Pushrods, Rocker Arms, Lifters & Components

Tappets, Pushrod Tubes, Rocker Arm Shafts, Balls, Nuts & Bolts

The valvetrain converts the rotating eccentric motion of the camshaft lobes to the reciprocating motion of the valves. Valvetrain design and componentry differs according to where the camshaft is located. On Over Head Valve (OHV) engines the camshaft is mounted in the cylinder block. On Over Head Cam (OHC) engines one or two camshafts are mounted on the cylinder head. Whatever the configuration, we have the replacement parts for a successful repair.

Featured Products

We aim to provide our customers with the finest Pushrods, Rocker Arms, Lifters & Components the industry can offer, which is why we accept no compromise when it comes to the quality. Created by the most reputable names in the industry, such as Fel-Pro, Victor Reinz the Pushrods, Rocker Arms, Lifters & Components we've gathered for you feature precise design and everlasting durability.

Shop by Brand

OHV valvetrains are the most complex, with lifters that ride on the camshaft lobes, pushrods that transfer motion up to the cylinder head, and rocker arms that pivot on shafts or studs in response to the pushrods and actuate the valves. OHC valvetrains can vary from the pivoting rocker type followers ordinarily used with SOHC (Single OHC) engines, to the simple buckets between the cam and valves common to DOHC (Double OHC) designs.

As the engine runs and parts expand from heat, valvetrain clearances can change. There are hydraulic valvetrains with mechanisms to compensate for these changes, and mechanical valvetrains that have a specified clearance, or lash, that ensures the valves can fully close. OHV valvetrains have hydraulic lifters while OHC valvetrains have hydraulic lash adjusters. The plungers, check valves and springs in these devices are supplied with pressurized oil from the pump and maintain zero lash in the valvetrain. The clearance in mechanical valvetrains must be checked periodically and provisions for adjustment are included.

Reducing internal engine friction helps parts last longer and improves engine efficiency, for greater power and fuel mileage. To that end the lifters and cam followers in most modern engines have rollers that ride on the camshaft lobes instead of flat surfaces. Along with reducing friction, roller lifters also can be used with more aggressive cam lobe profiles that allow the valves to be opened faster. Unlike flat tappet cams, they can also be reused with a new cam. Flat tappet lifters develop specific wear patterns on the lobes, and must be replaced when a new cam is installed.

Valvetrain problems are often caused by excessive clearance. As cam lobes, lifters/followers, pushrods, and rocker arms wear, clearance is increased. Once clearance starts to increase, the pounding experienced by each component becomes greater as the lash opens and is taken up during valve operation. This can result in bent pushrods and broken rocker arms. Clicking noise in the valvetrain area can indicate excessive clearance, which can often be confirmed with a visual inspection. Check pushrods for a bent condition by rolling them on a flat surface. Inspect rocker arms for wear at the pivot and valve contact areas.

Shop by Category
Categories
Guides & Articles
This article will guide you through a generic tune up on most any car or light duty gasoline-powered vehicle built within the last 20 years or so. We will presume that you are tuning up your engine because it has reached the mileage or time point to do so, and that you are NOT performing a tune up to cure an engine performance defect. We make this distinction...
Internal combustion engines are extremely complex and feature a wide array of components that rotate, move up and down, pump, seal, or remain stationary. When repairing or rebuilding your engine, you will come across many different terms when referencing repair manuals and ordering parts. We know it can be confusing, especially when the repair is complex. Even if...