Graco 16M291 Sleeve Spacer
Compatible Machines
This Graco 16M291 Sleeve Spacer is used in specific Graco Mark-series displacement pump assemblies. Below are the confirmed compatible models:
- Graco Mark IV (Displacement Pump Models Using Sleeve Spacer 16M291)
- Graco Mark VII (Including Pump Model 16Y763)
- Graco Mark VII Max / ProContractor Series (17E-Series Pumps)
Product Details
The 16M291 Sleeve Spacer is a precision spacer located between the sleeve and adjoining pump components. It ensures correct pump alignment, protects internal surfaces, and supports smooth operation of the piston and sleeve assembly in high-pressure Mark-series pumps. It is an important wear-related part and should be replaced whenever the pump is serviced.
Key Features
- Ensures proper alignment of pump sleeve components
- Supports smooth piston operation under high pressure
- Prevents internal wear and maintains pump performance
- OEM replacement part for Mark-series displacement pumps
Frequently Asked Questions
It holds the sleeve in the correct position inside the displacement pump, ensuring smooth piston movement and reducing internal wear during operation.
Yes. The service manual states that an O-ring must be installed on the sleeve spacer during pump reassembly to maintain proper sealing.
No. This spacer is specific to Mark-series displacement pumps. Ultra Max II and GMAX models typically use different spacer components.
