You’ll want grommets that seal like a gasket, resist heat/oil, and fit your valve‑cover hole and PCV stem. Top picks include Performance 5339, Autotecnica F6AZ6A892BA, Dorman 42055/42062, Beck/Arnley 039‑6428, SHLPDFM, Autycle 1.25″ grommets, GSKMOTOR, MOTOKU kit, and similar SBC/BBC/SBF replacements; they’re direct‑fit or stepped designs made from high‑temp rubber or silicone for long life. Keep dimensions and material ratings in mind, and keep going to see fitment tips and buy‑guidance.
| Performance 5339 PCV Breather Grommets (2-Pack) |
| Best Fit for Classics | Purpose: PCV / breather grommet for valve covers | Material: Rubber | Compatibility Type: Universal/classic American V8 valve covers (SBC/BBC/SBF, steel & aluminum) | VIEW LATEST PRICE | Read Our Analysis |
| Autotecnica F6AZ6A892BA PCV Valve Grommet |
| OE Replacement | Purpose: PCV valve grommet (replacement) | Material: Elastomer / OE-quality rubber material | Compatibility Type: Direct OE replacement for specified Ford applications | VIEW LATEST PRICE | Read Our Analysis |
| Rubber PCV/Breather Grommets for Aluminum Valve Covers |
| Aluminum Valve Specialist | Purpose: PCV / breather grommet for valve covers | Material: Rubber | Compatibility Type: Aluminum valve covers (SBC, BBC, SBF 350) | VIEW LATEST PRICE | Read Our Analysis |
| Dorman PCV Valve Grommet (42055) |
| Reliable Replacement | Purpose: PCV valve grommet (replacement) | Material: Rubber (durable material) | Compatibility Type: Select vehicle-specific applications (verify fit) | VIEW LATEST PRICE | Read Our Analysis |
| Beck/Arnley 039-6428 PCV Valve Grommet |
| Premium OEM Quality | Purpose: PCV valve grommet (replacement) | Material: Rubber | Compatibility Type: Application-specific (matches OE fit) | VIEW LATEST PRICE | Read Our Analysis |
| Dorman PCV Valve Grommet (42062) |
| Precision Fit | Purpose: PCV valve grommet (replacement) | Material: Rubber (quality material) | Compatibility Type: Select vehicle-specific applications (verify fit) | VIEW LATEST PRICE | Read Our Analysis |
| SHLPDFM Rubber PCV Breather Grommets (2pcs) |
| Polished Cover Ready | Purpose: PCV / breather grommet for aluminum valve covers | Material: Rubber | Compatibility Type: Aluminum valve covers (SBC, BBC, SBF 350) | VIEW LATEST PRICE | Read Our Analysis |
| MOTOKU Crankcase Vent Hose & PCV Valve Kit |
| Complete Kit | Purpose: Crankcase vent / PCV vent grommet(s) in a kit | Material: Rubber grommet(s) included (with hoses/valves) | Compatibility Type: Specific Jeep models (listed years/models) | VIEW LATEST PRICE | Read Our Analysis |
| Rubber PCV Breather Grommets 1.25″ OD (2pcs) |
| Heavy-Duty Steel Fit | Purpose: PCV / breather grommet for valve covers | Material: Thick rubber | Compatibility Type: Chrome steel and aftermarket stamped steel valve covers (SBC/BBC/SBF/BBF) | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Performance 5339 PCV Breather Grommets (2-Pack)
Suppose you’re restoring or upgrading a classic American V8 and need a simple, reliable seal, the Performance 5339 PCV breather grommets (2-pack) are built for you — they snap into 1.25″ filler-breather holes and provide a tight, OEM-quality rubber fit for SBC/BBC/SBF engines. You’ll get two black, high-quality rubber grommets that fit steel or aluminum valve covers, accept 0.75″ and 1″ inner diameters, and mate to 1.38″ inlets. Installation’s quick and secure, with ventilation holes and universal valve cover compatibility. They meet or exceed OEM standards; contact the seller for support or warranty details.
