on the make and model of the engine, as well as the quantity of rockers that need to be replaced. In general, however, it is likely that replacement costs will run between $200 and $1,000.

Do Changing Rocker Arms Increase Horsepower?

There is no definitive answer to this question as it depends on a variety of factors, including the make and model of the engine and rocker arms used. Some proponents of changing rocker arms argue that they can increase horsepower by opening up the air-flow pathways within the engine, while others believe that there is no real difference between using stock or modified rocker arms. Ultimately, it is up to the individual mechanic or tuner to determine whether or not changing rocker arms will result in an increase in horsepower.

How Do I Know What Rocker Arms To Use?

The most important factor to consider when choosing rocker arms is the size and shape of the engine. Other factors to consider are the leverage ratio, arm length, and arm position.

Do Rocker Arms Make A Difference?

There is no clear answer as to whether or not rocker arms make a difference in the performance of a bike. Some believe that they do, while others claim that they don’t. Ultimately, it is up to the rider to decide if they think that the added flexibility and adjustability of rocker arms is worth the additional cost.


There are many different replacement engine rocker arms on the market, so it can be difficult to decide which one is the best for your vehicle. Some factors to consider include price, quality, and compatibility. Ultimately, you should choose the replacement engine rocker arm that best suits your needs.

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