How to Replace Harley Rocker Box Gaskets?

Answer Leaking rocker box gaskets were a particular problem with Harley Evolution engines. Harley went through four generations of lower rocker covers and four versions of the middle cover, or D-Ring, as... Read More »

Top Q&A For: How to Replace Harley Rocker Box Gaskets

How to Change Rocker Box Gaskets on the Harley Evolution?

The Evolution engine was a significant upgrade over the preceding Shovelhead power plants. Part of the redesign was the replacement of the spade-shaped Shovelhead rocker covers with rocker covers t... Read More »

How to Replace Harley Rocker Boxes?

Harley Davidson rocker boxes are a three-part aluminum assembly with rubber quad seal gaskets to retain top-end engine oil lubrication. The rocker boxes house the top end of the pushrods, the valve... Read More »

How to Replace a Rocker Box Gasket on a 1200 Harley Sportster?

The 1,200cc Harley-Davidson Sportster XL and XR models come equipped with a two-piece, aluminum rocker-box cover assembly that houses the rocker arms, valve stems and upper pushrod ends. Engine oil... Read More »

How to Replace the Valve Cover Gaskets on a Harley Davidson Evo Blockhead Engine?

The valve cover gasket on a Harley-Davidson Evo Blockhead engine is traditionally called the rocker cover gasket. However, the gasket works the same way a valve cover gasket works on an automobile,... Read More »