Hardin Marine
2-Piece Valve Cover Accessories
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Below you will find the components used in the popular Hardin marine
2-piece covers. The caps and extensions are CNC machined from billet
aluminum and both seal with an o-ring.
Part
No. |
Description |
620-154023 |
Filler Cap (2 required) |
620-154022 |
Breather Extension (2 required) |
620-154024 |
Large O-ring (for replacement between covers) |
620-70153 |
1-1/2" Clamp-on Breather No Shield (each) |
620-154025 |
Stainless Hardware Kit for 2-piece Covers |
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Keith Eickert
2-Piece Valve Cover Accessories
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Below you will find the components used in the popular Keith Eickert 2-piece valve covers. These are CNC machined from billet
aluminum and hardcoat anodized black. Both seal with an o-ring.
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Hardin Marine
Valve Cover Vent Extension
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This gold irridited valve
cover vent extension is commonly used to vent crankcase emissions to
your flame arrestor
Part
No. |
Description |
620-70182 |
5/8" x 3/4" Valve Cover Vent
Extension |
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Hardin Marine
Push-In Breather With Vent
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These popular breathers are used when you would like to vent the crank case
to another location such as the flame arrestor or vac-u-pan. This unit is used on
many MerCruiser hi-performance applications. Push in has a 1" hole and has a 5/8"
vent hook-up.
Part
No. |
Description |
620-70160 |
Valve Cover Breather |
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Crankcase Evacuation System
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Designed primarily for drag and
circle racing. This system is designed to reduce pressure build-up
in the engine crankcase and to reduce oil leaks, while increasing engine performance. Track and dyno
tests show significant horsepower increases. Includes 2 each:
oil separator Small Block breathers, breather/filler cap, grommets,
one-way check valve and weld-in nipple for header collector.
Note: Not recommended with mufflers.
Part
No. |
Description |
655-6002 |
Pan E-vac System |
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Hardin Marine
Filtered Valve Cover Breathers
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These breathers feature maximum flow and protection
from airborne elements. They are used on most Hardin
Marine valve cover systems. These breathers are easily
washable for service.
Part
No. |
Description |
620-70151 |
Push-in Breather No Shield (each) |
620-70152 |
Push-in Breather with Chrome Shield (each) |
620-70154 |
1-3/8" Clamp-on Breather No Shield (each) |
620-70153 |
1-1/2" Clamp-on Breather No Shield (each) |
620-68802 |
1-3/8" Dual Baffle Weld-in Breather Extension |
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Hardin Marine
Tall & Short Aluminum Valve Cover Breathers
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These breathers are designed to mount to the top of
the valve cover with no bolts exposed. Each breather is
highly polished. Short breathers are 2-3/4" tall while Tall
breathers are 4".
Part
No. |
Description |
620-45756 |
2-3/4" Short Aluminum Breathers (each) |
620-45757 |
4" Tall Aluminum Breathers (each) |
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Hardin Marine
Burn Down Valve Cover Breathers
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These baffled burn down style breathers got their
name because they are traditionally used to route
crankcase pressure to the exhaust system. Today they are
commonly used to route to a puke tank. These breathers feature a
-16 thread for ease of plumbing. Fittings sold separately.
Part
No. |
Description |
620-45758 |
Burn Down Breather (each) |
550-991922 |
-16 To -10 Adapter Fitting (each) |
550-991923 |
-16 To -12 Adapter Fitting (each) |
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Hardin Marine
Extreme Valve Cover Aluminum Breather
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Finally a new modern styled breather is available.
Hardin Marine introduces a breather to match the ever
popular extreme series valve covers. The top of the breather
is sloped to match the styling of the valve cover while
integrating dual internal baffles, there's never any foam to replace.
Part
No. |
Description |
620-45760 |
Extreme Valve Cover Aluminum Breather |
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Hardin Marine
Billet Aluminum Valve Cover Breathers
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These aluminum valve cover breathers are so nice
they could be jewelry for you engine. Each breather is
precision machined from solid billet aluminum. Their height
matched with dense foam packing work well to keep blow by to
a minimum.
Part
No. |
Description |
620-45759 |
Billet Breather (each) |
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