Description
Overview:
The Piston Bumper for Hikoki Hitachi nailers, OEM No. 885289, is a Genuine OEM component designed to absorb the impact at the end of the piston/driver stroke. Made from a durable polyurethane/elastomer compound, it cushions the piston, protects the cylinder and driver blade, and helps maintain consistent driving depth. This bumper is used in gas and pneumatic framing and concrete nailers, including popular models such as GCN 40T and GFN 3490. Replacing a worn or cracked bumper is routine maintenance that prevents costly internal damage and restores smooth operation. This is a Genuine Hikoki/Hitachi part, suitable for machines sold under Hikoki and legacy Hitachi branding, and is engineered for a direct fit and reliable service life.
Key Features:
- Genuine OEM Hikoki/Hitachi spare part for assured compatibility and performance
- OEM No. 885289 for precise identification and direct replacement
- Impact-absorbing polyurethane/elastomer construction reduces shock and wear
- Protects cylinder and driver blade, helping prevent cracks and premature failure
- Supports consistent nail driving depth and smoother recoil characteristics
- Direct-fit design for straightforward installation with standard hand tools
- Suitable for gas nailers commonly used in framing and concrete/steel fastening
- Helps restore tool performance when bumpers have hardened, split, or compressed
- Compatible with selected Hikoki, Hitachi, Metabo HPT/Tanaka-badged models
Typical Applications:
Used during servicing of Hikoki/Hitachi gas and pneumatic nailers to maintain correct cushioning at the end of the piston stroke. Ideal when tools show increased recoil, inconsistent drive depth, or internal knocking noises. Common in framing, first fix carpentry, formwork, and concrete/steel pinning tasks where regular maintenance keeps tools reliable on site.
Also known as:
Driver bumper, piston stop, shock absorber, urethane bumper, cylinder bumper, cushion, end-of-stroke bumper, or nail gun piston buffer. Often referred to as a nailer bumper or driver cushion within service manuals and repair kits.
Fits Models:
GCN 40T, GFN 3490, GNC 40, NC 40G, NR 90GC2, NR 90GR2
Alternate Part Numbers:
885289
Product Specifications
| L&S Part No. | HKK885289 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Hikoki |
| OEM No. | 885289 |
| Unit of Sale | 1 |
| Machine Type | Nailer |
| Fits Brands | Hikoki |
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