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Dodge W150 Engine Crankcase Breather Hose Grommets

Dodge W150 Engine crankcase breather hose grommets

Starting at low prices, AutoBuffy stocks multiple engine crankcase breather hose grommets from top OE-quality brands. This rubber grommet seals the breather hose where it passes through the valve cover or engine block, preventing unmetered air leaks into the crankcase ventilation system. When it fails, the PCV system loses its vacuum seal, causing rough idle, oil leaks, and elevated emissions.

Signs your Dodge W150 needs a new crankcase breather hose grommet

  • Rough or unstable idle caused by unmetered air entering the intake through a cracked or collapsed grommet
  • Oily residue or visible oil seepage around the valve cover breather port where the grommet seats
  • Hissing or whistling sound at idle coming from the crankcase ventilation area near the breather hose connection
  • Check engine light with lean mixture or evap/PCV-related codes such as P0171 or P0507
  • Increased oil consumption with no obvious external leak — crankcase pressure pushes oil past worn seals when the grommet fails to hold vacuum
  • Visible cracking, flattening, or brittleness on the grommet itself during a visual inspection of the valve cover breather port

Which crankcase breather hose grommet should you buy for your Dodge W150?

The main decision is material quality and fitment precision. OEM-spec grommets match the original wall thickness, inner diameter, and durometer rating engineered for your engine's crankcase pressure range. Aftermarket options vary widely, so matching the grommet's inner and outer diameter to your breather hose and port is critical to maintaining an airtight seal.

OEM-equivalent (exact match)
Best for
Owners who want a direct, no-adjustment replacement
What you get
Precise dimensions, correct durometer rubber, guaranteed port and hose fitment
Premium aftermarket (e.g., silicone)
Best for
High-heat applications or engines with elevated crankcase temps
What you get
Higher heat and oil resistance than standard rubber, longer service life in demanding conditions
Standard aftermarket (EPDM rubber)
Best for
Budget-conscious repair or second vehicles
What you get
Functional seal at lower cost; verify inner/outer diameter matches before ordering
Universal grommet (cut-to-fit)
Best for
Custom engine builds or discontinued OEM applications
What you get
Flexible fitment option, requires trimming to correct ID/OD; not ideal for stock applications

Replacing the crankcase breather hose grommet on a Dodge W150

Easy⏱ 15–45 minutesFlathead screwdriver or trim removal pry toolNeedle-nose pliersClean shop ragsBrake cleaner or degreaser

Remove the breather hose from the valve cover port, then use a flathead screwdriver or trim tool to carefully pry out the old grommet — avoid gouging the port bore. Clean the bore thoroughly, press the new grommet in by hand until it seats flush and evenly, then reattach the breather hose. Start the engine and confirm no oil seepage or vacuum leak noise at the repair site.

Frequently asked questions

How much does it cost to replace crankcase breather hose grommets on a Dodge W150?
Parts start at low prices at AutoBuffy. The grommet itself is inexpensive, but total cost depends on whether you also replace the breather hose at the same time — a smart move since both wear together. DIY labor is minimal; shop labor is typically under an hour. Replacing both parts together saves a return visit.
Can a bad crankcase breather hose grommet cause a check engine light on a Dodge W150?
Yes. A failed grommet breaks the sealed crankcase ventilation circuit, allowing unmetered air into the intake manifold. This can trigger lean fuel trim codes such as P0171 or idle control codes like P0507. The light will not clear permanently until the vacuum leak is repaired and the seal is restored.
How long does a crankcase breather hose grommet last on a Dodge W150?
Most rubber grommets last several years under normal conditions, but heat cycling, oil exposure, and ozone degradation cause the rubber to harden and crack over time. Grommets on engines that run hot or use conventional oil may degrade faster. Inspect the grommet whenever you service the PCV system or replace the valve cover gasket.
Is it safe to drive a Dodge W150 with a cracked crankcase breather hose grommet?
Short distances are possible, but it is not recommended. A cracked grommet allows a vacuum leak that worsens idle quality and fuel trims, and it permits oil mist to escape the crankcase. Continued driving with elevated crankcase pressure can accelerate oil seal wear and contaminate sensors or components in the engine bay.
Should I replace the breather hose at the same time as the grommet on my Dodge W150?
Yes, in most cases. The breather hose and grommet experience the same heat, oil, and pressure cycles, so they tend to degrade on a similar timeline. If the grommet has failed, inspect the hose for softness, cracking, or oil saturation. Replacing both together eliminates the risk of a comeback repair within a short period.
How do I know if the grommet or the breather hose is causing the oil leak on my Dodge W150?
Clean the area thoroughly with brake cleaner or degreaser, then run the engine and inspect. Oil weeping directly from the valve cover port indicates a failed grommet seal. Oil along the hose body or at the far connection point suggests hose deterioration. In many cases both components leak simultaneously and should be replaced together.

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