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Graco 168211 Connecting Rod Nut

Graco 168211 Nut, Connecting Rod is a critical pump hardware component used to secure the connection between the air motor and displacement rod for reliable spraying performance.

  • Thread Size: 3/4-10 UN
  • Used in King, Bulldog & Power-Flo pump systems
  • Ensures stable rod alignment and pump efficiency
  • Genuine Graco replacement hardware

Retail Price: $130.5
You save: $2.28 (1.75%)
Our Price: $128.22
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Graco 168211 Nut, Connecting Rod – Replacement Part Overview

Compatible Machines

This Nut, Connecting Rod is commonly used in several Graco industrial displacement pump systems. Machines known to use this part include:

  • Graco King Series Pumps (e.g., 218-174, 220-505)
  • Graco Bulldog Series Pumps (e.g., 222-638, 222-526)
  • Graco Power-Flo Series Pumps (e.g., 222528, 223986)
  • Other Graco Pumps using 3/4-10 thread connecting rod design

Part Details

The Graco 168211 Nut, Connecting Rod is a threaded hardware component found within the displacement pump assembly. It is responsible for securing the connection between the air motor rod and the displacement rod, maintaining structural alignment and smooth pumping performance.

Specification Details
Part Number 168211
Component Name Nut, Connecting Rod
Thread Size 3/4-10 (UN Thread)
General Use Displacement Pump Rod Fastening
Installation Location Rod linkage between air motor/piston and displacement rod

Why This Part Matters

Without a securely installed connecting rod nut, the pump system may experience misalignment, reduced performance, or mechanical failure. Replacing a worn or damaged nut is essential to ensure stable and efficient pumping performance over extended operating periods.

Installation Notes

  • Verify thread match before installation.
  • Tighten to recommended torque specifications provided in your pump's service manual.
  • Inspect rod alignment after installation.
  • Use only genuine replacement hardware for long-term durability.

Frequently Asked Questions

It secures the internal connection between the air motor and displacement rod to support smooth operation of the pump.

The thread size is 3/4-10 UN in pump models that specify part 168211.

Yes. Using authentic replacement hardware helps maintain alignment, safety, and optimal pump performance.

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