- Purpose:PCV / breather grommet for valve covers
- Material:Rubber
- Compatibility Type:Universal/classic American V8 valve covers (SBC/BBC/SBF, steel & aluminum)
- Installation:Easy / minimal time; push-in installation
- Outer Diameter (Valve Cover Hole Fit):Fits 1.25″ (1 1/4″) valve cover hole (size listed 1.315″ / inlet 1.38″)
- Intended Durability / Resistance:High-quality rubber, meets/exceeds OEM standards; ventilation fit
- Additional Feature:Dual inner diameters
- Additional Feature:Universal V8 fitment
- Additional Feature:Includes two grommets
Autotecnica F6AZ6A892BA PCV Valve Grommet
In case you need a direct-fit replacement that matches factory specs, the Autotecnica F6AZ6A892BA PCV valve grommet is a top choice for Ford owners and DIY mechanics. You’ll replace cracked or missing factory grommets with an OE-dimension part that installs directly and looks original. It vents blow-by gases and routes unburned gasoline vapors from the crankcase into the intake manifold, helping restore proper air/fuel ratio and engine performance. Made from heat- and vapor-resistant materials, it withstands engine conditions and preserves the PCV system seal. Install it quickly to immediately restore sealing and proper PCV function.
- Purpose:PCV valve grommet (replacement)
- Material:Elastomer / OE-quality rubber material
- Compatibility Type:Direct OE replacement for specified Ford applications
- Installation:Direct replacement, straightforward install
- Outer Diameter (Valve Cover Hole Fit):Matches OE grommet dimensions (vehicle-specific OD per OE)
- Intended Durability / Resistance:Resists intense engine heat and vaporized oil
- Additional Feature:OE-dimension match
- Additional Feature:Heat-resistant material
- Additional Feature:Restores factory sealing
Rubber PCV/Breather Grommets for Aluminum Valve Covers
Should you’re installing or replacing PCV parts on an aluminum valve cover, these 2PCS rubber grommets are ideal because they fit a standard 1.25″ valve cover hole and accept a 3/4″ push-in PCV valve or breather neck without modification. You’ll get black rubber grommets from GSKMOTOR compatible with SBC, BBC, and SBF 350 covers. They measure 1.25″ O.D. and 3/4″ I.D., resist high and low temperatures, and stand up to wear for durable service. You install them directly—no cutting or adapters. GSKMOTOR offers 30-day returns and customer support in case questions or issues arise.
- Purpose:PCV / breather grommet for valve covers
- Material:Rubber
- Compatibility Type:Aluminum valve covers (SBC, BBC, SBF 350)
- Installation:Direct installation, no modification required
- Outer Diameter (Valve Cover Hole Fit):O.D. 1 1/4″
- Intended Durability / Resistance:High/low temperature resistant; wear-resistant
- Additional Feature:3/4″ push-in accept
- Additional Feature:High/low temp resistant
- Additional Feature:For aluminum covers
Dorman PCV Valve Grommet (42055)
Should you’re after a direct-fit replacement that restores original PCV grommet function without fuss, the Dorman 42055 is a smart pick—it’s machined for durability and matches OEM fit on compatible models, so you can swap it in and get the system sealing properly again. You’ll find it listed as 42055 (also 420553, 10198949, 9776721) and it’s lightweight at 0.01 ounces with compact dimensions. Dorman engineers it to restore failed originals, using quality materials for longer service life. Verify fit with the garage tool for make, model, and trim. Supported through Dorman’s U.S.-based experts; 30-day Amazon return applies.
- Purpose:PCV valve grommet (replacement)
- Material:Rubber (durable material)
- Compatibility Type:Select vehicle-specific applications (verify fit)
- Installation:Direct replacement; installs to match original
- Outer Diameter (Valve Cover Hole Fit):OE-matched dimensions (vehicle-specific)
- Intended Durability / Resistance:Durable construction, long service life
- Additional Feature:Vehicle-specific listing
- Additional Feature:Backed by U.S. support
- Additional Feature:Machined exterior finish
Beck/Arnley 039-6428 PCV Valve Grommet
In case you need a direct, OE-quality replacement that holds up under heavy use, the Beck/Arnley 039-6428 PCV valve grommet is a solid pick — it’s made from durable rubber and matches original form, fit, and function so you can swap it in without guessing. You’ll get an application-specific part engineered to fit your vehicle correctly, avoiding leaks and misalignment. The high-quality construction resists heat, oil, and vibration, so it endures harsh operating conditions. Install is straightforward, maintenance-free, and reliable. Check product details for compatibility, but should it match your model, this grommet performs like the factory piece.
