Got a fuel leak or a rough idle on your Chevy or GMC?

These little rubber o-rings might be the problem.

This is a bulk pack of 100 fuel injector o-rings from WLLW.

They're the right size for many Delphi fuel injectors found in a wide range of Chevrolet and GMC vehicles.
The size is 7.8mm in outer diameter and 3.71mm in cross-section?
Actually, 7.8mm is likely the inner diameter and 3.71mm the width?
Most likely it's 7.8mm ID x 3.71mm CS.
They're a direct replacement part.
They're brand new, made in China.

Having a 100-pack means you'll have plenty for multiple jobs, or you can replace all your injector o-rings at once.
It's a cheap fix that can solve vacuum leaks and fuel smells.
The manufacturer part number is simply \100pcs\ for the pack, and the OE/OEM part number references the size: 7.8*3.71mm.
They're for repairing Delphi fuel injectors.

If you're doing a fuel injector rebuild or replacement, always put in fresh o-rings.
This kit from WLLW has you covered.
Don't let a tiny rubber seal cause big problems.
Grab this pack and get your fuel system sealed up tight.