Graco 16X434 Piston Rod - Aftermarket | Bedford 57-4068

PriceQuantity

$ 301.61

Part #:

16X434

MPN:

57-4068

Manufacturer:

Bedford Precision Parts

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In Stock

Graco 16X434 Piston Rod - Aftermarket Replacement | Bedford 57-4068

This precision-machined piston rod restores smooth pump stroke and sealing integrity in Graco lower pump assemblies. Cross-referenced to OEM 16X434 and built as Bedford 57-4068, it features a hardened, polished surface to reduce packing wear, improve priming, and extend maintenance intervals in demanding airless applications.

Aftermarket Value Precision-Machined Industrial Duty

Why Choose This Piston Rod

Hardened alloy steel with chrome-polished bearing surface for long packing life.
Tight concentricity and finish help maintain prime and consistent output.
Direct aftermarket replacement referenced to factory dimensions.
Cost-effective rebuild option to refresh a worn pump lower.
Supported by Bedford’s industrial quality controls and traceability.

Typical Compatibility

Graco lower pump assemblies and repair kits that specify 16X434 in their parts lists.
Commonly used across professional airless rigs in the Ultra/Classic/Nova families where called out.
Suitable for contractor and industrial duty sprayers requiring a 16X434-style rod.

Always match the rod part number to your sprayer’s official parts diagram before ordering.

Aftermarket #	OEM #	Fits	Type	Material	Function	Pressure	Brand
Bedford 57-4068	Graco 16X434	Graco pump lowers and service kits that list 16X434 (verify model diagram)	Piston Rod	Hardened alloy steel, precision ground & polished	Drives pump piston; provides sealing surface for packings	Supports typical airless working pressures up to 5000 PSI*	Aftermarket replacement

*Do not exceed the lowest rated component in your sprayer system.

Installation Notes

Relieve pressure, flush fluid section, and disconnect power/air per safety manual.
Remove the pump lower and disassemble per your model’s service instructions.
Inspect cylinder, piston, and packings; replace worn items while the pump is open.
Lubricate new seals and install the piston rod, observing orientation and torque specs.
Reassemble, prime with compatible solvent/paint, and check for leaks and smooth stroke.

Installer Tip: Pre-soak leather or composite packings (if used) per manual to ensure proper sealing on first startup.

When to Rebuild / Replace

Visible scoring or pitting on the rod surface.
Premature packing wear, leakage, or loss of prime.
Inconsistent pressure/output despite new seals.
Rod runout causing vibration or uneven wear.

Feature	Bedford Aftermarket	OEM (Graco)
Fit & Geometry	Built to OEM-referenced dimensions for 16X434 applications	Factory original rod
Surface Finish	Precision ground & polished to reduce packing wear	OEM finish per model spec
Value	Lower cost with industrial quality controls	Premium OEM pricing
Availability	If in stock, ships from Bedford Precision Parts in Bedford Hill, New York.	Subject to OEM distribution stock

FAQs

Is Bedford 57-4068 a direct replacement for Graco 16X434?+

Yes. Bedford 57-4068 is produced as an aftermarket alternative referenced to the OEM 16X434 piston rod. Verify against your sprayer’s parts list.

How do I confirm this rod fits my sprayer?+

Check your model’s exploded diagram or bill of materials; the rod must be listed as 16X434. If unsure, share your model and pump lower number with support.

Should I replace packings when installing a new rod?+

It’s recommended. A fresh rod plus new packings ensures proper sealing and extends service life. Inspect the cylinder and piston for wear at the same time.

What lubricants are recommended during assembly?+

Use the lubricant specified in your Graco service manual (often light machine oil or compatible pump grease) and pre-condition any leather packings as directed.

How quickly can this ship?+

If available, orders ship from Bedford Precision Parts (Bedford Hill, NY) with tracking. Expedited options can be selected at checkout.