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Graco 178899 Piston Rod Aftermarket | Bedford 57-1406
PriceQuantity
178899
MPN:57-1406
Manufacturer:Bedford Precision Parts
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Graco 178899 Piston Rod Replacement for Bulldog 30:1 GH533 and King 63:1 Airless Sprayers Aftermarket by Bedford 57-1406
The Bedford 57-1406 Piston Rod is a premium aftermarket replacement for the Graco 178899 Piston Rod used in high-performance airless paint sprayers such as the Graco Bulldog 30:1, GH533, and King 63:1. This precision-engineered rod transmits the drive motion from the air motor to the fluid pump, delivering consistent pressure, smooth operation, and optimal coating transfer. Built from hardened stainless steel and polished for a mirror-smooth finish, it minimizes packing friction, prevents scoring, and resists corrosion in demanding industrial environments. Ideal for contractors spraying high-solids coatings, fireproofing, and protective materials, the Bedford 57-1406 offers long-lasting reliability and OEM-level precision - at a significantly lower cost.
Why Choose This Piston Rod
- Direct replacement for OEM Graco 178899 with exact tolerances and dimensions.
- Hardened stainless steel resists pitting, scoring, and premature wear.
- Polished finish extends packing life and reduces maintenance frequency.
- Restores spray pressure uniformity and fluid consistency across coatings.
Typical Compatibility
- Graco Bulldog 30:1 sprayers
- Graco GH533 systems
- Graco King 63:1 industrial sprayers
Always confirm part number compatibility in your equipment manual before ordering.
Technical Specifications
| Aftermarket | Bedford 57-1406 |
|---|---|
| OEM | Graco 178899 |
| Fits | Bulldog 30:1, GH533, King 63:1 sprayers |
| Type | Piston rod (fluid section linkage component) |
| Material | Hardened stainless steel, precision-ground and polished |
| Function | Transfers motion from the motor to the fluid pump to maintain spray pressure |
| Operating Pressure | Up to 7250 PSI (50 MPa) nominal system rating |
| Brand | Aftermarket by Bedford Precision Parts; replaces Graco |
Installation Notes
- Depressurize and disconnect the sprayer before service.
- Remove the fluid section; inspect old rod, packings, and sleeve for wear.
- Lubricate the new piston rod with compatible fluid before insertion.
- Install the rod squarely to prevent packing misalignment or scoring.
- Reassemble the lower and run a slow prime cycle to verify sealing.
Tech Tip: Replace packings and sleeves along with the piston rod during a rebuild to maintain optimal sealing and longevity.
When to Rebuild / Replace
- Rod shows visible scoring, rust, or pitting
- Frequent packing leakage or reduced pressure output
- Spray pulsation or inconsistent atomization
- Surface wear leading to packing failure or friction noise
Bedford vs OEM (Graco)
| Feature | Bedford Aftermarket (57-1406) | OEM (Graco 178899) |
|---|---|---|
| Fit & Function | Matches OEM specifications; installs without modification | Original equipment precision |
| Material | Hardened stainless steel with polished finish | Factory-grade hardened steel |
| Durability | Designed for extended life in abrasive and high-pressure use | Factory-rated performance |
| Availability | If in stock, ships from Bedford Precision Parts in Bedford Hill, New York. | Ships through OEM distribution |
| Value | OEM-grade performance at a lower aftermarket cost | Higher purchase price |
Frequently Asked Questions
Bedford 57-1406 replaces the Graco 178899 piston rod used in Bulldog 30:1, GH533, and King 63:1 airless pump lowers.
It’s crafted from hardened stainless steel and polished to minimize friction, wear, and corrosion during continuous-duty operation.
Yes. The Bedford 57-1406 is designed for rugged, high-output applications including protective coatings, epoxy, and fireproofing materials.
Absolutely. Always replace the rod with new packings and sleeve for a complete seal restoration and extended performance.
When in stock, Bedford parts typically ship within 24 hours from Bedford Hill, NY.
Rebuild your Graco sprayer with confidence. Order the Bedford 57-1406 Piston Rod today to restore pressure consistency and extend service life at a fraction of OEM cost.
