Product Description
MAHLE GS33445 Left Side Crankcase Breather Gaskets are an OE-quality seal set for the 2003–2007 Ford 6.0L Powerstroke. These rubber face seals restore proper CCV (crankcase ventilation) sealing at the left valve cover to help prevent oil seepage and blow-by mist.
- Package quantity: 4 gaskets
- Material: Rubber
- Application: Left-hand valve cover / crankcase breather face seals
- GTIN/UPC: 027067654014
Fitment
- 2003–2007 Ford Super Duty F-250 / F-350 / F-450 / F-550 (6.0L Powerstroke)
- 2003–2005 Ford Excursion (6.0L Powerstroke)
- 2003–2007 Ford E-350 / E-450 Super Duty (6.0L Powerstroke)
Cross Reference Items
- Ford: W301373
- Navistar/International: 1844156, 1844156C1
What’s Included
- (4) Left-side crankcase breather face seals (valve cover)
Notes
- Install on a clean, oil-free surface. Verify breather housing condition.
- Pairs well with fresh CCV filter/housing service if needed.
FAQ
Will these seals fit my 2003–2007 6.0L Powerstroke?
Yes. They service the left-hand valve cover breather on 2003–2007 F-Series, plus 2003–2005 Excursion and many E-Series vans listed above.
How many seals are in the package?
Four (4) rubber face seals—enough for the left-side breather interface.
Do I need any special tools?
Typically no—basic hand tools, a scraper/plastic razor, and a lint-free wipe with solvent to prep the surface.
What symptoms indicate these seals need replacement?
Oil residue around the breather housing, minor seepage on the valve cover, or elevated crankcase vapor leakage.
