On a 7.3 Powerstroke, piston oil jets (piston cooling jets) are there for one reason: aim oil at the underside of the piston crown to pull heat out of the piston (and maybe to lube the wrist pin). When you’re rebuilding a 7.3, the jets are cheap insurance—because a loose or broken jet can become a catastrophic “surprise part” inside the oil pan.

Check Them Out: https://www.riffraffdiesel.com/welded-piston-oil-jets/

 

Why these are TIG-welded

The whole point is durability: customers have found broken jets in the oil pan, or discovered originals loose and ready to come apart during teardown. Outside the loss of piston cooling, a broken jet can work its way into areas where it can cause serious damage. More often than not, they just sit in the pan, but the potential for big damage is real.

 

What’s included

(8) TIG-welded oil jets for 94–03 7.3L Powerstroke.

Don’t reuse the OE bolts 

It’s strongly recommended to replace the oil jet retaining bolts when installing these.

We stock the matching Piston Oil Jet Bolt Set (8) (W300052) for 94–03.

 

Torque spec

Tighten piston oil jet bolts to 11 N·m (98 lb-in).

 

When to use these

• Any 7.3 rebuild where you want to eliminate “loose jet” risk.
• If you’ve already found a broken jet in the pan or suspect one came apart.

 

If you’re building a 7.3 you plan to keep, welded piston oil jets are one of those small parts that help the bottom end live a long, boring life—in the best way possible.