- Purpose:PCV valve grommet (replacement)
- Material:Rubber
- Compatibility Type:Application-specific (matches OE fit)
- Installation:Direct replacement installation
- Outer Diameter (Valve Cover Hole Fit):OE-matched dimensions (vehicle-specific)
- Intended Durability / Resistance:Durable rubber material for harsh conditions
- Additional Feature:OE form/fit/function
- Additional Feature:Application-specific design
- Additional Feature:Durable rubber construction
Dorman PCV Valve Grommet (42062)
Should you’re after a straightforward, OEM-fit replacement, the Dorman 42062 PCV valve grommet is a smart pick for DIYers and mechanics who need a reliable fix that snaps into place and restores proper sealing. You’ll get a direct replacement that matches original fit and function, with dimensions of 0.691 in ID, 1.191 in OD, and 0.641 in thickness. It’s built from quality materials for long service life and backed up by U.S.-based product experts with decades of automotive experience. Before you install, verify compatibility through entering your vehicle’s make, model, and trim into the garage tool.
- Purpose:PCV valve grommet (replacement)
- Material:Rubber (quality material)
- Compatibility Type:Select vehicle-specific applications (verify fit)
- Installation:Intended for direct replacement; verify fit
- Outer Diameter (Valve Cover Hole Fit):OD 1.191″ (listed for this Dorman part)
- Intended Durability / Resistance:Made from quality materials for reliable long service life
- Additional Feature:Exact dimensional specs
- Additional Feature:Garage-fit verification tool
- Additional Feature:Engineered long service life
SHLPDFM Rubber PCV Breather Grommets (2pcs)
Should you run aluminum valve covers on small- or big-block Chevy engines and need a simple, reliable seal, the 2-piece SHLPDFM rubber grommets are a tight fit for 3/4″ push-in PCV valves or breathers—O.D. 1 1/4″ to match the cover hole and I.D. 3/4″ for the valve neck. You’ll find the pair designed specifically for SBC, BBC, and SBF 350 aluminum covers, including original, aftermarket polished, or chromed types. The dimensions correspond to common PCV valve applications, so installation’s straightforward: push the grommet into the cover, then insert the 3/4″ valve. Contact the seller with questions.
- Purpose:PCV / breather grommet for aluminum valve covers
- Material:Rubber
- Compatibility Type:Aluminum valve covers (SBC, BBC, SBF 350)
- Installation:Direct installation; fits 3/4″ PCV valves
- Outer Diameter (Valve Cover Hole Fit):O.D. 1 1/4″
- Intended Durability / Resistance:Durable rubber suitable for aluminum covers
- Additional Feature:Fits polished/chromed covers
- Additional Feature:Accepts 3/4″ breather neck
- Additional Feature:Seller support available
MOTOKU Crankcase Vent Hose & PCV Valve Kit
Should you own a late‑90s to initial‑2000s Jeep Grand Cherokee, Wrangler, or Cherokee and need a direct, budget‑friendly replacement for worn crankcase vent components, the MOTOKU Crankcase Vent Tube Breather Hose & PCV/CCV Vent Valve Elbows Grommet Kit is a solid pick — it’s built to drop in for OE part numbers like 53013360AA and 2946079, saving you time on fitment and installation. You’ll get the hose, elbows and grommets intended for those Jeep models, a 7.4‑ounce MOTOKU unit (Mfg. P/N 53013360AA), and broad marketplace availability with a 4.3/5 user rating. Returns follow seller/platform policies.
- Purpose:Crankcase vent / PCV vent grommet(s) in a kit
- Material:Rubber grommet(s) included (with hoses/valves)
- Compatibility Type:Specific Jeep models (listed years/models)
- Installation:Included as part of direct-fit kit for listed models
- Outer Diameter (Valve Cover Hole Fit):Grommet sized to fit specified Jeep valve/vent locations (kit-specific)
- Intended Durability / Resistance:Designed to replace OEM parts; built for engine conditions
- Additional Feature:Complete vent hose kit
- Additional Feature:Vehicle-model specific fit
- Additional Feature:Replaces multiple OEM parts
Rubber PCV Breather Grommets 1.25″ OD (2pcs)
In case you’re updating a small-block Chevy or swapping in aftermarket stamped steel covers, these Autycle rubber PCV breather grommets (1.25″ O.D., 1″ I.D., sold as a two-pack) make a simple, durable replacement — they’re heat- and oil-resistant and sized to fit all chrome and stamped steel valve covers commonly used on SBC 350 applications. You’ll get two thick-rubber grommets (O.D. 1.25″, I.D. 1″) that work with PCV valves and breather openings on SBC, BBC, SBF and BBF valve covers. They’re lightweight, OEM-style, supported through seller returns and manufacturer warranty, and replace worn factory grommets cleanly.
