620-70156 1-1/2" Clamp-On Filtered Breather w/Shield (each)
Hardin’s 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.
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620-70153 1-1/2" Clamp-On Valve Cover Breather - No Shield (Each)
These breathers feature maximum flow and protection from airborne
elements. They are used on most Hardin Marine valve cover systems.
The breather is washable providing for easy maintenance.
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620-70154 1-3/8" Clamp-On Valve Cover Breather - No Shield (Each)
These breathers feature maximum flow and protection from airborne
elements. They are used on most Hardin Marine valve cover systems.
The breather is washable providing for easy maintenance.
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620-70155 1-3/8" Filtered Breather w/Shield (each)Hardin’s 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.
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620-70151 Push-In Filtered Valve Cover Breather - No Shield (Each)
These breathers feature maximum flow and protection from airborne
elements. They are used on most Hardin Marine valve cover systems.
The breather is washable providing for easy maintenance. Fits 1.25" hole.
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620-70152 Push-In Filtered Valve Cover Breather With Chrome Shield (Each)
These breathers feature maximum flow and protection from airborne
elements. They are used on most Hardin Marine valve cover systems.
The breather is washable providing for easy maintenance. Fits 1-1/4" hole.
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620-70150 Push In Chrome Breather, 1" Neck
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620-70166 Push-In Breather with Billet Top, No ShieldHardin’s breathers featuremaximum flow and protection from airborne elements. They are used on most HardinMarine valve cover systems. These breathers are easily washable for service. - 1" grommet
- 1.75" tall
- 2.5" outer diameter
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620-70160 Push-In Breather With Vent
These popular breathers are used when you would like to vent the crankcase to
another location such as the flame arrestor or a vac-u-pan. This unit is
used on many MerCruiser hi-performance applications. The push in has a
1" hole and a 5/8" vent hook-up.
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421-04-1260 Valve Cover Breather
To view and download the PDF drawing CLICK HERE Polished angled mounting flange valve cover breather. Used on 04-1240. (SOLD EACH)
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421-04-1265 Valve Cover Breather
To view and download the PDF drawing CLICK HERE Polished 90-degree mounting flange valve cover breather. Used on 04-1255. (SOLD EACH)
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421-04-1270 Breather
To view and download the PDF drawing CLICK HERE
Valve Cover Puke Tank Breather
1 5/16-12 UN Thread, fits -16 male union with O-ring or 1" NPT (SOLD EACH)
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620-45759 Billet Aluminum Valve Cover Breather
These billet aluminum valve cover breathers are so nice they could be jewelry for your engine. Each breather is precision machined from solid billet aluminum. They are height matched with dense foam packing and work well to keep blow by to a minimum. Valve cover breathers contain an effective filter which traps oil vapor and prevents engine compartment contamination. Universal design fits any 1" diameter valve cover hole. Sold Each.
- 2.25" bolt spread.
- 1.75" x 3.0" base.
- 4.25" tall.
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620-45757 4" Tall Aluminum Valve Cover Breather (Each)
- 4" Height
- 3-5/16" Base Length
- 1-7/8" Base Width
- 2-1/8" Bolt Hole center to center.
These breathers are designed to mount to the top of the valve cover with no bolts exposed. Each breather is highly polished.
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620-45758 Burn Down Valve Cover Breather (Each)
The baffled burn down style breathers got their name because they aretraditionally used to route crankcase pressure to the exhaust system.Today they are commonly used to route to a puke tank. These breathersfeature a -16 AN thread for ease of plumbing. Fittings are sold separately.
- 3.875" bolt spread.
- 1.75" base width.
- 4.5" tall.
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620-45760
- Polished Cast Aluminum
- Dual internal baffles Breather is sloped to match the styling of the valve cover
- Base measures 3-1/4" Long X 2" Wide with 2-3/8 Bolt Center to Center
- Breather measures 4" tall.
- Breather opening measures 1-3/4" Long x 1-1/4 Wide
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620-45756 Short Aluminum Valve Cover Breather - 2-3/4" Tall (Each)
- 2-3/4" Height
- 3-3/8" Base Length
- 1-7/8" Base Width
- 2-1/8" Bolt Hole Center to Center
These breathers are designed to mount to the top of the valve cover with no bolts exposed. Each breather is highly polished.
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620-45762 Breather Splash Cover, fits breathers with mounting center to center of 2" to 2.5".
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620-45758G Burn Down Valve Cover Breather Gasket (Each)
Replacement Gasket for Burn Down Breather
- 3.875" bolt spread.
- 1.75" base width.
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620-45754 Replacement gasket for breather models 620-45756 and 620-45757.
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