Graco 949117 Piston Assembly

The Graco 949‑117 Piston Assembly is a genuine OEM replacement designed to restore smooth pump operation and maintain consistent spray performance in heavy‑duty airless sprayers.

Part Number: 949‑117
Compatible With: Graco Big Rig, Contractor Grade, and Industrial Airless Pumps
Durable Construction: Precision machined for high-pressure performance
Professional Use: Ideal for industrial and commercial airless spraying

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Description

OEM Piston Assembly for High‑Pressure Airless Pumps

Compatible Machines

Graco “Big Rig” Airless Sprayers with replaceable pump pistons
Graco Heavy‑Duty Contractor Grade Airless Pumps
Industrial Airless Coating and Elastomeric Spray Systems
Graco Rebuildable Piston Pump Assemblies in 2K & Airless Coating Units

The Graco 949‑117 Piston Assembly is a genuine OEM piston replacement used in professional airless pump sections to maintain proper fluid displacement and consistent spraying performance under demanding conditions. It restores smooth pump action and helps retain pressure efficiency in compatible heavy‑duty units. :contentReference[oaicite:0]{index=0}

Key Features

Genuine OEM Piston — Factory‑made replacement part for Graco pumps for exact fit and performance. :contentReference[oaicite:1]{index=1}
Durable Construction — Precision machined to withstand high‑pressure airless spraying. :contentReference[oaicite:2]{index=2}
Critical Pump Component — Helps maintain consistent fluid displacement and pressure. :contentReference[oaicite:3]{index=3}
Professional Use — Suited for industrial, commercial, and contractor applications. :contentReference[oaicite:4]{index=4}

Specifications

Part Number	949‑117
Description	Piston Assembly for Airless Spray Pumps
Application	Replacement piston for OEM airless pump sections
Compatibility	Rebuildable Graco airless pumps and heavy‑duty sprayers
Type	Professional grade piston component

Product Overview

The Graco 949‑117 Piston Assembly is a fundamental pump component used in rebuilding or servicing industrial and contractor airless spray systems. As a genuine Graco replacement part, it ensures that the pump delivers smooth reciprocating action and proper fluid flow, which is critical for achieving consistent spray patterns and maintaining machine performance on demanding coatings. :contentReference[oaicite:5]{index=5}

Frequently Asked Questions

The piston assembly moves within the pump fluid section to displace coating material, helping generate proper pressure and fluid flow for airless spraying.

Check your machine’s parts manual for the piston assembly number and pump model. Genuine Graco part lists or service diagrams will show whether 949‑117 matches your unit’s pump assembly.

Replacement is recommended when the pump shows pressure loss, inconsistent spray output, or mechanical wear inside the fluid section that affects performance.