Graco 164705 Piston Rod

Genuine OEM Graco 164705 Piston Rod for selected Monark air motors—ideal replacement when addressing wear or scoring. Confirm your air motor model/series for a perfect fit.

Fits: 205-997 (Series K), 215-363 (Series D), 222-791 (Series D), 206-955 (Series K)
Purpose: links air piston to drive for smooth, reliable output
Tip: inspect/replace related seals and bearings during service
Brand: Graco (OEM)

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Description

Compatibility & Key Details

Compatible Machines / Assemblies

The Graco 164705 Piston Rod is used in the following Monark™ air motor assemblies:

Monark Air Motor 205-997 (Series K)
Monark Air Motor 215-363 (Series D)
Monark Air Motor 222-791 (Series D)
Air Motor 206-955 (Series K)

Product Overview

The Graco 164705 Piston Rod (often listed as “Rod, Piston”) is a genuine OEM component for Monark-style air motors. It links the air piston to the drive assembly, maintaining smooth reciprocation and reliable pump output.

Key Highlights

OEM Fit: Built to Graco specifications for correct length and finish.
Critical Link: Transfers air piston motion to the pump drive.
Restores Performance: Ideal when addressing wear, scoring, or misalignment issues.

Specifications

Item	Detail
Part Number	164705
Part Name	Piston Rod (Rod, Piston)
Assembly Type	Monark Air Motor (selected models/series)
Compatibility	205-997 (K), 215-363 (D), 222-791 (D), 206-955 (K)
Brand	Graco (Genuine OEM)

Fitment Guidance

Match your air motor model & series (e.g., 215-363 Series D) before ordering.
Inspect the old rod for wear, scoring, or bending when diagnosing output issues.
Replace associated seals and bearings as recommended in the motor’s service procedure.

Frequently Asked Questions

It connects the air piston to the drive mechanism inside a Monark air motor, ensuring the piston’s reciprocating motion is transferred efficiently to the pump section.

It fits the Monark air motor assemblies listed at the top of this page:

205-997 (Series K)
215-363 (Series D)
222-791 (Series D)
206-955 (Series K)

If you need a sprayer-by-name mapping, confirm the air motor model installed in that sprayer.

Check your equipment’s air motor model and series on the identification plate or parts manual. Match it to the list above. For edge cases (custom rigs, rebuilds), compare dimensions and consult the motor’s service manual.