CA - PML now manufactures a valve
cover for Jeep 4.2 Liter/ 258 cubic inch engines. These
engines were produced from 1981 to 1987 with stock plastic
or stamped steel covers that were prone to leaking and oil
blow-by. PML designed the cover to solve these problems
and add a custom look to the Jeep engine.
The PML Jeep valve cover provides the strength and great
looks of sand-cast aluminum. The unique fin design adds
a custom look. The Jeep 4.2 Liter/258 cubic inch engine
comes in four possible fastener configurations. The PML
valve cover works with all possibilities and has provisions
for the use of studded bridges and head bolts.
cover features a precision-machined 0.200 inch-thick gasket
flange for a uniform clamping force on the gasket. This
prevents leaking that is common with stamped steel or plastic
designed a large baffle and integrated it into the cover.
Other covers have small baffles screwed onto the cover.
Integrating the baffle into the casting increases manufacturing
costs but is a great improvement in functionality. The small
baffles allow the oil to blow by and block the PCV valve.
The large baffle on the PML cover blocks the oil and solves
the PCV “blow-by” problem. Integrating the baffle
into the casting ensures that no screws will loosen and
fall into the valve train.
PML Jeep valve cover is available in three finishes: as-cast,
black powder coated, polished.