Product ReviewsSpark Plug-U-Groove Header Plug Accel 8199

Great product equal to any of the other plugs out there

I have a worked 350 in a 51 Ford coupe. Car sits on an 83 GMC chassis so I had to get headers to clear everything and they are tight to the block. Regular sized plugs would not even come close to fitting. These shorty plugs work great and just clear the headers enough to get boots on. I did add spark plug wire covers as well. Very pleased with how it has worked out for meRead full review...

Verified purchase:  Yes | Condition: new | Sold by: holleyperformance

Great plugs

Looking for plugs that will work on your headers? Look no further these fit my 79 GMC truck great. I highly recommend these plugs for your llSBC 350'sSBCSBSSBCSBS
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Plugs extremely good.

Spark plugs made big difference in engine performance.

Works well

It may not be a lot but the shorty plug allows the socket to fit against the header on my chevy

Verified purchase:  Yes | Condition: new | Sold by: fresh-living72

good stuff

great plugs

Verified purchase:  Yes | Condition: new | Sold by: tennessee-perfo...

Work perfect for installing headers

Work really well!!!

Verified purchase:  Yes | Condition: new | Sold by: speedunlimited_...

Perfect fit

As described and perfect fit --not interferring with headers

Verified purchase:  Yes | Condition: new | Sold by: accel_mr.gasket

Good option for headers

Great for headers

Verified purchase:  Yes | Condition: new | Sold by: 804autotech67

Great plugs.

They gave me the extra clearance I need on my 350 chevy with headers

Verified purchase:  Yes | Condition: new | Sold by: accel_mr.gasket

Shortie Plugs

All Good