Graco 243179 Piston Rod

The Graco 243179 Piston Rod is an OEM drive rod that restores smooth pumping action and consistent spray pressure on select Graco sprayers. Use it to fix pulsation and hard-priming issues.

Reliable up-stroke and down-stroke motion
Reduces pulsation and loss of prime
Fits 190ES, ST, DT, SP, 230ES, ZipSpray 1900 (verify series)
Durable OEM construction

Retail Price: $92.25

You save: $19.74 (21.40%)

Our Price: $72.51

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Description

Compatible Machines — Graco 243179 Piston Rod

Use the list below to quickly confirm whether the Graco 243179 Piston Rod matches your sprayer series. Always verify your exact model/series tag and fluid-section before ordering.

Graco 190ES (select series/variants)
Graco ST series contractor sprayers (early/first-gen, e.g., 490 ST with compatible fluid section)
Graco DT series (where specified by parts diagram)
Graco SP series (where specified by parts diagram)
Graco 230ES (specific series with matching fluid section)
ZipSpray 1900 (when listed by the manufacturer/parts diagram)

Product Overview

The Graco 243179 Piston Rod is an OEM drive rod for select Graco airless sprayers. It links the drive mechanism to the fluid section to deliver the up-stroke and down-stroke that draws paint in and pushes it out. A worn or damaged rod can cause hard priming, pulsation, and premature packing wear.

Key Detail	Information
Part Number	243179
Type	OEM piston/drive rod for select Graco airless sprayers
Primary Use	Restores proper pump stroke and pressure consistency
Typical Symptoms When Worn	Pulsation, loss of prime, irregular pressure, faster packing failures
Fitment Reminder	Check sprayer model and series; confirm fluid-section/rod call-out in your manual/parts diagram

What’s Included

Graco 243179 Piston Rod (rod only)
Refer to your sprayer’s manual for any additional seals, pins, or retainers (sold separately if not specified)

Fitment Tips

Match the model + series on the data plate (e.g., 190ES with specific series letters).
Open the sprayer’s parts diagram and confirm the rod call-out number equals 243179.
If replacing a badly worn rod, inspect and consider replacing the packing kit at the same time.
Compare physical dimensions/end style with your removed rod to ensure a drop-in replacement.

Frequently Asked Questions

Check the model and series on your sprayer’s tag, then open its parts manual. The piston rod line item should list 243179. If your manual shows a different rod number, use that exact number instead.

It’s highly recommended. A worn rod often damages packing surfaces. Replacing the rod together with the correct packing kit helps restore prime, reduce pulsation, and extend service life.

Common signs include difficulty priming, pressure fluctuations, excessive packings wear, and unusual noise during the stroke. Visual scoring or a bent rod confirms replacement is needed.

Yes—243179 is an OEM Graco part number. Ensure your unit’s diagram calls out this exact number; avoid “will-fit” substitutions unless specified for your model/series.

Clean the pump bore, use the lubrication recommended by Graco, and follow torque specs in your service manual. After assembly, pressure-test with water or compatible solvent before spraying coatings.