The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What kind of plugs for exhaust manifolds?

**brakenit** · 08-12-2012, 10:01 AM

I special ordered some stainless plugs. The one's on my 250 were M18x1.5, the same size as most oxygen sensors, which is what the plugs I bought were supposed to be for.

08-12-2012, 10:01 AM	#3
brakenit Active Member Join Date: Mar 2004 Location: Indiana Posts: 198	Re: What kind of plugs for exhaust manifolds? I special ordered some stainless plugs. The one's on my 250 were M18x1.5, the same size as most oxygen sensors, which is what the plugs I bought were supposed to be for.