Graco 15F855 Pump Pin
$23.60
In Stock
The Graco 15F855 Pump Pin is a genuine OEM part designed for secure connection between the pump and drive assembly. Ideal for maintaining pump stability and reliable performance.
- Fits LineLazer IV 3900
- Fits GMAX 3400
- Fits GMAX II 3900
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Overview & Key Details
Compatible Machines
- Graco LineLazer IV 3900 (Airless Line Striper)
- Graco GMAX 3400 (Gas Airless Sprayer)
- Graco GMAX II 3900 (Gas Airless Sprayer)
Tip: 15F855 is the pump pin for the models above; some closely related machines (e.g., 5900 variants) use a different pin (15F856). Always verify with your unit’s parts manual.
About the Graco 15F855 Pump Pin
The Graco 15F855 Pump Pin is an OEM hardware component that secures the pump linkage/connecting rod assembly in select Graco line stripers and gas airless sprayers. Using the correct OEM pin maintains proper pump alignment and reliable priming/pressure performance.
Key Features
- Genuine OEM part for precise fit and durability
- Beveled ends for easy installation and secure seating
- Critical interface between pump and drive components
Specifications
| Part Number | 15F855 |
|---|---|
| Description | Pin, Pump (linkage/pump interface) |
| Approx. Size | ~1.2125" (30.80 mm) length × 5/16" diameter; 45° bevel on both ends |
| Category | OEM hardware & fasteners |
| Replaces / Related | For 5900 variants use 15F856 (check model manual) |
Fitment Notes
- Engineered for the models listed under Compatible Machines.
- If your plate/serial tag indicates a different series (e.g., 5900), confirm the pin number in your parts manual before ordering.
Frequently Asked Questions
For many 5900 configurations Graco specifies pin 15F856, not 15F855. Check your exact model and manual before purchase.
Match your model (e.g., LineLazer IV 3900, GMAX 3400, GMAX II 3900) with the parts list in the official manual. If your model differs, verify the pin callout in the pump/drive diagram.
Yes—this is a genuine Graco OEM pump pin designed for proper fit and service life.
Depressurize the system, align the connecting rod and pump bore, and insert the beveled pin fully. Replace worn retaining springs/clips as needed and verify free movement before use.
Graco pins can vary across series. If your measurement doesn’t match (~1.21" length × 5/16" Ø with beveled ends), re-check your exact model and manual; you may require a different pin (e.g., 15F856).
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