Graco 184276 Displacement Rod

The Graco 184276 Displacement Rod is a precision stainless-steel pump rod designed for Dura-Flo 1800 lowers. It transfers the drive stroke to the piston, ensuring smooth and consistent fluid displacement during operation.

OEM Graco Part: 184276
Material: Stainless Steel for durability and corrosion resistance
Fits: Dura-Flo 1800 pump lowers
Use: Replaces worn or scored rods to restore pump performance

$1249.5

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Description

Replacement Overview & Fitment Guide

Compatible Machines

Use the list below as a quick check. Always confirm against your sprayer’s parts manual before ordering.

Graco Dura-Flo 1800 pump lowers (packages powered by NXT/Xtreme where the parts book specifies 184276).
Systems built with a Dura-Flo 1800 lower used for high-output protective coatings (verify by model/parts list).

About Graco 184276 Displacement Rod

The 184276 is the stainless-steel displacement (pump piston) rod used in select Dura-Flo lowers. It transmits the drive stroke to displace material inside the pump cylinder for consistent flow and pressure.

Key Benefits

OEM precision: Direct-fit, factory-spec geometry for smooth operation.
Stainless-steel construction: Resists scoring and corrosion in demanding coatings.
Restores performance: Replacing a worn rod helps recover prime, pressure stability, and finish quality.

When to Replace

Visible scoring, pitting, or wear on the rod surface.
Persistent pressure fluctuation, poor prime, or leakage from packings after packing changes.
Rod misalignment or abnormal noise in the lower.

Specs & Details

OEM Part	Graco 184276 Displacement Rod
Material	Stainless Steel (SS)
Series/Application	Dura-Flo 1800 pump lowers (check your specific parts list)
Function	Drives piston to displace fluid within the pump cylinder
Cross-Check	Confirm by model/serial and the lower’s illustrated parts breakdown (IPB)

Installation & Notes

Relieve system pressure and follow the service manual for your lower.
Inspect the cylinder bore and packings; replace if scored or worn.
Use proper torque on rod-to-piston connections as specified in your manual.

Frequently Asked Questions

Locate your sprayer’s lower (pump) model and check its Illustrated Parts Breakdown (IPB). Order the Graco 184276 Displacement Rod only if that exact number is listed for your lower assembly.

No—this listing is for the displacement rod only unless otherwise noted on the page. Packings, seats, and seals are sold separately in the correct OEM kits for your lower.

No—rods are lower-specific. Use only the part number specified by your lower’s manual. Mixing parts between series can cause damage or poor performance.

Scoring on the rod, leaking packings, loss of prime, pressure instability, or unusual noise from the lower are common signs the rod and/or cylinder need service.

Yes. The 184276 Displacement Rod is manufactured in stainless steel for durability and corrosion resistance in heavy-duty applications.