- Purpose:PCV / breather grommet for valve covers
- Material:Thick rubber
- Compatibility Type:Chrome steel and aftermarket stamped steel valve covers (SBC/BBC/SBF/BBF)
- Installation:Direct replacement for valve cover holes; push-in PCV/breather fit
- Outer Diameter (Valve Cover Hole Fit):O.D. 1 1/4″
- Intended Durability / Resistance:Thick rubber resistant to heat and oil
- Additional Feature:1″ inner diameter
- Additional Feature:Thick oil-resistant rubber
- Additional Feature:Fits stamped steel covers
Factors to Consider When Choosing Emission Pcv Valve Breather Grommets
Upon choosing emission PCV valve breather grommets, you’ll want to prioritize material durability and the right size and fit for a tight seal. Check for heat and oil resistance so the grommet lasts under engine conditions and makes installation easy. Finally, confirm compatibility with your engine to avoid leaks or premature failure.
Material Durability
Although often overlooked, the grommet material determines how long your PCV valve breather will survive under heat, oil, and ozone exposure, so pick high-temperature rubber like EPDM or silicone that stays elastic above 200°F and resists petroleum vapors. You should favor compounds proven against oil and blow-by vapors to avoid swelling and breakdown. Check for ozone and weathering resistance to prevent surface crazing in under-hood environments. Balance shore hardness and flexibility: moderately soft rubber gives a tighter seal and better vibration isolation, but avoid overly soft materials that can extrude or tear. Finally, prioritize elastomers with low compression set so the seal retains shape after repeated thermal cycles, maintaining leak-free performance over time.
Size And Fit
Material choice matters, but fit determines whether your PCV breather will seal and function. Measure the valve cover hole outer diameter (often 1.25″) and pick a grommet with a matching O.D. for a snug press-fit that avoids gaps. Confirm the grommet inner diameter matches the PCV or breather stem—common I.D.s are 0.75″ and 1.00″—so the valve or hose seats securely. Check dual-diameter or stepped grommets whenever you need to adapt between different stem sizes or hose connections. Verify grommet thickness and flange dimensions to guarantee proper sealing against steel or aluminum valve covers and to prevent blow-by leaks. If replacing OEM parts, match O.D., I.D., and thickness to maintain original routing and vacuum integrity.
Heat And Oil Resistance
Because the engine bay subjects grommets to constant heat and oil exposure, pick compounds rated for continuous temperatures of at least 200–250°F and proven resistant to oil and vapor. You should choose silicone or high-temp rubber that won’t harden or crack under those conditions. Verify the material’s resistance to crankcase oil and fuel vapors so it won’t swell, soften, or deteriorate. Check thermal aging or ozone-resistance data — hours-to-failure figures help predict long-term durability through heat cycles. Prefer grommets with thicker cross-sections or reinforced lips; they keep the seal intact as parts expand and contract. Avoid cheap, unspecified elastomers with no temperature or chemical ratings, since they commonly fail sooner from embrittlement or oil degradation.
Installation Ease
Whenever you’re picking a PCV/breather grommet, prioritize fit and simple hand-fit installation: exact outer and inner diameters that match the valve cover hole and stem (common O.D./I.D. pairs like 1.25″ with 3/4″ or 1″) let you push the grommet in without trimming or force. Choose flexible, heat- and oil-resistant rubber that compresses slightly for a tight seal and quick hand-press seating into steel or aluminum covers. Prefer a lined flange or stepped profile so the grommet sits flush and resists popping under vibration, reducing adhesives or clamps. Make certain the neck I.D. matches the PCV or hose (0.75″ or 1″) for direct push-on connection. Finally, verify an exposed lip or adequate neck length so you can remove the grommet with basic tools for fast replacements.
Compatibility With Engines
While you’re choosing a PCV or breather grommet, focus on fit with your specific engine—size, profile, and compound directly affect sealing and longevity, especially on hot V8s or high-displacement motors. Verify the outer diameter matches the valve cover hole (common 1.25″ O.D.) so it seats securely in steel or aluminum covers. Check the inner diameter to accept your PCV valve or breather neck—typical I.D. options are 3/4″ or 1″ depending on stem size. Confirm the rubber compound resists heat and oil for long-term service. Match dual- or stepped-bore designs whenever your cover or plumbing needs two inner diameters for adapters or elbows. Finally, make certain thickness and flange profile suit flat or raised lips to maintain a leak-free seal.
