This is a Wilin piston bumper, part number 884-959 / 884959, specifically for NR90AD nailers and compatible with NR90AE, NR90ADPR, NR90AE(S), NR90AF, and NV90AG models.
It's made of metal, so it's durable and won't wear out as fast as cheap rubber ones.
Brand new, never used, and comes in packaging.
Package dimensions are about 5.
28 x 3.
82 x 3.
15 inches, weight is 0.
77 pounds – small but critical part.
If your nail gun is misfiring, losing power, or acting sluggish, this piston bumper could be the worn part that needs swapping.
It's an auto part position rear, but really it's for pneumatic nailers.
Great for DIY repairs or professional maintenance.
Made by Wilin, a decent brand for replacement parts.
Check your nailer model, and if it matches, this is a cheap fix to get your tool back in action.
