Valve Cover 1968 250 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Dude68** · 01-05-2025, 12:38 AM

Anyone know what the part is called that goes in the SIDE of valve cover where tube goes in? It is some kind of hard plastic grommet. I broke mine pulling the tube out and need another one.

**'68OrangeSunshine** · 01-05-2025, 01:47 AM

Quote:

Originally Posted by Dude68

Anyone know what the part is called that goes in the SIDE of valve cover where tube goes in? It is some kind of hard plastic grommet. I broke mine pulling the tube out and need another one.

It's not plastic. It WAS rubber, but must have hardened over time and contact with hot motor oil.
LMC's got 'em:
P/N:30-2520......$1.95....Grommet, Breather...1'' I.D., 1-1/4'' O.D.

When new, the Grommet is closed, like a plug. You have to cut a hole for your breather tube.

**1970cstblazer** · 01-05-2025, 08:16 AM

These are GM 3894337

**Dude68** · 01-05-2025, 10:04 PM

Thanks.

01-05-2025, 12:38 AM	#1
Dude68 Senior Member Join Date: Oct 2011 Location: Benton ar Posts: 222	Valve Cover 1968 250 Anyone know what the part is called that goes in the SIDE of valve cover where tube goes in? It is some kind of hard plastic grommet. I broke mine pulling the tube out and need another one. __________________ Joey

01-05-2025, 08:16 AM	#3
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,093	Re: Valve Cover 1968 250 These are GM 3894337 __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

01-05-2025, 10:04 PM	#4
Dude68 Senior Member Join Date: Oct 2011 Location: Benton ar Posts: 222	Re: Valve Cover 1968 250 Thanks. __________________ Joey

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